CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)		Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Noncontrolling Interest
Beginning balance at Dec. 31, 2021		$ 5,296,800,000		$ 537,145,000	$ 169,384,000	$ 3,894,109,000	$ (931,497,000)	$ (82,321,000)	$ 1,709,980,000		$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		552,132,000							552,132,000
Other comprehensive income (loss), net of income taxes		(1,451,993,000)						(1,451,993,000)
Cash dividends declared on common stock		(148,297,000)							(148,297,000)
Cash dividends declared on preferred stock	[1]	(24,872,000)							(24,872,000)
Repurchases of common stock including costs to repurchase		(12,987,000)					(12,987,000)
Restricted share unit vesting and taxes paid related to net share settlement		(9,688,000)			391,000	(5,677,000)			(4,402,000)
Stock options exercised, net		6,434,000			323,000	6,111,000
Share-based compensation expense		22,186,000				22,186,000
Ending balance at Sep. 30, 2022		4,229,715,000		537,145,000	170,098,000	3,916,729,000	(944,484,000)	(1,534,314,000)	2,084,541,000		0
Beginning balance at Dec. 31, 2021		5,296,800,000		537,145,000	169,384,000	3,894,109,000	(931,497,000)	(82,321,000)	1,709,980,000		0
Ending balance at Dec. 31, 2022		$ 4,475,801,000	$ (297,000)	537,145,000	170,141,000	3,920,346,000	(944,484,000)	(1,442,117,000)	2,234,770,000	$ (297,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting standards update [Extensible List]		Accounting Standards Update 2023-02 [Member]
Beginning balance at Jun. 30, 2022		$ 4,584,438,000		537,145,000	170,013,000	3,908,118,000	(944,484,000)	(1,026,705,000)	1,940,351,000		0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		203,044,000							203,044,000
Other comprehensive income (loss), net of income taxes		(507,609,000)						(507,609,000)
Cash dividends declared on common stock		(49,439,000)							(49,439,000)
Cash dividends declared on preferred stock	[1]	(8,291,000)							(8,291,000)
Restricted share unit vesting and taxes paid related to net share settlement		(699,000)			40,000	385,000			(1,124,000)
Stock options exercised, net		830,000			45,000	785,000
Share-based compensation expense		7,441,000				7,441,000
Ending balance at Sep. 30, 2022		4,229,715,000		537,145,000	170,098,000	3,916,729,000	(944,484,000)	(1,534,314,000)	2,084,541,000		0
Beginning balance at Dec. 31, 2022		4,475,801,000	$ (297,000)	537,145,000	170,141,000	3,920,346,000	(944,484,000)	(1,442,117,000)	2,234,770,000	$ (297,000)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		472,568,000							473,364,000		(796,000)
Other comprehensive income (loss), net of income taxes		(237,287,000)						(237,287,000)
Cash dividends declared on common stock		(166,602,000)							(166,602,000)
Cash dividends declared on preferred stock	[2]	(26,254,000)							(26,254,000)
Restricted share unit vesting and taxes paid related to net share settlement		(10,951,000)			517,000	(8,821,000)			(2,647,000)
Stock options exercised, net		3,734,000			202,000	3,532,000
Share-based compensation expense		25,450,000				25,450,000
Acquisition of noncontrolling interest		25,406,000									25,406,000
Ending balance at Sep. 30, 2023		4,561,568,000		537,145,000	170,860,000	3,940,507,000	(944,484,000)	(1,679,404,000)	2,512,334,000		24,610,000
Beginning balance at Jun. 30, 2023		4,807,768,000		537,145,000	170,808,000	3,933,548,000	(944,484,000)	(1,395,175,000)	2,480,686,000		25,240,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		96,465,000							97,095,000		(630,000)
Other comprehensive income (loss), net of income taxes		(284,229,000)						(284,229,000)
Cash dividends declared on common stock		(55,564,000)							(55,564,000)
Cash dividends declared on preferred stock	[2]	(9,672,000)							(9,672,000)
Restricted share unit vesting and taxes paid related to net share settlement		(749,000)			51,000	(589,000)			(211,000)
Stock options exercised, net		9,000			1,000	8,000
Share-based compensation expense		7,540,000				7,540,000
Ending balance at Sep. 30, 2023		$ 4,561,568,000		$ 537,145,000	$ 170,860,000	$ 3,940,507,000	$ (944,484,000)	$ (1,679,404,000)	$ 2,512,334,000		$ 24,610,000

[1] For the three and nine months ended September 30, 2022, dividends per share were $0.39 and $1.18 for Series D and $0.37 and $1.10 for Series E Preferred Stock, respectively.

[2] For the three and nine months ended September 30, 2023, dividends per share were $0.57 and $1.35 for Series D and $0.37 and $1.10 for Series E Preferred Stock, respectively.