CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Income and Comprehensive Income
Net income	$ 151,160	$ 211,421	$ 310,139	$ 423,107
Other comprehensive (loss) income before tax:
Foreign currency translation adjustment	6,001	5,998	756	3,140
Adjustment of pension and postretirement benefit plans	0	0	0	2,030
Amortization of net losses of pension and postretirement benefit plans	4,813	3,911	9,626	7,822
Unrealized holding (losses) gains on debt securities arising during the period	(77,851)	(620,597)	135,467	(1,839,620)
Amortization of unrealized losses of debt securities transfer from available-for-sale to held-to-maturity	42,903	0	84,943	0
Unrealized net (losses) gains on cash flow hedges	0	(377)	(30)	3,511
Reclassification adjustment for net gains included in net income	0	(880)	(41)	(1,579)
Other comprehensive (loss) income before tax	(24,134)	(611,945)	230,721	(1,824,696)
Income tax (expense) benefit	(2,476)	56,167	(34,228)	196,749
Total other comprehensive (loss) income, net of tax	(26,610)	(555,778)	196,493	(1,627,947)
Comprehensive income (loss), net of tax	$ 124,550	$ (344,357)	$ 506,632	$ (1,204,840)