CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 96,280	$ 146,551
Unrealized losses and gains on available for sale securities
Net (losses) gains arising during the period	(10,205)	17,170
Total	(10,205)	17,170
Unrealized gains and losses on derivatives (cash flow hedges)
Net gains on derivatives arising during the period	0	2,798
Less reclassification adjustment for net (gains) losses included in net income	(222)	379
Total	(222)	3,177
Defined benefit pension and postretirement benefit plans
Amortization of actuarial net loss	35	8
Other comprehensive (loss) income, net	(10,392)	20,355
Total comprehensive income	$ 85,888	$ 166,906