Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 1,410	$ 1,327
Weighted average number of common shares	1,328,602	1,329,037
Effect of dilutive outstanding equity-based awards	10,878	12,526
Weighted average number of diluted common shares	1,339,480	1,341,563
Basic EPS	$ 1.06	$ 1.00
Diluted EPS	$ 1.05	$ 0.99
Anti-dilutive awards	621	0