Shareholders' Equity - Schedule of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Net unrealized gains (losses) on cash flow hedges	$ (2)	$ 57	$ (70)
Net unrealized gains (losses) on available-for-sale securities portfolio	0	936	426
Net unrealized gains (losses) related to reclassified available-for-sale securities	(31)	(55)	19
Net unrealized gains (losses) on available-for-sale securities	(31)	881	445
Net unrealized (losses) on available-for-sale securities designated in fair value hedges	(17)	(33)	(36)
Net unrealized gains (losses) on hedges of net investments in non-U.S. subsidiaries	68	(204)	46
Other-than-temporary impairment on held-to-maturity securities related to factors other than credit	(2)	(2)	(2)
Net unrealized (losses) on retirement plans	(130)	(178)	(187)
Foreign currency translation	(1,019)	(334)	(1,072)
Total	$ (1,133)	$ 187	$ (876)