Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent	Treasury Stock [Member]
Balance, beginning of period at Dec. 31, 2023			$ 685,000	$ 16,749	$ 1,905,097	$ 3,398,610	$ (74,326)	$ (636,699)
Net Income (Loss)	$ 163,575					163,575
Unit amortization, net of forfeitures					42,157
Dividends declared, Common						(48,608)
Dividends declared, Preferred						(9,320)
Distributions under employee plans					(141,805)	(89,960)		133,314
Issuance of preferred stock			0
Unrealized gains/(losses) on securities, net of tax	(8,204)	[1],[2]					(8,204)
Foreign currency translation adjustment, net of tax	(1,644)	[1]					(1,644)
Other					268	447
Common stock repurchased	(60,700)							(60,710)
Balance, end of period at Mar. 31, 2024	5,273,941		685,000	16,749	1,805,717	3,414,744	(84,174)	(564,095)
Balance, beginning of period at Dec. 31, 2024	5,686,770		685,000	16,749	1,895,568	3,794,609	(75,638)	(629,518)
Net Income (Loss)	52,992					52,992
Unit amortization, net of forfeitures					46,888
Dividends declared, Common						(52,778)
Dividends declared, Preferred						(9,320)
Distributions under employee plans					(130,912)	(65,053)		78,882
Issuance of preferred stock			0
Unrealized gains/(losses) on securities, net of tax	20,814	[1],[2]					20,814
Foreign currency translation adjustment, net of tax	3,073	[1]					3,073
Other					(51)	54
Common stock repurchased	(93,200)							(93,173)
Balance, end of period at Mar. 31, 2025	$ 5,538,186		$ 685,000	$ 16,749	$ 1,811,493	$ 3,720,504	$ (51,751)	$ (643,809)

[1] Net of a tax expense of $4.7 million and tax benefit of $3.3 million for the three months ended March 31, 2025 and 2024, respectively.

[2] There were no reclassifications to earnings for the three months ended March 31, 2025 and 2024.