Long-Term Incentive Plans - Summary of activity related to restricted stock awards (Details) shares in Millions	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Weighted-Average Grant Date Fair Value
Vested (in dollars of shares)	$ 198.10
Restricted stock awards and restricted stock units
Number of Shares/Units (In millions)
Beginning balance (in shares) | shares	2.6
Granted (in shares) | shares	0.8
Vested (in shares) | shares	(1.0)
Forfeited (in shares) | shares	(0.1)
Ending balance (in shares) | shares	2.3
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars of shares)	$ 571.19
Granted (in dollars of shares)	838.11
Vested (in dollars of shares)	458.49
Forfeited (in dollars of shares)	585.23
Ending balance (in dollars of shares)	$ 705.37