Incentive Stock Program - Stock Option Activity (Details) - Stock Options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Options
Outstanding at beginning of period (in shares)	28,288,046
Granted (in shares)	2,027,255
Exercised (in shares)	(1,664,222)
Lapsed (in shares)	(82,004)
Outstanding at end of period (in shares)	28,569,075	28,288,046
Exercisable at end of period (in shares)	23,921,284
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 70.64
Granted (in dollars per share)	106.03
Exercised (in dollars per share)	44.71
Lapsed (in dollars per share)	122.08
Outstanding at end of period (in dollars per share)	74.52	$ 70.64
Exercisable at end of period (in dollars per share)	$ 66.90
Weighted Average Remaining Life (Years)
Weighted average remaining life of options outstanding	4 years 9 months 18 days	5 years 3 months 18 days
Weighted-average remaining life of options exercisable	4 years 1 month 6 days
Aggregate Intrinsic Value
Aggregate intrinsic value of options outstanding	$ 1,073	$ 1,167
Aggregate intrinsic value of options exercisable	$ 1,064