Loomis Sayles Growth Fund (LSGRX) N-CSRS5 Sep 24Certified semi-annual shareholder report (management investment company)Financial data

Company Profile

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
Form N-CSR Cover	Jun. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	LOOMIS SAYLES FUNDS II
Entity Central Index Key	0000872649
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024

Shareholder Report

Shareholder Report	6 Months Ended
Shareholder Report	Jun. 30, 2024 USD ($) Holding
Shareholder Report [Line Items]
Document Type	N-CSRS
Amendment Flag	false
Registrant Name	LOOMIS SAYLES FUNDS II
Entity Central Index Key	0000872649
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024
C000018231
Shareholder Report [Line Items]
Fund Name	Loomis Sayles High Income Fund
Class Name	Class A
Trading Symbol	NEFHX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles High Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $48 0.95%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.95%
AssetsNet	$ 42,707,727
Holdings Count \| Holding	404
Advisory Fees Paid, Amount	$ 0
InvestmentCompanyPortfolioTurnover	45%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $42,707,727 # of Portfolio Holdings (including overnight repurchase agreements) 404 Portfolio Turnover Rate 45% Total Advisory Fees Paid $0
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 33.0% Short-Term Investments 3.2% Consumer Cyclical Services 3.2% Aerospace & Defense 3.9% Healthcare 3.9% Pharmaceuticals 4.1% Finance Companies 4.6% Independent Energy 5.1% Leisure 5.2% Property & Casualty Insurance 5.3% Midstream 6.7% Technology 10.0% Cable Satellite 11.8% Footnote Description Footnote * Net of other assets less liabilities
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B31"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B32"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018233
Shareholder Report [Line Items]
Fund Name	Loomis Sayles High Income Fund
Class Name	Class C
Trading Symbol	NEHCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles High Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B42"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $85 1.70%
Expenses Paid, Amount	$ 85
Expense Ratio, Percent	1.70%
AssetsNet	$ 42,707,727
Holdings Count \| Holding	404
Advisory Fees Paid, Amount	$ 0
InvestmentCompanyPortfolioTurnover	45%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $42,707,727 # of Portfolio Holdings (including overnight repurchase agreements) 404 Portfolio Turnover Rate 45% Total Advisory Fees Paid $0
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 33.0% Short-Term Investments 3.2% Consumer Cyclical Services 3.2% Aerospace & Defense 3.9% Healthcare 3.9% Pharmaceuticals 4.1% Finance Companies 4.6% Independent Energy 5.1% Leisure 5.2% Property & Casualty Insurance 5.3% Midstream 6.7% Technology 10.0% Cable Satellite 11.8% Footnote Description Footnote * Net of other assets less liabilities
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B54"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B55"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000175112
Shareholder Report [Line Items]
Fund Name	Loomis Sayles High Income Fund
Class Name	Class N
Trading Symbol	LSHNX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles High Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B65"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class N $33 0.65%
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.65%
AssetsNet	$ 42,707,727
Holdings Count \| Holding	404
Advisory Fees Paid, Amount	$ 0
InvestmentCompanyPortfolioTurnover	45%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $42,707,727 # of Portfolio Holdings (including overnight repurchase agreements) 404 Portfolio Turnover Rate 45% Total Advisory Fees Paid $0
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 33.0% Short-Term Investments 3.2% Consumer Cyclical Services 3.2% Aerospace & Defense 3.9% Healthcare 3.9% Pharmaceuticals 4.1% Finance Companies 4.6% Independent Energy 5.1% Leisure 5.2% Property & Casualty Insurance 5.3% Midstream 6.7% Technology 10.0% Cable Satellite 11.8% Footnote Description Footnote * Net of other assets less liabilities
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B77"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B78"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000069253
Shareholder Report [Line Items]
Fund Name	Loomis Sayles High Income Fund
Class Name	Class Y
Trading Symbol	NEHYX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles High Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B88"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $35 0.70%
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.70%
AssetsNet	$ 42,707,727
Holdings Count \| Holding	404
Advisory Fees Paid, Amount	$ 0
InvestmentCompanyPortfolioTurnover	45%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $42,707,727 # of Portfolio Holdings (including overnight repurchase agreements) 404 Portfolio Turnover Rate 45% Total Advisory Fees Paid $0
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 33.0% Short-Term Investments 3.2% Consumer Cyclical Services 3.2% Aerospace & Defense 3.9% Healthcare 3.9% Pharmaceuticals 4.1% Finance Companies 4.6% Independent Energy 5.1% Leisure 5.2% Property & Casualty Insurance 5.3% Midstream 6.7% Technology 10.0% Cable Satellite 11.8% Footnote Description Footnote * Net of other assets less liabilities
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B100"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B101"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000223747
Shareholder Report [Line Items]
Fund Name	Loomis Sayles International Growth Fund
Class Name	Class A
Trading Symbol	LIGGX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles International Growth Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B111"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $61 1.20%
Expenses Paid, Amount	$ 61
Expense Ratio, Percent	1.20%
AssetsNet	$ 37,748,220
Holdings Count \| Holding	36
Advisory Fees Paid, Amount	$ 45,036
InvestmentCompanyPortfolioTurnover	0%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $37,748,220 # of Portfolio Holdings (including overnight repurchase agreements) 36 Portfolio Turnover Rate 0% Total Advisory Fees Paid $45,036
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 16.6% IT Services 3.0% Professional Services 3.2% Automobiles 5.1% Interactive Media & Services 5.8% Financial Services 6.7% Beverages 7.8% Hotels, Restaurants & Leisure 8.5% Semiconductors & Semiconductor Equipment 9.5% Broadline Retail 9.5% Software 9.5% Pharmaceuticals 14.8% Footnote Description Footnote * Net of other assets less liabilities
Largest Holdings [Text Block]	Top Ten Holdings Novo Nordisk AS, Class B 9.0% MercadoLibre, Inc. 6.6% ARM Holdings PLC, ADR 5.8% WiseTech Global Ltd. 5.4% Tesla, Inc. 5.1% Adyen NV 4.9% Tencent Holdings Ltd. 4.4% Trip.com Group Ltd., ADR 4.3% SAP SE 4.2% NXP Semiconductors NV 3.7%
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B124"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B125"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000223748
Shareholder Report [Line Items]
Fund Name	Loomis Sayles International Growth Fund
Class Name	Class C
Trading Symbol	LIGCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles International Growth Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B135"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $99 1.95%
Expenses Paid, Amount	$ 99
Expense Ratio, Percent	1.95%
AssetsNet	$ 37,748,220
Holdings Count \| Holding	36
Advisory Fees Paid, Amount	$ 45,036
InvestmentCompanyPortfolioTurnover	0%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $37,748,220 # of Portfolio Holdings (including overnight repurchase agreements) 36 Portfolio Turnover Rate 0% Total Advisory Fees Paid $45,036
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 16.6% IT Services 3.0% Professional Services 3.2% Automobiles 5.1% Interactive Media & Services 5.8% Financial Services 6.7% Beverages 7.8% Hotels, Restaurants & Leisure 8.5% Semiconductors & Semiconductor Equipment 9.5% Broadline Retail 9.5% Software 9.5% Pharmaceuticals 14.8% Footnote Description Footnote * Net of other assets less liabilities
Largest Holdings [Text Block]	Top Ten Holdings Novo Nordisk AS, Class B 9.0% MercadoLibre, Inc. 6.6% ARM Holdings PLC, ADR 5.8% WiseTech Global Ltd. 5.4% Tesla, Inc. 5.1% Adyen NV 4.9% Tencent Holdings Ltd. 4.4% Trip.com Group Ltd., ADR 4.3% SAP SE 4.2% NXP Semiconductors NV 3.7%
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B148"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B149"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000223749
Shareholder Report [Line Items]
Fund Name	Loomis Sayles International Growth Fund
Class Name	Class N
Trading Symbol	LIGNX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles International Growth Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B159"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class N $46 0.90%
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.90%
AssetsNet	$ 37,748,220
Holdings Count \| Holding	36
Advisory Fees Paid, Amount	$ 45,036
InvestmentCompanyPortfolioTurnover	0%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $37,748,220 # of Portfolio Holdings (including overnight repurchase agreements) 36 Portfolio Turnover Rate 0% Total Advisory Fees Paid $45,036
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 16.6% IT Services 3.0% Professional Services 3.2% Automobiles 5.1% Interactive Media & Services 5.8% Financial Services 6.7% Beverages 7.8% Hotels, Restaurants & Leisure 8.5% Semiconductors & Semiconductor Equipment 9.5% Broadline Retail 9.5% Software 9.5% Pharmaceuticals 14.8% Footnote Description Footnote * Net of other assets less liabilities
Largest Holdings [Text Block]	Top Ten Holdings Novo Nordisk AS, Class B 9.0% MercadoLibre, Inc. 6.6% ARM Holdings PLC, ADR 5.8% WiseTech Global Ltd. 5.4% Tesla, Inc. 5.1% Adyen NV 4.9% Tencent Holdings Ltd. 4.4% Trip.com Group Ltd., ADR 4.3% SAP SE 4.2% NXP Semiconductors NV 3.7%
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B172"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B173"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000223746
Shareholder Report [Line Items]
Fund Name	Loomis Sayles International Growth Fund
Class Name	Class Y
Trading Symbol	LIGYX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles International Growth Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B183"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $48 0.95%
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.95%
AssetsNet	$ 37,748,220
Holdings Count \| Holding	36
Advisory Fees Paid, Amount	$ 45,036
InvestmentCompanyPortfolioTurnover	0%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $37,748,220 # of Portfolio Holdings (including overnight repurchase agreements) 36 Portfolio Turnover Rate 0% Total Advisory Fees Paid $45,036
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 16.6% IT Services 3.0% Professional Services 3.2% Automobiles 5.1% Interactive Media & Services 5.8% Financial Services 6.7% Beverages 7.8% Hotels, Restaurants & Leisure 8.5% Semiconductors & Semiconductor Equipment 9.5% Broadline Retail 9.5% Software 9.5% Pharmaceuticals 14.8% Footnote Description Footnote * Net of other assets less liabilities
Largest Holdings [Text Block]	Top Ten Holdings Novo Nordisk AS, Class B 9.0% MercadoLibre, Inc. 6.6% ARM Holdings PLC, ADR 5.8% WiseTech Global Ltd. 5.4% Tesla, Inc. 5.1% Adyen NV 4.9% Tencent Holdings Ltd. 4.4% Trip.com Group Ltd., ADR 4.3% SAP SE 4.2% NXP Semiconductors NV 3.7%
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B196"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B197"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000082998
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Investment Grade Bond Fund
Class Name	Admin Class
Trading Symbol	LIGAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Investment Grade Bond Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B207"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Admin Class $49 0.99%
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.99%
AssetsNet	$ 12,641,048,949
Holdings Count \| Holding	1,007
Advisory Fees Paid, Amount	$ 19,368,543
InvestmentCompanyPortfolioTurnover	18%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $12,641,048,949 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 1,007 Portfolio Turnover Rate 18% Total Advisory Fees Paid $19,368,543
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 36.9% Short-Term Investments 3.4% Independent Energy 3.0% Aerospace & Defense 3.0% Finance Companies 3.3% Midstream 3.7% ABS Home Equity 4.1% ABS Car Loan 4.4% ABS Other 4.6% Technology 8.2% Banking 9.4% Treasuries 16.0% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts)
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B219"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B220"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018234
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Investment Grade Bond Fund
Class Name	Class A
Trading Symbol	LIGRX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Investment Grade Bond Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B230"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $37 0.74%
Expenses Paid, Amount	$ 37
Expense Ratio, Percent	0.74%
AssetsNet	$ 12,641,048,949
Holdings Count \| Holding	1,007
Advisory Fees Paid, Amount	$ 19,368,543
InvestmentCompanyPortfolioTurnover	18%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $12,641,048,949 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 1,007 Portfolio Turnover Rate 18% Total Advisory Fees Paid $19,368,543
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 36.9% Short-Term Investments 3.4% Independent Energy 3.0% Aerospace & Defense 3.0% Finance Companies 3.3% Midstream 3.7% ABS Home Equity 4.1% ABS Car Loan 4.4% ABS Other 4.6% Technology 8.2% Banking 9.4% Treasuries 16.0% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts)
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B242"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B243"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018236
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Investment Grade Bond Fund
Class Name	Class C
Trading Symbol	LGBCX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Investment Grade Bond Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B253"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $74 1.49%
Expenses Paid, Amount	$ 74
Expense Ratio, Percent	1.49%
AssetsNet	$ 12,641,048,949
Holdings Count \| Holding	1,007
Advisory Fees Paid, Amount	$ 19,368,543
InvestmentCompanyPortfolioTurnover	18%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $12,641,048,949 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 1,007 Portfolio Turnover Rate 18% Total Advisory Fees Paid $19,368,543
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 36.9% Short-Term Investments 3.4% Independent Energy 3.0% Aerospace & Defense 3.0% Finance Companies 3.3% Midstream 3.7% ABS Home Equity 4.1% ABS Car Loan 4.4% ABS Other 4.6% Technology 8.2% Banking 9.4% Treasuries 16.0% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts)
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B265"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B266"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000125485
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Investment Grade Bond Fund
Class Name	Class N
Trading Symbol	LGBNX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Investment Grade Bond Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B276"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class N $22 0.44%
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.44%
AssetsNet	$ 12,641,048,949
Holdings Count \| Holding	1,007
Advisory Fees Paid, Amount	$ 19,368,543
InvestmentCompanyPortfolioTurnover	18%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $12,641,048,949 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 1,007 Portfolio Turnover Rate 18% Total Advisory Fees Paid $19,368,543
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 36.9% Short-Term Investments 3.4% Independent Energy 3.0% Aerospace & Defense 3.0% Finance Companies 3.3% Midstream 3.7% ABS Home Equity 4.1% ABS Car Loan 4.4% ABS Other 4.6% Technology 8.2% Banking 9.4% Treasuries 16.0% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts)
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B288"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B289"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018238
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Investment Grade Bond Fund
Class Name	Class Y
Trading Symbol	LSIIX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Investment Grade Bond Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B299"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $24 0.49%
Expenses Paid, Amount	$ 24
Expense Ratio, Percent	0.49%
AssetsNet	$ 12,641,048,949
Holdings Count \| Holding	1,007
Advisory Fees Paid, Amount	$ 19,368,543
InvestmentCompanyPortfolioTurnover	18%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $12,641,048,949 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 1,007 Portfolio Turnover Rate 18% Total Advisory Fees Paid $19,368,543
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 36.9% Short-Term Investments 3.4% Independent Energy 3.0% Aerospace & Defense 3.0% Finance Companies 3.3% Midstream 3.7% ABS Home Equity 4.1% ABS Car Loan 4.4% ABS Other 4.6% Technology 8.2% Banking 9.4% Treasuries 16.0% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts)
Material Fund Change [Text Block]	Material Fund Changes There were no material fund changes during the period.
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B311"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B312"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000082999
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Strategic Income Fund
Class Name	Admin Class
Trading Symbol	NEZAX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Strategic Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B322"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Admin Class $59 1.18%
Expenses Paid, Amount	$ 59
Expense Ratio, Percent	1.18%
Material Change Description [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
AssetsNet	$ 2,708,820,354
Holdings Count \| Holding	525
Advisory Fees Paid, Amount	$ 6,971,788
InvestmentCompanyPortfolioTurnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $2,708,820,354 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 525 Portfolio Turnover Rate 39% Total Advisory Fees Paid $6,971,788
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 39.3% Short-Term Investments 6.7% ABS Other 3.1% Metals & Mining 3.2% Technology 3.7% Banking 3.8% Collateralized Loan Obligations 4.0% Pharmaceuticals 4.1% Finance Companies 4.6% Sovereigns 4.6% Cable Satellite 8.7% Treasuries 14.2% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts, forward foreign currency contracts and swap agreements)
Material Fund Change [Text Block]	Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Expenses:
Material Fund Change Expenses [Text Block]	Expenses:
Summary of Change Legend [Text Block]	Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B337"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B338"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018251
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Strategic Income Fund
Class Name	Class A
Trading Symbol	NEFZX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Strategic Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B348"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $47 0.93%
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.93%
Material Change Description [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
AssetsNet	$ 2,708,820,354
Holdings Count \| Holding	525
Advisory Fees Paid, Amount	$ 6,971,788
InvestmentCompanyPortfolioTurnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $2,708,820,354 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 525 Portfolio Turnover Rate 39% Total Advisory Fees Paid $6,971,788
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 39.3% Short-Term Investments 6.7% ABS Other 3.1% Metals & Mining 3.2% Technology 3.7% Banking 3.8% Collateralized Loan Obligations 4.0% Pharmaceuticals 4.1% Finance Companies 4.6% Sovereigns 4.6% Cable Satellite 8.7% Treasuries 14.2% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts, forward foreign currency contracts and swap agreements)
Material Fund Change [Text Block]	Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Expenses:
Material Fund Change Expenses [Text Block]	Expenses:
Summary of Change Legend [Text Block]	Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B363"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B364"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018253
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Strategic Income Fund
Class Name	Class C
Trading Symbol	NECZX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Strategic Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B374"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $84 1.68%
Expenses Paid, Amount	$ 84
Expense Ratio, Percent	1.68%
Material Change Description [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
AssetsNet	$ 2,708,820,354
Holdings Count \| Holding	525
Advisory Fees Paid, Amount	$ 6,971,788
InvestmentCompanyPortfolioTurnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $2,708,820,354 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 525 Portfolio Turnover Rate 39% Total Advisory Fees Paid $6,971,788
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 39.3% Short-Term Investments 6.7% ABS Other 3.1% Metals & Mining 3.2% Technology 3.7% Banking 3.8% Collateralized Loan Obligations 4.0% Pharmaceuticals 4.1% Finance Companies 4.6% Sovereigns 4.6% Cable Satellite 8.7% Treasuries 14.2% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts, forward foreign currency contracts and swap agreements)
Material Fund Change [Text Block]	Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Expenses:
Material Fund Change Expenses [Text Block]	Expenses:
Summary of Change Legend [Text Block]	Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B389"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B390"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000125487
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Strategic Income Fund
Class Name	Class N
Trading Symbol	NEZNX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Strategic Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B400"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class N $32 0.63%
Expenses Paid, Amount	$ 32
Expense Ratio, Percent	0.63%
Material Change Description [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
AssetsNet	$ 2,708,820,354
Holdings Count \| Holding	525
Advisory Fees Paid, Amount	$ 6,971,788
InvestmentCompanyPortfolioTurnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $2,708,820,354 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 525 Portfolio Turnover Rate 39% Total Advisory Fees Paid $6,971,788
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 39.3% Short-Term Investments 6.7% ABS Other 3.1% Metals & Mining 3.2% Technology 3.7% Banking 3.8% Collateralized Loan Obligations 4.0% Pharmaceuticals 4.1% Finance Companies 4.6% Sovereigns 4.6% Cable Satellite 8.7% Treasuries 14.2% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts, forward foreign currency contracts and swap agreements)
Material Fund Change [Text Block]	Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Expenses:
Material Fund Change Expenses [Text Block]	Expenses:
Summary of Change Legend [Text Block]	Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B415"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B416"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
C000018254
Shareholder Report [Line Items]
Fund Name	Loomis Sayles Strategic Income Fund
Class Name	Class Y
Trading Symbol	NEZYX
Annual or Semi-Annual Statement [Text Block]	This semi-annual shareholder report contains important information about Loomis Sayles Strategic Income Fund for the period of January 1, 2024 to June 30, 2024.
Shareholder Report Annual or Semi-Annual	Semi-annual Shareholder Report
Additional Information [Text Block]	You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments
Additional Information Phone Number	800-225-5478
Additional Information Website	im.natixis.com/funddocuments</span>" id="sjs-B426"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 400; grid-area: auto; line-height: 18px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>
Expenses [Text Block]	What were the fund costs for the last six months? Class Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $34 0.68%
Expenses Paid, Amount	$ 34
Expense Ratio, Percent	0.68%
Material Change Description [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
AssetsNet	$ 2,708,820,354
Holdings Count \| Holding	525
Advisory Fees Paid, Amount	$ 6,971,788
InvestmentCompanyPortfolioTurnover	39%
Additional Fund Statistics [Text Block]	Key Fund Statistics Total Net Assets $2,708,820,354 # of Portfolio Holdings (including overnight repurchase agreements and derivatives) 525 Portfolio Turnover Rate 39% Total Advisory Fees Paid $6,971,788
Holdings [Text Block]	Industry Summary Value Value Other investments less than 3% of net assets Footnote Reference 39.3% Short-Term Investments 6.7% ABS Other 3.1% Metals & Mining 3.2% Technology 3.7% Banking 3.8% Collateralized Loan Obligations 4.0% Pharmaceuticals 4.1% Finance Companies 4.6% Sovereigns 4.6% Cable Satellite 8.7% Treasuries 14.2% Footnote Description Footnote * Net of other assets less liabilities (including futures contracts, forward foreign currency contracts and swap agreements)
Material Fund Change [Text Block]	Material Fund Changes Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments Expenses:
Material Fund Change Expenses [Text Block]	Expenses:
Summary of Change Legend [Text Block]	Effective July 1, 2024, the Fund had the following material changes, which were reported in a supplement to the Fund's prospectus. For more information, you may review the Fund's prospectus at im.natixis.com/funddocuments
Updated Prospectus Phone Number	800-225-5478
Updated Prospectus Email Address	secretaryofthefunds@natixis.com</span>" id="sjs-B441"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">secretaryofthefunds@natixis.com</span>
Updated Prospectus Web Address	im.natixis.com/funddocuments</span>" id="sjs-B442"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">im.natixis.com/funddocuments</span>

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
C000018231 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000018231 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000018231 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000018231 \| D
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000018231 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000018231 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000018231 \| B
Holdings [Line Items]
Percent of Net Asset Value	30.40%
C000018231 \| BB
Holdings [Line Items]
Percent of Net Asset Value	45.20%
C000018231 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000018231 \| A
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000018231 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	33%
C000018231 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018231 \| SectorConsumer Cyclical Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018231 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000018231 \| SectorHealthcare
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000018231 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018231 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018231 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000018231 \| SectorLeisure
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000018231 \| SectorProperty & Casualty Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000018231 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000018231 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	10%
C000018231 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000018233 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000018233 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000018233 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000018233 \| D
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000018233 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000018233 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000018233 \| B
Holdings [Line Items]
Percent of Net Asset Value	30.40%
C000018233 \| BB
Holdings [Line Items]
Percent of Net Asset Value	45.20%
C000018233 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000018233 \| A
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000018233 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	33%
C000018233 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018233 \| SectorConsumer Cyclical Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018233 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000018233 \| SectorHealthcare
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000018233 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018233 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018233 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000018233 \| SectorLeisure
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000018233 \| SectorProperty & Casualty Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000018233 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000018233 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	10%
C000018233 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000175112 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000175112 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000175112 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000175112 \| D
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000175112 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000175112 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000175112 \| B
Holdings [Line Items]
Percent of Net Asset Value	30.40%
C000175112 \| BB
Holdings [Line Items]
Percent of Net Asset Value	45.20%
C000175112 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000175112 \| A
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000175112 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	33%
C000175112 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000175112 \| SectorConsumer Cyclical Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000175112 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000175112 \| SectorHealthcare
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000175112 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000175112 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000175112 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000175112 \| SectorLeisure
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000175112 \| SectorProperty & Casualty Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000175112 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000175112 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	10%
C000175112 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000069253 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000069253 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000069253 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	9.60%
C000069253 \| D
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000069253 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000069253 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	6.50%
C000069253 \| B
Holdings [Line Items]
Percent of Net Asset Value	30.40%
C000069253 \| BB
Holdings [Line Items]
Percent of Net Asset Value	45.20%
C000069253 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000069253 \| A
Holdings [Line Items]
Percent of Net Asset Value	0.30%
C000069253 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	33%
C000069253 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000069253 \| SectorConsumer Cyclical Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000069253 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000069253 \| SectorHealthcare
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000069253 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000069253 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000069253 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000069253 \| SectorLeisure
Holdings [Line Items]
Percent of Net Asset Value	5.20%
C000069253 \| SectorProperty & Casualty Insurance
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000069253 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000069253 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	10%
C000069253 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	11.80%
C000223747 \| Novo Nordisk ASFR_BP6KMJ909
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223747 \| MercadoLibre, Inc.FR_58733R102
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000223747 \| ARM Holdings PLC, ADRFR_042068205
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223747 \| WiseTech Global Ltd.FR_BZ8GX8906
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000223747 \| Tesla, Inc.FR_88160R101
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223747 \| Adyen NVFR_BZ1HM4902
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000223747 \| Tencent Holdings Ltd.FR_BMMV2K903
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000223747 \| Trip.com Group Ltd., ADRFR_89677Q107
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000223747 \| SAP SEFR_484628904
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223747 \| NXP Semiconductors NVFR_N6596X109
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000223747 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000223747 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	14.80%
C000223747 \| SectorIT Services
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223747 \| SectorProfessional Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223747 \| SectorAutomobiles
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223747 \| SectorInteractive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223747 \| SectorFinancial Services
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000223747 \| SectorBeverages
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000223747 \| SectorHotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000223747 \| SectorSemiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223747 \| SectorBroadline Retail
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223747 \| SectorSoftware
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223747 \| Macau
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000223747 \| Canada
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223747 \| Japan
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223747 \| France
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223747 \| Germany
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223747 \| Switzerland
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000223747 \| United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000223747 \| Australia
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000223747 \| Netherlands
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000223747 \| Denmark
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223747 \| Brazil
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000223747 \| China
Holdings [Line Items]
Percent of Net Asset Value	20.80%
C000223747 \| United States
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000223748 \| Novo Nordisk ASFR_BP6KMJ909
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223748 \| MercadoLibre, Inc.FR_58733R102
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000223748 \| ARM Holdings PLC, ADRFR_042068205
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223748 \| WiseTech Global Ltd.FR_BZ8GX8906
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000223748 \| Tesla, Inc.FR_88160R101
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223748 \| Adyen NVFR_BZ1HM4902
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000223748 \| Tencent Holdings Ltd.FR_BMMV2K903
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000223748 \| Trip.com Group Ltd., ADRFR_89677Q107
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000223748 \| SAP SEFR_484628904
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223748 \| NXP Semiconductors NVFR_N6596X109
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000223748 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000223748 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	14.80%
C000223748 \| SectorIT Services
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223748 \| SectorProfessional Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223748 \| SectorAutomobiles
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223748 \| SectorInteractive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223748 \| SectorFinancial Services
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000223748 \| SectorBeverages
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000223748 \| SectorHotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000223748 \| SectorSemiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223748 \| SectorBroadline Retail
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223748 \| SectorSoftware
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223748 \| Macau
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000223748 \| Canada
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223748 \| Japan
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223748 \| France
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223748 \| Germany
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223748 \| Switzerland
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000223748 \| United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000223748 \| Australia
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000223748 \| Netherlands
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000223748 \| Denmark
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223748 \| Brazil
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000223748 \| China
Holdings [Line Items]
Percent of Net Asset Value	20.80%
C000223748 \| United States
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000223749 \| Novo Nordisk ASFR_BP6KMJ909
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223749 \| MercadoLibre, Inc.FR_58733R102
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000223749 \| ARM Holdings PLC, ADRFR_042068205
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223749 \| WiseTech Global Ltd.FR_BZ8GX8906
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000223749 \| Tesla, Inc.FR_88160R101
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223749 \| Adyen NVFR_BZ1HM4902
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000223749 \| Tencent Holdings Ltd.FR_BMMV2K903
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000223749 \| Trip.com Group Ltd., ADRFR_89677Q107
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000223749 \| SAP SEFR_484628904
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223749 \| NXP Semiconductors NVFR_N6596X109
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000223749 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000223749 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	14.80%
C000223749 \| SectorIT Services
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223749 \| SectorProfessional Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223749 \| SectorAutomobiles
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223749 \| SectorInteractive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223749 \| SectorFinancial Services
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000223749 \| SectorBeverages
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000223749 \| SectorHotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000223749 \| SectorSemiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223749 \| SectorBroadline Retail
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223749 \| SectorSoftware
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223749 \| Macau
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000223749 \| Canada
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223749 \| Japan
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223749 \| France
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223749 \| Germany
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223749 \| Switzerland
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000223749 \| United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000223749 \| Australia
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000223749 \| Netherlands
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000223749 \| Denmark
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223749 \| Brazil
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000223749 \| China
Holdings [Line Items]
Percent of Net Asset Value	20.80%
C000223749 \| United States
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000223746 \| Novo Nordisk ASFR_BP6KMJ909
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223746 \| MercadoLibre, Inc.FR_58733R102
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000223746 \| ARM Holdings PLC, ADRFR_042068205
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223746 \| WiseTech Global Ltd.FR_BZ8GX8906
Holdings [Line Items]
Percent of Net Asset Value	5.40%
C000223746 \| Tesla, Inc.FR_88160R101
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223746 \| Adyen NVFR_BZ1HM4902
Holdings [Line Items]
Percent of Net Asset Value	4.90%
C000223746 \| Tencent Holdings Ltd.FR_BMMV2K903
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000223746 \| Trip.com Group Ltd., ADRFR_89677Q107
Holdings [Line Items]
Percent of Net Asset Value	4.30%
C000223746 \| SAP SEFR_484628904
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223746 \| NXP Semiconductors NVFR_N6596X109
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000223746 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000223746 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	14.80%
C000223746 \| SectorIT Services
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223746 \| SectorProfessional Services
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223746 \| SectorAutomobiles
Holdings [Line Items]
Percent of Net Asset Value	5.10%
C000223746 \| SectorInteractive Media & Services
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000223746 \| SectorFinancial Services
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000223746 \| SectorBeverages
Holdings [Line Items]
Percent of Net Asset Value	7.80%
C000223746 \| SectorHotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Net Asset Value	8.50%
C000223746 \| SectorSemiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223746 \| SectorBroadline Retail
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223746 \| SectorSoftware
Holdings [Line Items]
Percent of Net Asset Value	9.50%
C000223746 \| Macau
Holdings [Line Items]
Percent of Net Asset Value	2.70%
C000223746 \| Canada
Holdings [Line Items]
Percent of Net Asset Value	3%
C000223746 \| Japan
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000223746 \| France
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223746 \| Germany
Holdings [Line Items]
Percent of Net Asset Value	4.20%
C000223746 \| Switzerland
Holdings [Line Items]
Percent of Net Asset Value	4.50%
C000223746 \| United Kingdom
Holdings [Line Items]
Percent of Net Asset Value	4.70%
C000223746 \| Australia
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000223746 \| Netherlands
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000223746 \| Denmark
Holdings [Line Items]
Percent of Net Asset Value	9%
C000223746 \| Brazil
Holdings [Line Items]
Percent of Net Asset Value	9.10%
C000223746 \| China
Holdings [Line Items]
Percent of Net Asset Value	20.80%
C000223746 \| United States
Holdings [Line Items]
Percent of Net Asset Value	23.70%
C000082998 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	1%
C000082998 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000082998 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	13.20%
C000082998 \| CC
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000082998 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000082998 \| B
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000082998 \| BB
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000082998 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	48%
C000082998 \| A
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000082998 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000082998 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000082998 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000082998 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000082998 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3%
C000082998 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000082998 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	3%
C000082998 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000082998 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000082998 \| SectorABS Home Equity
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000082998 \| SectorABS Car Loan
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000082998 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000082998 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000082998 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	16%
C000018234 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	1%
C000018234 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000018234 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	13.20%
C000018234 \| CC
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000018234 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018234 \| B
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000018234 \| BB
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000018234 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	48%
C000018234 \| A
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018234 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018234 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000018234 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000018234 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000018234 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018234 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000018234 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018234 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018234 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000018234 \| SectorABS Home Equity
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018234 \| SectorABS Car Loan
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000018234 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018234 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000018234 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	16%
C000018236 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	1%
C000018236 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000018236 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	13.20%
C000018236 \| CC
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000018236 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018236 \| B
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000018236 \| BB
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000018236 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	48%
C000018236 \| A
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018236 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018236 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000018236 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000018236 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000018236 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018236 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000018236 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018236 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018236 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000018236 \| SectorABS Home Equity
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018236 \| SectorABS Car Loan
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000018236 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018236 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000018236 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	16%
C000125485 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	1%
C000125485 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000125485 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	13.20%
C000125485 \| CC
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000125485 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000125485 \| B
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000125485 \| BB
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000125485 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	48%
C000125485 \| A
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000125485 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000125485 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000125485 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000125485 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000125485 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3%
C000125485 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000125485 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	3%
C000125485 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000125485 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000125485 \| SectorABS Home Equity
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000125485 \| SectorABS Car Loan
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000125485 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000125485 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000125485 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	16%
C000018238 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	1%
C000018238 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	16.20%
C000018238 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	13.20%
C000018238 \| CC
Holdings [Line Items]
Percent of Net Asset Value	0.20%
C000018238 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018238 \| B
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000018238 \| BB
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000018238 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	48%
C000018238 \| A
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018238 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018238 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000018238 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	36.90%
C000018238 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	3.40%
C000018238 \| SectorAerospace & Defense
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018238 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000018238 \| SectorIndependent Energy
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018238 \| SectorMidstream
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018238 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000018238 \| SectorABS Home Equity
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018238 \| SectorABS Car Loan
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000018238 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018238 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000018238 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	16%
C000082999 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000082999 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000082999 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000082999 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000082999 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000082999 \| B
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000082999 \| BB
Holdings [Line Items]
Percent of Net Asset Value	21.20%
C000082999 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	25%
C000082999 \| A
Holdings [Line Items]
Percent of Net Asset Value	3%
C000082999 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000082999 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000082999 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	39.30%
C000082999 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000082999 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000082999 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000082999 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000082999 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000082999 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000082999 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000082999 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	14.20%
C000082999 \| SectorMetals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000082999 \| SectorCollateralized Loan Obligations
Holdings [Line Items]
Percent of Net Asset Value	4%
C000082999 \| SectorSovereigns
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018251 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000018251 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000018251 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000018251 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000018251 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018251 \| B
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018251 \| BB
Holdings [Line Items]
Percent of Net Asset Value	21.20%
C000018251 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	25%
C000018251 \| A
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018251 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018251 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018251 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	39.30%
C000018251 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000018251 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018251 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018251 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018251 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018251 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018251 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000018251 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	14.20%
C000018251 \| SectorMetals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018251 \| SectorCollateralized Loan Obligations
Holdings [Line Items]
Percent of Net Asset Value	4%
C000018251 \| SectorSovereigns
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018253 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000018253 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000018253 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000018253 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000018253 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018253 \| B
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018253 \| BB
Holdings [Line Items]
Percent of Net Asset Value	21.20%
C000018253 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	25%
C000018253 \| A
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018253 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018253 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018253 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	39.30%
C000018253 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000018253 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018253 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018253 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018253 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018253 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018253 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000018253 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	14.20%
C000018253 \| SectorMetals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018253 \| SectorCollateralized Loan Obligations
Holdings [Line Items]
Percent of Net Asset Value	4%
C000018253 \| SectorSovereigns
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000125487 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000125487 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000125487 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000125487 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000125487 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000125487 \| B
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000125487 \| BB
Holdings [Line Items]
Percent of Net Asset Value	21.20%
C000125487 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	25%
C000125487 \| A
Holdings [Line Items]
Percent of Net Asset Value	3%
C000125487 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000125487 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000125487 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	39.30%
C000125487 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000125487 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000125487 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000125487 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000125487 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000125487 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000125487 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000125487 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	14.20%
C000125487 \| SectorMetals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000125487 \| SectorCollateralized Loan Obligations
Holdings [Line Items]
Percent of Net Asset Value	4%
C000125487 \| SectorSovereigns
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018254 \| Cash & equivalents
Holdings [Line Items]
Percent of Net Asset Value	2.60%
C000018254 \| US Treasury
Holdings [Line Items]
Percent of Net Asset Value	10.40%
C000018254 \| Not rated
Holdings [Line Items]
Percent of Net Asset Value	20.60%
C000018254 \| CC
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000018254 \| CCC
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018254 \| B
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018254 \| BB
Holdings [Line Items]
Percent of Net Asset Value	21.20%
C000018254 \| BBB
Holdings [Line Items]
Percent of Net Asset Value	25%
C000018254 \| A
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018254 \| AA
Holdings [Line Items]
Percent of Net Asset Value	2%
C000018254 \| AAA
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000018254 \| Sector Other Net Line
Holdings [Line Items]
Percent of Net Asset Value	39.30%
C000018254 \| SectorShort-Term Investments
Holdings [Line Items]
Percent of Net Asset Value	6.70%
C000018254 \| SectorPharmaceuticals
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000018254 \| SectorFinance Companies
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000018254 \| SectorTechnology
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000018254 \| SectorCable Satellite
Holdings [Line Items]
Percent of Net Asset Value	8.70%
C000018254 \| SectorABS Other
Holdings [Line Items]
Percent of Net Asset Value	3.10%
C000018254 \| SectorBanking
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000018254 \| SectorTreasuries
Holdings [Line Items]
Percent of Net Asset Value	14.20%
C000018254 \| SectorMetals & Mining
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018254 \| SectorCollateralized Loan Obligations
Holdings [Line Items]
Percent of Net Asset Value	4%
C000018254 \| SectorSovereigns
Holdings [Line Items]
Percent of Net Asset Value	4.60%