Segment Reporting - Net Revenues, Expenses and Total Assets by Segment (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
May 31, 2022 |
May 31, 2021 |
May 31, 2022 |
May 31, 2021 |
Nov. 30, 2021 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Net revenues | $ 1,129,525 | $ 1,617,418 | $ 2,671,299 | $ 3,746,784 | |
| Non-interest expenses | 940,489 | 1,188,119 | 2,045,369 | 2,646,315 | |
| Earnings before income taxes | 189,036 | 429,299 | 625,930 | 1,100,469 | |
| Assets | 53,156,330 | 53,156,330 | $ 54,768,900 | ||
| Investment Banking and Capital Markets | |||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Net revenues | 1,098,400 | 1,573,100 | 2,580,200 | 3,531,900 | |
| Non-interest expenses | 910,400 | 1,146,400 | 1,971,300 | 2,562,600 | |
| Earnings before income taxes | 188,000 | 426,700 | 608,900 | 969,300 | |
| Assets | 49,837,800 | 49,837,800 | 51,697,400 | ||
| Asset Management | |||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||||
| Net revenues | 31,100 | 44,300 | 91,100 | 214,900 | |
| Non-interest expenses | 30,100 | 41,700 | 74,100 | 83,700 | |
| Earnings before income taxes | 1,000 | $ 2,600 | 17,000 | $ 131,200 | |
| Assets | $ 3,318,500 | $ 3,318,500 | $ 3,071,500 | ||