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Net Income per Unit (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended
--- | --- | ---
Feb. 14, 2018 | Mar. 31, 2018 | Mar. 31, 2017
Earnings Per Share Basic [Line Items] |  |  |
Income (loss) from continuing operations |  | $ (78) | $ 12
Distribution to preferred units |  | (2) |
Net income (loss) and comprehensive income (loss) |  | (315) | 1
Incentive distribution rights | $ 21 | 18 | 21
Distributions on nonvested phantom unit awards |  | 1 | 2
Loss from discontinued operations, net of income taxes |  | $ (237) | $ (11)
Weighted average limited partner units outstanding: |  |  |
Income (Loss) from Continuing Operations, Net of Tax, Per Outstanding Limited Partnership Unit, Diluted |  | $ (1.11) | $ (0.11)
Income (Loss) from Discontinued Operations, Net of Tax, Per Outstanding Limited Partnership Unit, Diluted |  | $ (2.63) | $ (0.11)
Common Units [Member] |  |  |
Earnings Per Share Basic [Line Items] |  |  |
Income from continuing operations allocated to limited partners |  | $ (99) | $ (11)
Weighted average limited partner units outstanding: |  |  |
Common - basic (in shares) |  | 89,753,950 | 98,609,608
Common - equivalents (in shares) |  | 517,801 | 106,350
Common - diluted (in shares) |  | 90,271,751 | 98,715,958
Income (Loss) from Continuing Operations, Per Outstanding Limited Partnership Unit, Basic, Net of Tax |  | $ (1.11) | $ (0.11)
Income (Loss) from Discontinued Operations, Net of Tax, Per Outstanding Limited Partnership Unit, Basic |  | $ (2.63) | $ (0.11)
Series A Preferred Units [Member] |  |  |
Earnings Per Share Basic [Line Items] |  |  |
Distribution to preferred units |  | $ 2 | $ 0

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- Definition Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared and applicable to holders of share-based compensation, for example, but not limited to, non-vested shares, stock options, or restricted stock units. + References No definition available. + Details
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