Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 1,454	$ 1,559	$ 2,781	$ 2,893
Weighted average number of common shares	1,330,160	1,338,302	1,329,601	1,341,963
Effect of dilutive outstanding equity-based awards	8,704	11,190	10,624	12,247
Weighted average number of diluted common shares	1,338,864	1,349,492	1,340,225	1,354,210
Basic EPS	$ 1.09	$ 1.16	$ 2.09	$ 2.16
Diluted EPS	$ 1.09	$ 1.16	$ 2.08	$ 2.14
Anti-dilutive awards	4,843	0	130	3