Consolidated Statements of Financial Condition (Parenthetical) - USD ($)	Nov. 30, 2024	Nov. 30, 2023
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 120,414,000	$ 110,198,000
Financial instruments owned	24,138,274,000	21,747,473,000
Assets held for sale	51,885,000	1,545,472,000
Other assets	3,072,302,000	2,650,640,000
Liabilities and Equity
Other secured financings	24,848,000	3,898,000
Long-term debt	$ 2,351,346,000	$ 1,708,443,000
Equity
Preferred shares, par value (in dollars per share)	$ 1	$ 1
Preferred shares, authorized (in shares)	70,000	70,000
Preferred shares, issued (in shares)	55,125	42,000
Preferred shares, outstanding (in shares)	55,125	42,000
Preferred shares, liquidation preference	$ 17,500	$ 17,500
Common shares, authorized (in shares)	565,000,000	565,000,000
Common shares, issued after deducting shares held in treasury (in shares)		210,626,642
Common shares, outstanding after deducting shares held in treasury (in shares)		210,626,642
Structured notes | Unsecured Debt
Liabilities and Equity
Long-term debt	$ 2,351,346,000	$ 1,708,443,000
Voting Common Stock
Equity
Common shares, par value (in dollars per share)	$ 1.00	$ 1
Common shares, authorized (in shares)	565,000,000	565,000,000
Common shares, issued after deducting shares held in treasury (in shares)	205,504,272	210,626,642
Common shares, outstanding after deducting shares held in treasury (in shares)	205,504,272	210,626,642
Treasury stock, shares (in shares)	115,613,798	110,491,428
Nonvoting Common Stock
Equity
Common shares, par value (in dollars per share)	$ 1	$ 1
Common shares, authorized (in shares)	35,000,000	35,000,000
Common shares, issued after deducting shares held in treasury (in shares)	0	0
Common shares, outstanding after deducting shares held in treasury (in shares)	0	0
VIEs, primary beneficiary
Assets held for sale		$ 181,900,000
Other assets	$ 429,347,000	244,604,000
Asset Pledged as Collateral
Financial instruments owned	$ 18,441,751,000	$ 17,158,747,000