Long-Term Incentive Plan (Vested Unit Awards) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement [Abstract]
Vested Common Units (in shares)	334,656	316,336	235,127
Fair Value of Unit Awards on Vesting Date	$ 20.2	$ 19.3	$ 15.2
Intrinsic Value of Unit Awards on Vesting Date	$ 16.8	$ 14.7	$ 10.0