Computation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 1,071	$ 1,536	$ 3,715	$ 4,317
Weighted average number of common shares	1,333,522	1,326,539	1,331,377	1,328,569
Effect of dilutive outstanding equity-based awards	7,052	10,120	7,664	10,502
Weighted average number of diluted common shares	1,340,574	1,336,659	1,339,041	1,339,071
Basic EPS	$ 0.80	$ 1.16	$ 2.79	$ 3.25
Diluted EPS	$ 0.80	$ 1.15	$ 2.77	$ 3.22
Anti-dilutive awards	5,875	0	4,665	85