Partners' Capital and Distributions - Activity for Series A Preferred Units and Common Units (Details) - shares		12 Months Ended			22 Months Ended
	Jan. 28, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 14, 2016
Partners Capital and Distribution [Line Items]
Limited partner interest					98.00%
General partner ownership interest					2.00%
Series A Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		69,696,542
Sale of Series A preferred units (in units)	61,000,000
Balance, end of period (in units)		71,090,468	69,696,542
Series B Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		800,000
Balance, end of period (in units)		800,000	800,000
Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		725,189,138
Sale of common units (in units)			54,119,893
Balance, end of period (in units)		726,361,924	725,189,138
Partners’ Capital Excluding Noncontrolling Interests | Limited Partners | Series A Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		69,696,542	64,388,853	0
Sale of Series A preferred units (in units)				61,030,127
Issuances of Series A preferred units in connection with in-kind distributions (in units)		1,393,926	5,307,689	3,358,726
Balance, end of period (in units)		71,090,468	69,696,542	64,388,853
Partners’ Capital Excluding Noncontrolling Interests | Limited Partners | Series B Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		800,000	0	0
Sale of Series B preferred units (in units)			800,000
Balance, end of period (in units)		800,000	800,000	0
Partners’ Capital Excluding Noncontrolling Interests | Limited Partners | Common Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance, beginning of period (in units)		725,189,138	669,194,419	397,727,624
Issuance of common units upon AAP Management Units becoming earned (in units)		559,649
Sale of common units (in units)			54,119,893	26,278,288
Issuance of common units in connection with acquisition of interest in Advantage Joint Venture (Note 6) (in units)			1,252,269
Issuance of common units in connection with Simplification Transactions (in units)				244,707,926
Issuance of common units under LTIP (in units)		613,137	622,557	480,581
Balance, end of period (in units)		726,361,924	725,189,138	669,194,419