Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 221,004	$ (16,747)
Other comprehensive income (loss), net of tax:
Investment securities available-for-sale	71,618	(244,879)
Derivative instruments	21,374	(7,844)
Defined benefit pension and other postretirement benefit plans	3,948	(420)
Other comprehensive income (loss), net of tax	96,940	(253,143)
Comprehensive income (loss)	$ 317,944	$ (269,890)