Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 1,234	$ 1,454	$ 2,644	$ 2,781
Weighted average number of common shares	1,331,953	1,330,160	1,330,286	1,329,601
Effect of dilutive outstanding equity-based awards	5,354	8,704	8,060	10,624
Weighted average number of diluted common shares	1,337,307	1,338,864	1,338,346	1,340,225
Basic EPS	$ 0.93	$ 1.09	$ 1.99	$ 2.09
Diluted EPS	$ 0.92	$ 1.09	$ 1.98	$ 2.08
Anti-dilutive awards	9,123	4,843	4,251	130