| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE BALANCED FUND, INC. |
| Entity Central Index Key | 0000871839 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | T. ROWE PRICE BALANCED FUND, INC. |
| Entity Central Index Key | 0000871839 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| C000005423 | |
| Shareholder Report [Line Items] | |
| Fund Name | Balanced Fund |
| Class Name | Investor Class |
| Trading Symbol | RPBAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Balanced Fund (the "fund") for the period of January 1, 2024 to June 30, 2024. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B20"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus</span>" id="sjs-B21"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 700; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">www.troweprice.com/prospectus</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Balanced Fund - Investor Class $28 0.55% |
| Expenses Paid, Amount | $ 28 |
| Expense Ratio, Percent | 0.55% |
| Updated Performance Information Location [Text Block] | If you invest directly with T. Rowe Price, you can elect to receive future shareholder reports or other important documents through electronic delivery by enrolling at www.troweprice.com/paperless |
| AssetsNet | $ 4,625,553,000 |
| Holdings Count | Holding | 1,582 |
| InvestmentCompanyPortfolioTurnover | 21.40% |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $4,625,553 Number of Portfolio Holdings 1,582 |
| Additional Fund Statistics Significance or Limits [Text Block] | Portfolio Turnover Rate 21.4% |
| Holdings [Text Block] | Security Allocation Common Stocks 61.3 % Corporate Bonds 8.2 U.S. Government Agency Obligations (Excluding Mortgage-Backed) 7.9 U.S. Government & Agency Mortgage-Backed Securities 7.5 Bond Mutual Funds 5.3 Equity Mutual Funds 4.2 Non-U.S. Government Mortgage-Backed Securities 2.1 Asset-Backed Securities 1.0 Short-Term and Other 2.5 |
| Largest Holdings [Text Block] | Top Ten Holdings U.S. Treasury Notes 5.3 % T. Rowe Price Institutional High Yield Fund - Institutional Class 4.6 T. Rowe Price Real Assets Fund - I Class 4.2 Federal National Mortgage Assn. 4.0 Microsoft 3.1 NVIDIA 2.8 U.S. Treasury Bonds 2.6 Apple 2.2 Amazon.com 1.8 Alphabet 1.8 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless</span>" id="sjs-B34"><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: 13.8667px; margin: 0px; overflow: visible; text-align: justify;">www.troweprice.com/paperless</span> |
| C000166328 | |
| Shareholder Report [Line Items] | |
| Fund Name | Balanced Fund |
| Class Name | I Class |
| Trading Symbol | RBAIX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Balanced Fund (the "fund") for the period of January 1, 2024 to June 30, 2024. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information at www.troweprice.com/prospectus info troweprice.com |
| Material Fund Change Notice [Text Block] | |
| Additional Information Phone Number | 1‑800‑638‑5660 |
| Additional Information Email | info@troweprice.com</span>" id="sjs-B45"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">info@troweprice.com</span> |
| Additional Information Website | www.troweprice.com/prospectus</span>" id="sjs-B46"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 700; grid-area: auto; line-height: 17.3333px; margin: 0px; overflow: visible; text-align: justify;">www.troweprice.com/prospectus</span> |
| Expenses [Text Block] | What were the fund costs for the last six months? Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Balanced Fund - I Class $22 0.42% |
| Expenses Paid, Amount | $ 22 |
| Expense Ratio, Percent | 0.42% |
| Updated Performance Information Location [Text Block] | If you invest directly with T. Rowe Price, you can elect to receive future shareholder reports or other important documents through electronic delivery by enrolling at www.troweprice.com/paperless |
| AssetsNet | $ 4,625,553,000 |
| Holdings Count | Holding | 1,582 |
| InvestmentCompanyPortfolioTurnover | 21.40% |
| Additional Fund Statistics [Text Block] | What are some fund statistics? Fund Statistics Total Net Assets (000s) $4,625,553 Number of Portfolio Holdings 1,582 |
| Additional Fund Statistics Significance or Limits [Text Block] | Portfolio Turnover Rate 21.4% |
| Holdings [Text Block] | Security Allocation Common Stocks 61.3 % Corporate Bonds 8.2 U.S. Government Agency Obligations (Excluding Mortgage-Backed) 7.9 U.S. Government & Agency Mortgage-Backed Securities 7.5 Bond Mutual Funds 5.3 Equity Mutual Funds 4.2 Non-U.S. Government Mortgage-Backed Securities 2.1 Asset-Backed Securities 1.0 Short-Term and Other 2.5 |
| Largest Holdings [Text Block] | Top Ten Holdings U.S. Treasury Notes 5.3 % T. Rowe Price Institutional High Yield Fund - Institutional Class 4.6 T. Rowe Price Real Assets Fund - I Class 4.2 Federal National Mortgage Assn. 4.0 Microsoft 3.1 NVIDIA 2.8 U.S. Treasury Bonds 2.6 Apple 2.2 Amazon.com 1.8 Alphabet 1.8 |
| Material Fund Change [Text Block] | |
| Updated Prospectus Web Address | www.troweprice.com/paperless</span>" id="sjs-B59"><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: 13.8667px; margin: 0px; overflow: visible; text-align: justify;">www.troweprice.com/paperless</span> |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| C000005423 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000005423 | T. Rowe Price Institutional High Yield Fund - Institutional Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000005423 | T. Rowe Price Real Assets Fund - I Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000005423 | Federal National Mortgage Assn. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000005423 | Microsoft | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000005423 | NVIDIA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000005423 | U.S. Treasury Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000005423 | Apple | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000005423 | Amazon.com | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000005423 | Alphabet | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000005423 | Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.30% |
| C000005423 | Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000005423 | U.S. Government Agency Obligations (Excluding Mortgage-Backed) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000005423 | U.S. Government & Agency Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000005423 | Bond Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000005423 | Equity Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000005423 | Non-U.S. Government Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000005423 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000166328 | U.S. Treasury Notes | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000166328 | T. Rowe Price Institutional High Yield Fund - Institutional Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000166328 | T. Rowe Price Real Assets Fund - I Class | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000166328 | Federal National Mortgage Assn. | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000166328 | Microsoft | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000166328 | NVIDIA | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| C000166328 | U.S. Treasury Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000166328 | Apple | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000166328 | Amazon.com | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000166328 | Alphabet | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000166328 | Common Stocks | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.30% |
| C000166328 | Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000166328 | U.S. Government Agency Obligations (Excluding Mortgage-Backed) | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.90% |
| C000166328 | U.S. Government & Agency Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.50% |
| C000166328 | Bond Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000166328 | Equity Mutual Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000166328 | Non-U.S. Government Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000166328 | Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
