Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues:
Commissions		$ 756,024	$ 673,597	$ 710,589
Principal transactions		604,564	490,440	529,033
Investment banking		994,831	731,255	971,485
Asset management		1,536,674	1,299,496	1,262,919
Interest		2,016,464	1,955,745	1,099,115
Other income		43,129	8,747	19,685
Total revenues		5,951,686	5,159,280	4,592,826
Interest expense		981,366	810,336	201,387
Net revenues	[1]	4,970,320	4,348,944	4,391,439
Non-interest expenses:
Compensation and benefits		2,916,229	2,554,581	2,586,232
Occupancy and equipment rental		362,402	339,322	313,247
Communications and office supplies		194,382	184,652	175,135
Commissions and floor brokerage		62,823	58,344	57,752
Provision for credit losses		25,402	24,999	33,506
Other operating expenses		480,638	480,354	340,451
Total non-interest expenses		4,041,876	3,642,252	3,506,323
Income before income tax expense		928,444	706,692	885,116
Provision for income taxes		197,065	184,156	222,961
Net income		731,379	522,536	662,155
Preferred dividends		37,281	37,281	37,281
Net income available to common shareholders		$ 694,098	$ 485,255	$ 624,874
Earnings per common share:
Basic		$ 6.67	$ 4.55	$ 5.74
Diluted		6.25	4.28	5.32
Cash dividends declared per common share		$ 1.68	$ 1.44	$ 1.2
Weighted-average number of common shares outstanding:
Basic		104,066	106,661	108,848
Diluted		110,975	113,453	117,540

[1] No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2024, 2023, and 2022.