Unit-Based Compensation - Schedule of Unit Grants Outstanding (Details) - Phantom Share Units (PSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Phantom Common Units
Beginning balance (in units)	2,124,012	1,777,301
Units granted (in units)	655,630	1,072,600
Units vested (in units)	477,256	414,472
Units forfeited (in units)	189,064	311,417
Ending balance (in units)	2,113,322	2,124,012
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per unit)	$ 29.15	$ 31.89
Units granted (in dollars per unit)	30.70	27.67
Units vested (in dollars per unit)	30.04	32.92
Units forfeited (in dollars per unit)	28.16	31.26
Ending balance (in dollars per unit)	$ 29.21	$ 29.15