| Pay vs Performance Disclosure - USD ($) | 12 Months Ended |
| Nov. 30, 2023 | Nov. 30, 2022 | Nov. 30, 2021 |
| Pay vs Performance Disclosure | | | |
| Pay vs Performance Disclosure, Table | Year SCT Total for PEO PEO CAP ($) (1) (c) Average SCT Total for Other NEOs Average CAP for Other NEOs ($) (2) (e) Value of Initial Fixed $100 Investment Based on: Net Income Non-GAAP Operating Income ($ millions) (4) (i) Total Shareholder Return Peer Group Total Shareholder Return ($) (3) (g) 2023 10,235,151 2,761,305 2,172,388 1,246,283 89.51 35.76 313.8 1,010.0 2022 8,613,762 2,215,482 1,700,867 977,421 116.55 72.41 435.0 884.1 2021 15,087,737 32,933,201 2,536,544 3,868,727 158.10 121.30 405.6 733.7 | | |
| Peer Group Issuers, Footnote | The peer group total shareholder return in this column reflects the peer group comprised of our core CX solutions competitors that are publicly traded companies, as set forth in Part II, Item 5 of our Annual Report on Form 10-K for the fiscal year ended November 30, 2023. | | |
| PEO Total Compensation Amount | $ 10,235,151 | $ 8,613,762 | $ 15,087,737 |
| PEO Actually Paid Compensation Amount | $ 2,761,305 | 2,215,482 | 32,933,201 |
| Adjustment To PEO Compensation, Footnote | The PEO CAP for each year was determined in accordance with Item 402(v) of Regulation S-K by making the following adjustments to the SCT Totals: Amounts Deducted from Amounts Added to Net Adjustment Grant Date Fair Value of Stock Awards Grant Date Fair Value of Option Awards Vesting Date Fair Value of Equity Awards Granted and Vested during Fiscal Year Year-End Fair Value of Equity Awards Granted during Fiscal Year that were Outstanding and Unvested at Year End Year-over-Year Change in Year-End Fair Value of Equity Awards Granted in any Prior Fiscal Year that were Outstanding and Unvested at Year End Change in Fair Value as of the Vesting Date of Equity Awards Granted in any Prior Fiscal Year that Vested during Fiscal Year 2023 6,731,789 — — 3,357,219 (3,680,145) (419,131) (7,473,846) 2022 5,952,960 — — 4,081,079 (4,455,458) (70,941) (6,398,280) 2021 10,549,966 999,988 619,398 16,040,965 4,839,758 7,895,297 17,845,464 | | |
| Non-PEO NEO Average Total Compensation Amount | $ 2,172,388 | 1,700,867 | 2,536,544 |
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,246,283 | 977,421 | 3,868,727 |
| Adjustment to Non-PEO NEO Compensation Footnote | The average CAP for our Other NEOs was determined in accordance with Item 402(v) of Regulation S-K by making the following adjustments to the Average SCT Totals: Amounts Deducted from Average Amounts Added to Average Net Adjustment Average Grant Date Fair Value of Stock Awards Fair Value at Prior Year-End of Equity Awards Forfeited During Fiscal Year Average Change in Pension Value Average Vesting Date Fair Value of Equity Awards Granted and Vested during Fiscal Year Average Year-End Fair Value of Equity Awards Granted during Fiscal Year that were Outstanding and Unvested at Year End Average Year-over-Year Change in Year-End Fair Value of Equity Awards Granted in any Prior Fiscal Year that were Outstanding and Unvested at Year End Average Change in Fair Value as of the Vesting Date of Equity Awards Granted in any Prior Fiscal Year that Vested during Fiscal Year Pension Service Cost 2023 901,975 — — — 449,825 (324,998) (148,957) — (926,105) 2022 694,350 — — — 476,015 (329,767) (175,344) — (723,446) 2021 1,599,926 26,640 — 587,407 1,294,501 112,712 964,129 — 1,332,183 | | |
| Compensation Actually Paid vs. Total Shareholder Return | | | |
| Compensation Actually Paid vs. Net Income | | | |
| Compensation Actually Paid vs. Company Selected Measure | | | |
| Total Shareholder Return Amount | $ 89.51 | 116.55 | 158.10 |
| Peer Group Total Shareholder Return Amount | 35.76 | 72.41 | 121.30 |
| Net Income (Loss) | $ 313,800,000 | $ 435,000,000 | $ 405,600,000 |
| Company Selected Measure Amount | 1,010,000,000 | 884,100,000 | 733,700,000 |
| PEO Name | Chris Caldwell | Chris Caldwell | Chris Caldwell |
| Additional 402(v) Disclosure | The table above includes the compensation of the following PEO and Other NEOs for the years shown below: PEO Other NEOs 2023 Chris Caldwell Andre Valentine, Cormac Twomey, Rick Rosso, and Jane Fogarty 2022 Chris Caldwell Andre Valentine, Cormac Twomey, Rick Rosso, and Jane Fogarty 2021 Chris Caldwell Andre Valentine, Cormac Twomey, Rick Rosso, Jane Fogarty, and Steve Richie | | |
| Measure:: 1 | | | |
| Pay vs Performance Disclosure | | | |
| Name | Adjusted EBITDA | | |
| Non-GAAP Measure Description | Non-GAAP operating income is operating income, adjusted to exclude acquisition-related and integration expenses, including related restructuring costs, amortization of intangible assets, share-based compensation, and gain on divestitures and related transaction costs. 65% of our NEOs’ SMIP awards for fiscal year 2023 were based on non-GAAP operating income performance for fiscal year 2023. See page 37 of our Annual Report on Form 10-K for the fiscal year ended November 30, 2023 for a reconciliation of non-GAAP operating income to operating income, as reported. | | |
| Measure:: 2 | | | |
| Pay vs Performance Disclosure | | | |
| Name | Non-GAAP Operating Income | | |
| Measure:: 3 | | | |
| Pay vs Performance Disclosure | | | |
| Name | Revenue | | |
| PEO | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | $ (7,473,846) | $ (6,398,280) | $ 17,845,464 |
| PEO | Grant Date Fair Value of Stock Awards [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (6,731,789) | (5,952,960) | (10,549,966) |
| PEO | Grant Date Fair Value of Stock Options [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 0 | 0 | (999,988) |
| PEO | Vesting Date Fair Value of Equity Awards Granted and Vested during Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 0 | 0 | 619,398 |
| PEO | Year-End Fair Value of Equity Awards Granted during Fiscal Year that were Outstanding and Unvested at Year End [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 3,357,219 | 4,081,079 | 16,040,965 |
| PEO | Year-over-Year Change in Year-End Fair Value of Equity Awards Granted in any Prior Fiscal Year that were Outstanding and Unvested at Year End [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (3,680,145) | (4,455,458) | 4,839,758 |
| PEO | Change in Fair Value as of the Vesting Date of Equity Awards Granted in any Prior Fiscal Year that Vested during Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (419,131) | (70,941) | 7,895,297 |
| Non-PEO NEO | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (926,105) | (723,446) | 1,332,183 |
| Non-PEO NEO | Average Grant Date Fair Value of Stock Awards [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (901,975) | (694,350) | (1,599,926) |
| Non-PEO NEO | Fair Value at Prior Year-End of Equity Awards Forfeited During Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 0 | 0 | (26,640) |
| Non-PEO NEO | Average Change in Pension Value [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 0 | 0 | 0 |
| Non-PEO NEO | Average Vesting Date Fair Value of Equity Awards Granted and Vested during Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 0 | 0 | 587,407 |
| Non-PEO NEO | Average Year-End Fair Value of Equity Awards Granted during Fiscal Year that were Outstanding and Unvested at Year End [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | 449,825 | 476,015 | 1,294,501 |
| Non-PEO NEO | Average Year-over-Year Change in Year-End Fair Value of Equity Awards Granted in any Prior Fiscal Year that were Outstanding and Unvested at Year End [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (324,998) | (329,767) | 112,712 |
| Non-PEO NEO | Average Change in Fair Value as of the Vesting Date of Equity Awards Granted in any Prior Fiscal Year that Vested during Fiscal Year [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | (148,957) | (175,344) | 964,129 |
| Non-PEO NEO | Pension Service Cost [Member] | | | |
| Pay vs Performance Disclosure | | | |
| Adjustment to Compensation, Amount | $ 0 | $ 0 | $ 0 |
