Earnings/(Loss) Per Share of Common Stock - Computation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Number of shares on which basic earnings per share is calculated:
Weighted-average shares outstanding during period (in shares)	909,855,943	901,470,793	908,691,415	900,393,410
Add - Incremental shares under stock-based compensation plans (in shares)	7,584,035	7,518,749	8,096,637	7,946,998
Add - Incremental shares associated with contingently issuable shares (in shares)	2,012,519	1,760,192	1,860,836	1,647,528
Number of shares on which diluted earnings per share is calculated (in shares)	919,452,496	910,749,734	918,648,888	909,987,935
Net income on which basic earnings per share is calculated
Income from continuing operations	$ 1,581	$ 1,465	$ 2,515	$ 2,127
Income/(loss) from discontinued operations, net of tax	2	(73)	(4)	(2)
Net income	1,583	1,392	2,511	2,125	[1]
Net income/(loss) on which diluted earnings per share is calculated
Income from continuing operations	1,581	1,465	2,515	2,127
Net income applicable to contingently issuable shares	0	0	0	0
Income from continuing operations on which diluted earnings per share is calculated	1,581	1,465	2,515	2,127
Income/(loss) from discontinued operations, net of tax, on which diluted earnings per share is calculated	2	(73)	(4)	(2)
Net income on which diluted earnings per share is calculated	$ 1,583	$ 1,392	$ 2,511	$ 2,125
Assuming dilution:
Continuing operations (in dollars per share)	$ 1.72	$ 1.61	$ 2.74	$ 2.34
Discontinued operations (in dollars per share)	0.00	(0.08)	0.00	0.00
Total (in dollars per share)	1.72	1.53	2.73	2.34
Basic:
Continuing operations (in dollars per share)	1.74	1.62	2.77	2.36
Discontinued operations (in dollars per share)	0.00	(0.08)	0.00	0.00
Total (in dollars per share)	$ 1.74	$ 1.54	$ 2.76	$ 2.36

[1] Includes immaterial cash flows from discontinued operations.