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Revenues, Remaining Performance Obligations (Details) - Midstream Services [Member] $ in Millions | Dec. 31, 2018 USD ($)
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Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 20,592.9
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 3,530.6
Expected timing of satisfaction, period | 1 year
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 3,187.3
Expected timing of satisfaction, period | 1 year
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 2,641.4
Expected timing of satisfaction, period | 1 year
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 2,145.0
Expected timing of satisfaction, period | 1 year
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 1,798.7
Expected timing of satisfaction, period | 1 year
Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 |
Remaining Performance Obligation to be Recognized in the Future [Abstract] |
Remaining performance obligation | $ 7,289.9
Expected timing of satisfaction, period |

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