Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Commissions		$ 710,589	$ 809,500	$ 760,627
Principal transactions		529,033	581,164	588,303
Investment banking		971,485	1,565,381	952,308
Asset management		1,262,919	1,206,516	917,424
Interest		1,099,115	548,400	523,832
Other income		19,685	72,125	75,345
Total revenues		4,592,826	4,783,086	3,817,839
Interest expense		201,387	45,998	65,778
Net revenues	[1]	4,391,439	4,737,088	3,752,061
Non-interest expenses:
Compensation and benefits		2,586,232	2,820,301	2,279,335
Occupancy and equipment rental		313,247	290,243	274,664
Communications and office supplies		175,135	165,490	164,736
Commissions and floor brokerage		57,752	59,681	55,960
Provision for credit losses		33,506	(11,502)	33,925
Other operating expenses		340,451	345,794	292,281
Total non-interest expenses		3,506,323	3,670,007	3,100,901
Income before income tax expense		885,116	1,067,081	651,160
Provision for income taxes		222,961	242,223	147,688
Net income		662,155	824,858	503,472
Preferred dividends		37,281	35,587	27,261
Net income available to common shareholders		$ 624,874	$ 789,271	$ 476,211
Earnings per common share:
Basic		$ 5.74	$ 7.34	$ 4.49
Diluted		5.32	6.66	4.16
Cash dividends declared per common share		$ 1.20	$ 0.60	$ 0.45
Weighted-average number of common shares outstanding:
Basic		108,848	107,536	106,174
Diluted		117,540	118,530	114,573

[1] No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2022, 2021, and 2020.