Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 3,060	$ 1,085	$ 1,715
Other comprehensive income (loss), net of tax	(789)	508	654
Translation adjustments and net investment hedges, net change	0	0	1
Comprehensive income	2,271	1,593	2,369
Unrealized gains on investment securities
Net unrealized gains (losses) arising during the period	(656)	564	741
Net realized gains reclassified to net income	79	132	60
Other comprehensive income (loss), net of tax	(735)	432	681
Translation adjustments and net investment hedges
Other comprehensive income (loss), net of tax	0	3	5
Net investment hedges
Other comprehensive income (loss), net of tax	0	(3)	(4)
Cash flow hedges
Net unrealized gains (losses) arising during the period	0	129	(7)
Net realized gains reclassified to net income	47	49	10
Other comprehensive income (loss), net of tax	(47)	80	(17)
Defined benefit pension plans
Net unrealized gains (losses) arising during the period	(8)	(4)	(11)
Net realized gains reclassified to net income	(1)	0	0
Other comprehensive income (loss), net of tax	$ (7)	$ (4)	$ (11)