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Accumulated Other Comprehensive Income (Loss) - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 6,534,654	$ 5,595,408	$ 6,340,350	$ 5,562,900
Other comprehensive income (loss) before reclassifications	43,955	(18,562)	137,625	(66,230)
Amounts reclassified from AOCI to income	4,946	6,782	8,810	13,631
Ending balance	8,126,387	6,075,072	8,126,387	6,075,072
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(648,509)	(779,628)	(746,043)	(738,809)
Ending balance	(599,608)	(791,408)	(599,608)	(791,408)
Unrealized Gains and Losses on Available-for-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(582,779)	(685,969)	(668,063)	(652,518)
Other comprehensive income (loss) before reclassifications	40,590	(13,347)	125,818	(46,810)
Amounts reclassified from AOCI to income	31	(2)	87	10
Ending balance	(542,158)	(699,318)	(542,158)	(699,318)
Unrecognized Gains and Losses on Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(79,373)	(92,251)	(82,294)	(95,472)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCI to income	3,037	3,265	5,958	6,486
Ending balance	(76,336)	(88,986)	(76,336)	(88,986)
Gains and Losses on Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	13,643	(1,408)	4,314	9,181
Other comprehensive income (loss) before reclassifications	3,365	(5,215)	11,807	(19,420)
Amounts reclassified from AOCI to income	1,878	3,519	2,765	7,135
Ending balance	$ 18,886	$ (3,104)	$ 18,886	$ (3,104)

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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