Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Shareholders' net income	$ 739	$ 1,408	$ 2,010	$ 4,135
Shares:
Weighted average	278,457	294,058	282,005	294,752
Common stock equivalents	2,939	3,073	3,037	2,911
Total shares	281,396	297,131	285,042	297,663
Earnings per share, basic	$ 2.65	$ 4.79	$ 7.13	$ 14.03
Earnings per share, effect of dilution	(0.02)	(0.05)	(0.08)	(0.14)
Earnings per share, diluted	$ 2.63	$ 4.74	$ 7.05	$ 13.89