Incentive Plans Including Share-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity Instruments Other than Options Activity [Roll Forward]
Balance at January 1 (in shares)	695
Granted (in shares)	395	421	411
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)	(96)
Vested (in shares)	(319)	(392)	(442)
Dividend equivalents (in shares)	33
Balance at December 31 (in shares)	708	695
Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract]
Balance at January 1, weighted average grant date fair value (in dollars per share)	$ 64.59
Granted, weighted average grant date fair value (in dollars per share)	68.43	$ 66.03	$ 62.92
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value (in dollars per share)	$ 65.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 22	$ 27	$ 29
Vested, weighted average grant date fair value (in dollars per share)	$ 63.03
Dividend equivalents, weighted average grant date fair value (in dollars per share)	65.40
Balance at December 31, weighted average grant date fair value (in dollars per share)	$ 67.35	$ 64.59
Service-based awards [Member]
Equity Instruments Other than Options Activity [Roll Forward]
Granted (in shares)	200