Long-Term Incentive - Rollforward of Outstanding RSUs and PSUs (Details) - RSUs and PSUs [Member] - $ / shares shares in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Outstanding as of January 1		0.7	0.8	1.0
Granted		0.3	0.3	0.3
Performance adjustment(a)	[1]	0.0	0.0	0.1
Vested and issued		(0.3)	(0.3)	(0.5)
Forfeited		0.0	(0.1)	(0.1)
Outstanding as of December 31		0.7	0.7	0.8
Vested pending issuance		0.1	0.1	0.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding as of January 1		$ 71.21	$ 59.25	$ 51.24
Granted		77.72	90.14	61.13
Performance adjustment(a)		0	0	57.88
Vested and issued		66.20	57.36	44.86
Forfeited		0	68.18	59.50
Outstanding as of December 31		76.36	71.21	59.25
Vested pending issuance		$ 63.88	$ 65.25	$ 57.88

[1] Represents an adjustment for performance results achieved related to outstanding PSU shares that vested during the period and are pending issuance.