Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($)	Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent	Treasury Stock
Balance, beginning of period at Dec. 31, 2020			$ 535,000,000	$ 16,749,000	$ 1,888,982,000	$ 2,078,135,000	$ 27,639,000	$ (307,739,000)
Unit amortization, net of forfeitures					93,840,000
Distributions under employee plans					(109,563,000)	(30,315,000)		67,714,000
Issuance of preferred stock			300,000,000		(9,279,000)
Redemption of preferred stock			(150,000,000)
Common stock repurchased	$ (86,400,000)							(84,723,000)
Net income	563,468,000					563,468,000
Dividends declared, Common						(55,890,000)
Dividends declared, Preferred						(26,267,000)
Unrealized gains/(losses) on securities, net of tax	(2,147,000)	[1],[2]					(2,147,000)
Foreign currency translation adjustment, net of tax	(3,907,000)	[1]					(3,907,000)
Other					31,000	(404,000)
Balance, end of period at Sep. 30, 2021	4,791,324,000		685,000,000	16,749,000	1,864,011,000	2,528,727,000	21,585,000	(324,748,000)
Balance, beginning of period at Jun. 30, 2021			535,000,000	16,749,000	1,846,986,000	2,365,907,000	27,266,000	(283,118,000)
Unit amortization, net of forfeitures					29,595,000
Distributions under employee plans					(3,266,000)	(1,169,000)		2,086,000
Issuance of preferred stock			300,000,000		(9,279,000)
Redemption of preferred stock			(150,000,000)
Common stock repurchased	(44,800,000)							(43,716,000)
Net income	192,376,000					192,376,000
Dividends declared, Common						(18,586,000)
Dividends declared, Preferred						(9,689,000)
Unrealized gains/(losses) on securities, net of tax	2,971,000	[1],[2]					2,971,000
Foreign currency translation adjustment, net of tax	(8,652,000)	[1]					(8,652,000)
Other					(25,000)	(112,000)
Balance, end of period at Sep. 30, 2021	4,791,324,000		685,000,000	16,749,000	1,864,011,000	2,528,727,000	21,585,000	(324,748,000)
Balance, beginning of period at Dec. 31, 2021	5,034,959,000		685,000,000	16,749,000	1,922,382,000	2,757,208,000	4,718,000	(351,098,000)
Unit amortization, net of forfeitures					114,536,000
Distributions under employee plans					(122,467,000)	(52,523,000)		85,153,000
Common stock repurchased	(30,700,000)							(30,666,000)
Net income	485,534,000					485,534,000
Dividends declared, Common						(111,831,000)
Dividends declared, Preferred						(27,961,000)
Unrealized gains/(losses) on securities, net of tax	(189,820,000)	[1],[2]					(189,820,000)
Unrealized gains on cash flow hedging activities, net of tax							70,436,000
Foreign currency translation adjustment, net of tax	(28,975,000)	[1]					(28,975,000)
Other					(192,000)	1,167,000
Balance, end of period at Sep. 30, 2022	5,227,350,000		685,000,000	16,749,000	1,914,259,000	3,051,594,000	(143,641,000)	(296,611,000)
Balance, beginning of period at Jun. 30, 2022			685,000,000	16,749,000	1,884,455,000	2,948,280,000	(110,043,000)	(299,704,000)
Unit amortization, net of forfeitures					33,358,000
Distributions under employee plans					(3,300,000)	(1,612,000)		3,093,000
Common stock repurchased	0
Net income	151,169,000					151,169,000
Dividends declared, Common						(37,299,000)
Dividends declared, Preferred						(9,320,000)
Unrealized gains/(losses) on securities, net of tax	(54,290,000)	[1],[2]					(54,290,000)
Unrealized gains on cash flow hedging activities, net of tax							32,097,000
Foreign currency translation adjustment, net of tax	(11,405,000)	[1]					(11,405,000)
Other					(254,000)	376,000
Balance, end of period at Sep. 30, 2022	$ 5,227,350,000		$ 685,000,000	$ 16,749,000	$ 1,914,259,000	$ 3,051,594,000	$ (143,641,000)	$ (296,611,000)

[1] Net of tax benefit of $12.1 million and $1.9 million for the three months ended September 30, 2022 and 2021, respectively. Net of tax benefit of $50.7 million and $2.0 million for the nine months ended September 30, 2022 and 2021, respectively.

[2] There were no reclassifications to earnings for the three and nine months ended September 30, 2022 and 2021.