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PARTNERS' CAPITAL - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 6 Months Ended | 26 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020 | May 31, 2018
Partners' capital |  |  |
Repurchase and retire authorization |  |  | $ 100
Treasury units retired | $ 0 |  |
Number of units retired |  | 5,460,639 |
Repurchase price (in dollars per unit) |  | $ 17.12 |
Simplification Transactions |  |  |
Partners' capital |  |  |
Number of units retired |  | 35 |

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