Earnings Per Share (Policies)	3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]
Net Income Per Unit	The two-class method was based on the weighted-average number of common units outstanding during the period. Basic net income per unit applicable to limited partners was computed by dividing limited partners’ interest in net income, after deducting our general partner’s 2% interest and IDRs, by the weighted-average number of outstanding common units. Our net income was allocated to our general partner and limited partners in accordance with their respective partnership percentages after giving effect to priority income allocations for IDRs, which were held by our general partner pursuant to our Prior Partnership Agreement. Earnings in excess of distributions were allocated to our general partner and limited partners based on their respective ownership interests. The IDRs were paid following the close of each quarter.As discussed in Note 3 - Related Party Transactions, pursuant to Amendment No. 2 to the Prior Partnership Agreement, an agreement was reached for a waiver of distributions in respect of the IDRs for the GP Additional Units associated with the 5.0 million Additional Units issued in connection with the Big Spring Gathering Assets Acquisition for at least two years, through at least the distribution for the quarter ending March 31, 2022. The IDR Waiver essentially reduced the distribution made to the holders of the IDRs during this period, as the holders would not receive a share of the distribution made on the GP Additional Units. An additional waiver letter was signed that waived all of the distributions for the first quarter of 2020 on the Additional Units with respect to base distributions and the IDRs. Refer to Note 3 for additional details. Subsequently, the IDRs were eliminated in the IDR Restructuring Transaction on August 13, 2020.

Earnings Per Share (Policies)

3 Months Ended

Mar. 31, 2021

The two-class method was based on the weighted-average number of common units outstanding during the period. Basic net income per unit applicable to limited partners was computed by dividing limited partners’ interest in net income, after deducting our general partner’s 2% interest and IDRs, by the weighted-average number of outstanding common units. Our net income was allocated to our general partner and limited partners in accordance with their respective partnership percentages after giving effect to priority income allocations for IDRs, which were held by our general partner pursuant to our Prior Partnership Agreement. Earnings in excess of distributions were allocated to our general partner and limited partners based on their respective ownership interests. The IDRs were paid following the close of each quarter.As discussed in Note 3 - Related Party Transactions, pursuant to Amendment No. 2 to the Prior Partnership Agreement, an agreement was reached for a waiver of distributions in respect of the IDRs for the GP Additional Units associated with the 5.0 million Additional Units issued in connection with the Big Spring Gathering Assets Acquisition for at least two years, through at least the distribution for the quarter ending March 31, 2022. The IDR Waiver essentially reduced the distribution made to the holders of the IDRs during this period, as the holders would not receive a share of the distribution made on the GP Additional Units. An additional waiver letter was signed that waived all of the distributions for the first quarter of 2020 on the Additional Units with respect to base distributions and the IDRs. Refer to Note 3 for additional details. Subsequently, the IDRs were eliminated in the IDR Restructuring Transaction on August 13, 2020.