Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent	$ 88,018	$ 83,248	$ 284,760	$ 273,762
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax	90,858	(56,924)	49,844	(69,512)
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities	2,147	2,327	6,329	6,883
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	0	0	197	0
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax	(23,198)	13,928	(14,060)	15,879
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax, Total	69,807	(40,669)	42,309	(46,751)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	25,609	(13,592)	(639)	(33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	4,705	4,516	14,297	9,097
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	7,405	2,315	5,213	5,488
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	37,718	(6,762)	18,871	(19,391)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(73)	(81)	(217)	(244)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(7)	(7)	(21)	15
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	20	23	(1,594)	31
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax, Total	(60)	(66)	(1,832)	(198)
Other Comprehensive Income (Loss), Net of Tax, Total	107,466	(47,497)	59,348	(66,340)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 195,483	$ 35,751	$ 344,108	$ 207,422