Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Before - Tax
Net change		$ (949,946)	$ (193,420)	$ 83,250
Tax Effect
Net change		274,698	58,714	(20,517)
Net-of- Tax
Amortization of unrealized losses on transferred securities	$ (113,000)	(113,000)
Other comprehensive (loss) income		(675,248)	(134,706)	62,733
Debt Securities
Before - Tax
Net unrealized (losses) gains arising during the period		(881,516)	(194,393)	89,868
Net realized (gains) losses reclassified into net income		(1,306)	(1,568)	(12,299)
Amortization of unrealized losses on transferred securities		18,000	0	0
Net change		(864,822)	(195,961)	77,569
Tax Effect
Net unrealized gains (losses) arising during the period		260,646	57,547	(26,539)
Net realized (gains) losses reclassified into net income		386	464	3,636
Amortization of unrealized losses on transferred securities		(5,322)	0	0
Net change		255,710	58,011	(22,903)
Net-of- Tax
Net unrealized gains (losses) arising during the period		(620,870)	(136,846)	63,329
Net realized (gains) losses reclassified into net income		(920)	(1,104)	(8,663)
Amortization of unrealized losses on transferred securities		12,678	0	0
Net realized gains reclassified into net income		11,758	(1,104)	(8,663)
Other comprehensive (loss) income		(609,112)	(137,950)	54,666
Cash Flow Hedges
Net-of- Tax
Net unrealized gains (losses) arising during the period		(52,623)	866	(1,149)
Net realized gains reclassified into net income		2,835	621	(81)
Other comprehensive (loss) income		(49,788)	1,487	(1,230)
Foreign Currency Translation Adjustments
Before - Tax
Net unrealized (losses) gains arising during the period		(15,059)	463	7,398
Net change		(15,059)	463	7,398
Tax Effect
Net unrealized gains (losses) arising during the period		(1,289)	1,294	1,899
Net change		(1,289)	1,294	1,899
Net-of- Tax
Net unrealized gains (losses) arising during the period		(16,348)	1,757	9,297
Net realized gains reclassified into net income		0	0	0
Other comprehensive (loss) income		(16,348)	1,757	9,297
Cash Flow Hedges
Before - Tax
Net unrealized (losses) gains arising during the period		(74,069)	1,210	(1,604)
Net realized gains reclassified into net income		4,004	868	(113)
Net change		(70,065)	2,078	(1,717)
Tax Effect
Net unrealized gains (losses) arising during the period		21,446	(344)	455
Net realized gains reclassified into net income		(1,169)	(247)	32
Net change		20,277	(591)	487
Net-of- Tax
Net unrealized gains (losses) arising during the period		(52,623)	866	(1,149)
Net realized gains reclassified into net income		2,835	621	(81)
Other comprehensive (loss) income		$ (49,788)	$ 1,487	$ (1,230)