Earnings Per Share of Common Stock - Computation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Number of shares on which basic earnings per share is calculated:
Weighted-average shares outstanding during period (in shares)	928,006,724	917,178,779
Add - Incremental shares under stock-based compensation plans (in shares)	15,220,862	14,256,390
Add - Incremental shares associated with contingently issuable shares (in shares)	2,140,642	1,996,144
Number of shares on which diluted earnings per share is calculated (in shares)	945,368,229	933,431,312
Net income on which basic earnings per share is calculated
Income from continuing operations	$ 1,054	$ 1,575
Income from discontinued operations, net of tax	1	30
Net income on which basic earnings per share is calculated	1,055	1,605
Net income on which dilutive earnings per share is calculated	$ 1,055	$ 1,605
Assuming dilution:
Continuing operations (in dollars per share)	$ 1.12	$ 1.69
Discontinued operations (in dollars per share)	0.00	0.03
Total (in dollars per share)	1.12	1.72
Basic:
Continuing operations (in dollars per share)	1.14	1.72
Discontinued operations (in dollars per share)	0.00	0.03
Total (in dollars per share)	$ 1.14	$ 1.75