CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,559	$ 2,760	$ 1,534
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities	(2,512)	(673)	489
Net unrealized gains (losses) on derivatives	(1)	(1)	(1)
Defined benefit plans	76	53	(66)
Foreign currency translation adjustment	(171)	(13)	27
Total other comprehensive income (loss), net of tax	(2,608)	(634)	449
Total comprehensive income (loss)	$ (49)	$ 2,126	$ 1,983