Non-U.S. Activities - Schedule Of Results From Non-U.S. Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 12,027	$ 11,703	$ 11,756
Income before income tax expense	3,171	2,899	2,712
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	5,371	5,177	5,230
Income before income tax expense	1,522	1,326	1,248
U.S.
Segment Reporting Information [Line Items]
Total revenue	6,656	6,526	6,526
Income before income tax expense	$ 1,649	$ 1,573	$ 1,464