Earnings Per Share of Common Stock - Computation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Number of shares on which basic earnings per share is calculated:
Weighted-average shares outstanding during period (in shares)	938,533,632	928,006,724
Add - Incremental shares under stock-based compensation plans (in shares)	11,674,968	15,220,862
Add - Incremental shares associated with contingently issuable shares (in shares)	1,922,457	2,140,642
Number of shares on which diluted earnings per share is calculated (in shares)	952,131,057	945,368,229
Net income on which basic earnings per share is calculated
Income from continuing operations	$ 1,216	$ 1,054
Income from discontinued operations, net of tax	0	1
Net income on which basic earnings per share is calculated	1,216	1,055
Net income on which dilutive earnings per share is calculated	$ 1,216	$ 1,055
Assuming dilution:
Continuing operations (in dollars per share)	$ 1.28	$ 1.12
Discontinued operations (in dollars per share)	0.00	0.00
Total (in dollars per share)	1.28	1.12
Basic:
Continuing operations (in dollars per share)	1.30	1.14
Discontinued operations (in dollars per share)	0.00	0.00
Total (in dollars per share)	$ 1.30	$ 1.14