Equity, Cash Distributions (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Distribution Made to Member or Limited Partner | |||||||||||||||||
| Loss attributable to Predecessors | $ 0.0 | $ 16.0 | [1] | $ 8.0 | $ 0.0 | $ 24.0 | [1] | ||||||||||
| Distributions to preferred unitholders | 21.0 | 8.0 | [2] | ||||||||||||||
| Distribution to Partner, Waived Distribution | $ 0.0 | $ 12.5 | $ 15.0 | 15.0 | 12.5 | 30.0 | |||||||||||
| Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ 1.03 | $ 1.03 | |||||||||||||||
| Distributions to common unitholders | $ 240.0 | [3] | $ 238.0 | [3] | $ 480.0 | $ 411.0 | [2] | ||||||||||
| Distribution Made to Limited Partner, Distribution Date | May 15, 2019 | Feb. 14, 2019 | |||||||||||||||
| Distribution Made to Limited Partner, Date of Record | May 09, 2019 | Feb. 05, 2019 | |||||||||||||||
| Common | |||||||||||||||||
| Distribution Made to Member or Limited Partner | |||||||||||||||||
| Loss attributable to Predecessors | $ 0.0 | $ 0.0 | |||||||||||||||
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