Stock Compensation - Stock Options and RSUs Outstanding (Details) - Long-term incentive and director compensation plans - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Employee Stock Option
Stock Options, Shares
Options outstanding, Beginning balance (in shares)	25
Granted (in shares)	4
Exercised (in shares)	(4)
Options outstanding, Ending balance (in shares)	25	25
Stock Options, Weighted Average Exercise Price per Share
Weighted-average exercise price, Outstanding, Beginning of period (in dollars per share)	$ 136.87
Weighted-average exercise price, Granted (in dollars per share)	186.55
Weighted-average exercise price, Exercised (in dollars per share)	91.90
Weighted-average exercise price, Outstanding, End of period (in dollars per share)	$ 151.34	$ 136.87
Restricted Stock Units, Weighted Average Grant Date Fair Value per Share
Aggregate intrinsic values of options exercised	$ 382	$ 597	$ 319
Restricted Stock Units (RSUs)
Restricted Stock Units, Shares
Awards outstanding other than options, Beginning balance (in shares)	6
Granted (in shares)	1
Vested (in shares)	(1)
Awards outstanding other than options, Ending balance (in shares)	6	6
Restricted Stock Units, Weighted Average Grant Date Fair Value per Share
Weighted-average grant date fair value, Beginning of period (in dollars per share)	$ 168.68
Weighted-average grant-date fair value, Granted (in dollars per share)	185.44	$ 173.59	$ 172.59
Weighted-average grant date fair value, Vested (in dollars per share)	172.33
Weighted-average grant date fair value, Ending of period (in dollars per share)	171.83	168.68
Weighted-average grant-date fair value, Granted (in dollars per share)	$ 185.44	$ 173.59	$ 172.59
Total fair values of shares vested from RSU lapses	$ 126	$ 113	$ 106