Long-Term Incentive Plan (Cash Flow Effects of LTIP Settlements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement [Abstract]
Number of Common Units Issued, Net of Tax Withholdings (in shares)	200,949	150,435	275,093
Tax Withholdings and Other Cash Payments	$ 8.9	$ 6.2	$ 14.7
Employer Taxes	0.8	0.7	1.3
Total Cash Payments	$ 9.7	$ 6.9	$ 16.0