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Equity and Distributions, Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  |  | $ 71.4 | $ 50.9
Other comprehensive income (loss) for period, before reclassifications |  |  | 112.6 | (19.5)
Reclassification of losses (gains) to net income during period |  |  | (331.1) | (42.1)
Total other comprehensive income (loss) for period | $ (269.4) | $ 83.3 | (218.5) | (61.6)
Accumulated Other Comprehensive Income (Loss), Ending balance | (147.1) | (10.7) | (147.1) | (10.7)
Interest expense | 320.2 | 290.1 | 637.7 | 567.3
Revenue | (5,751.0) | (8,276.3) | (13,233.5) | (16,819.8)
Operating costs and expenses | 4,370.4 | 6,800.9 | 10,430.7 | 13,820.6
Total | (1,060.8) | (1,236.5) | (2,435.8) | (2,516.9)
Cash Flow Hedges [Member] | Interest Rate Derivatives [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  |  | 13.9 | (104.8)
Other comprehensive income (loss) for period, before reclassifications |  |  | (284.2) | (5.2)
Reclassification of losses (gains) to net income during period |  |  | 33.2 | 18.4
Total other comprehensive income (loss) for period |  |  | (251.0) | 13.2
Accumulated Other Comprehensive Income (Loss), Ending balance | (237.1) | (91.6) | (237.1) | (91.6)
Cash Flow Hedges [Member] | Commodity Derivatives [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  |  | 55.1 | 152.7
Other comprehensive income (loss) for period, before reclassifications |  |  | 396.9 | (13.7)
Reclassification of losses (gains) to net income during period |  |  | (364.3) | (60.5)
Total other comprehensive income (loss) for period |  |  | 32.6 | (74.2)
Accumulated Other Comprehensive Income (Loss), Ending balance | 87.7 | 78.5 | 87.7 | 78.5
Other [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  |  | 2.4 | 3.0
Other comprehensive income (loss) for period, before reclassifications |  |  | (0.1) | (0.6)
Reclassification of losses (gains) to net income during period |  |  | 0.0 | 0.0
Total other comprehensive income (loss) for period |  |  | (0.1) | (0.6)
Accumulated Other Comprehensive Income (Loss), Ending balance | 2.3 | 2.4 | 2.3 | 2.4
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Total | (199.0) | 7.0 | (331.1) | (42.1)
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Cash Flow Hedges [Member] | Interest Rate Derivatives [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Interest expense | 9.7 | 9.2 | 33.2 | 18.4
Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] | Cash Flow Hedges [Member] | Commodity Derivatives [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Revenue | (209.8) | (2.5) | (364.2) | (67.8)
Operating costs and expenses | $ 1.1 | $ 0.3 | $ (0.1) | $ 7.3

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