Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share Reconciliation [Abstract]
Net income	$ 4,999	$ 2,991	$ 2,842
Participating share-based awards — allocated income	(38)	(22)	(20)
Net income available to common shareholders -- basic	4,961	2,969	2,822
Net income available to common shareholders -- diluted	$ 4,961	$ 2,969	$ 2,822
Weighted average shares outstanding, basic (in shares)	228.0	229.7	237.0
Weighted average effects of dilutive securities - stock options and performance shares (in shares)	3.1	2.5	2.7
Weighted average shares outstanding, diluted (in shares)	231.1	232.2	239.7
Net income per common share, basic (in dollars per share)	$ 21.76	$ 12.93	$ 11.91
Net income per common share, diluted (in dollars per share)	$ 21.47	$ 12.79	$ 11.77