Stock Compensation - Options Vested and Expected to Vest (Details) - Long-term incentive and director compensation plans - Employee Stock Option $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, vested and expected to vest (in shares) | shares	24	[1]
Weighted average remaining contractual life, vested and expected to vest (in years)	5 years 8 months 12 days	[1]
Weighted average exercise price per share, vested and expected to vest (in dollars per share) | $ / shares	$ 136.44	[1]
Intrinsic value, vested and expected to vest (millions of dollars)	$ 1,240	[1]
Outstanding options exercisable (in shares) | shares	15
Weighted average remaining contractual life, options exercisable	4 years
Weighted average exercise price per share, options exercisable (in dollars per share) | $ / shares	$ 114.61
Intrinsic value, options exercisable (millions of dollars)	$ 1,080
Aggregate intrinsic value of stock options outstanding, excluding the effects of expected forfeitures	$ 1,240

[1] Includes effects of expected forfeitures. Excluding the effects of expected forfeitures, the aggregate intrinsic value of stock options outstanding was $1.24 billion.