CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Income and Comprehensive Income
Net income	$ 136,609	$ 422,395	$ 446,748	$ 845,502
Other comprehensive (loss) income before tax:
Foreign currency translation adjustment	(976)	7,206	(220)	10,346
Adjustment of pension and postretirement benefit plans	0	0	0	2,030
Amortization of net losses of pension and postretirement benefit plans	4,814	3,911	14,440	11,733
Unrealized holding losses on debt securities arising during the period	(234,827)	(876,854)	(99,360)	(2,716,474)
Amortization of unrealized losses of debt securities transfer from available-for-sale to held-to-maturity	43,783	0	128,726	0
Unrealized net (losses) gains on cash flow hedges	0	392	(30)	3,903
Reclassification adjustment for net (gains) losses included in net income	0	828	(41)	(751)
Other comprehensive (loss) income before tax	(187,206)	(864,517)	43,515	(2,689,213)
Income tax (expense) benefit	(18,301)	93,202	(52,529)	289,951
Total other comprehensive loss, net of tax	(205,507)	(771,315)	(9,014)	(2,399,262)
Comprehensive (loss) income, net of tax	$ (68,898)	$ (348,920)	$ 437,734	$ (1,553,760)