Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 2,952,831	$ 2,579,123	$ 2,974,855	$ 2,471,790
Other comprehensive loss before reclassifications			(70,688)	(50,539)
Less: Amounts reclassified from accumulated other comprehensive loss			(24,750)	(272,749)
Net current-period other comprehensive loss			(45,938)	222,210
Ending balance	2,967,473	2,526,772	2,967,473	2,526,772
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(654,874)	(609,864)	(608,352)	(923,192)
Ending balance	(654,290)	(700,982)	(654,290)	(700,982)
Unrealized Gains and (Losses) on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(584,243)	(880,156)
Other comprehensive loss before reclassifications	(5,857)	(58,486)	(33,416)	(24,995)
Less: Amounts reclassified from accumulated other comprehensive loss	(5,463)	0	(5,463)	(258,540)
Net current-period other comprehensive loss			(27,953)	233,545
Ending balance	(612,196)	(646,611)	(612,196)	(646,611)
Unrealized Gains and (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			(31,571)	(50,159)
Other comprehensive loss before reclassifications	(8,673)	(40,832)	(37,272)	(25,544)
Less: Amounts reclassified from accumulated other comprehensive loss	(10,167)	(8,561)	(20,319)	(14,951)
Net current-period other comprehensive loss			(16,953)	(10,593)
Ending balance	(48,524)	(60,752)	(48,524)	(60,752)
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			7,462	7,123
Other comprehensive loss before reclassifications			0	0
Less: Amounts reclassified from accumulated other comprehensive loss			1,032	742
Net current-period other comprehensive loss			(1,032)	(742)
Ending balance	$ 6,430	$ 6,381	$ 6,430	$ 6,381