Unaudited Consolidated Statements of Changes in Shareholders Equity - USD ($) $ in Thousands	Total	Cumulative effect accounting adjustment	[1]	Common Stock	Additional Paid in Capital	Retained Earnings	Retained Earnings Cumulative effect accounting adjustment	[1]	Accumulated Other Comprehensive Income (Loss)	Unallocated Common Stock Held by ESOP
Beginning balance (in shares) at Dec. 31, 2020				186,758,154
Beginning Balance at Dec. 31, 2020	$ 3,428,052			$ 1,868	$ 1,854,068	$ 1,665,607			$ 54,234	$ (147,725)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common shareholders	(37,885)					(37,885)
Net income	119,578					119,578
Other comprehensive income (loss), net of tax	(87,309)								(87,309)
ESOP shares committed to be released	6,856				3,097					3,759
Ending balance (in shares) at Sep. 30, 2021				186,758,154
Ending balance at Sep. 30, 2021	3,429,292			$ 1,868	1,857,165	1,747,300			(33,075)	(143,966)
Beginning balance (in shares) at Dec. 31, 2020				186,758,154
Beginning Balance at Dec. 31, 2020	$ 3,428,052			$ 1,868	1,854,068	1,665,607			54,234	(147,725)
Ending balance (in shares) at Dec. 31, 2021	186,305,332			186,305,332
Ending balance at Dec. 31, 2021	$ 3,406,352	$ (20,098)		$ 1,863	1,835,241	1,768,653	$ (20,098)		(56,696)	(142,709)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13
Beginning balance (in shares) at Jun. 30, 2021				186,758,154
Beginning Balance at Jun. 30, 2021	$ 3,430,622			$ 1,868	1,856,241	1,723,979			(6,247)	(145,219)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common shareholders	(13,785)					(13,785)
Net income	37,106					37,106
Other comprehensive income (loss), net of tax	(26,828)								(26,828)
ESOP shares committed to be released	2,177				924					1,253
Ending balance (in shares) at Sep. 30, 2021				186,758,154
Ending balance at Sep. 30, 2021	$ 3,429,292			$ 1,868	1,857,165	1,747,300			(33,075)	(143,966)
Beginning balance (in shares) at Dec. 31, 2021	186,305,332			186,305,332
Beginning Balance at Dec. 31, 2021	$ 3,406,352	$ (20,098)		$ 1,863	1,835,241	1,768,653	$ (20,098)		(56,696)	(142,709)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common shareholders	(50,263)					(50,263)
Repurchased common stock (in shares)				(8,564,338)
Repurchased common stock	(170,771)			$ (86)	(170,685)
Issuance of restricted stock awards (in shares)				31,559
Issuance of restricted stock awards	0			$ 1	(1)
Share-based compensation	8,092				8,092
Net income	157,465					157,465
Other comprehensive income (loss), net of tax	(922,122)								(922,122)
ESOP shares committed to be released	$ 7,508				3,749					3,759
Ending balance (in shares) at Sep. 30, 2022	177,772,553			177,772,553
Ending balance at Sep. 30, 2022	$ 2,416,163			$ 1,778	1,676,396	1,855,757			(978,818)	(138,950)
Beginning balance (in shares) at Jun. 30, 2022				179,253,801
Beginning Balance at Jun. 30, 2022	2,718,396			$ 1,793	1,700,495	1,817,474			(661,163)	(140,203)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common shareholders	(16,494)					(16,494)
Repurchased common stock (in shares)				(1,481,248)
Repurchased common stock	(28,950)			$ (15)	(28,935)
Share-based compensation	3,561				3,561
Net income	54,777					54,777
Other comprehensive income (loss), net of tax	(317,655)								(317,655)
ESOP shares committed to be released	$ 2,528				1,275					1,253
Ending balance (in shares) at Sep. 30, 2022	177,772,553			177,772,553
Ending balance at Sep. 30, 2022	$ 2,416,163			$ 1,778	$ 1,676,396	$ 1,855,757			$ (978,818)	$ (138,950)

[1] Represents gross transition adjustment amount of $28.0 million, net of taxes of $7.9 million, to reflect the cumulative impact on retained earnings pursuant to the Company’s adoption of Accounting Standards Update 2016-13. Refer to Note 4, “Loans and Allowance for Credit Losses” within the Notes to the Unaudited Consolidated Financial Statements included in Part I, Item 1 in this Quarterly Report on Form 10-Q for additional discussion.