Incentive Plans - Schedule of Restricted Stock Awards Activity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity Awards (a)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Awards awarded: Weighted average grant-date fair value (usd per share)	$ 231.16	$ 223.05	$ 141.82
Grant date fair value of equity instruments other than options, vested in period	$ 59	$ 62	$ 50
Total fair value of equity instruments other than options, vested in period	79	109	51
Liability Awards vested: Cash paid	79	109	51
Liability Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of equity instruments other than options, vested in period	15	24	14
Liability Awards vested: Cash paid	$ 15	$ 24	$ 14