v3.8.0.1

Equity Equity, ATM Program (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Aug. 22, 2017 | Aug. 21, 2015 | Sep. 30, 2017 | Sep. 30, 2017
Partners' Capital Account, Public Sale of Units Net of Offering Costs |  |  |  | $ 3
2017 ATM Program [Member] |  |  |  |
Equity Instrument Regulatory Filing Date | Aug. 22, 2017 |  |  |
Registration Filing Date |  | Aug. 21, 2015 |  |
Common Units Aggregate Value | $ 750 |  |  |
Partners' Capital Account, Units, Sale of Units |  |  | 72,857 | 72,857
Partners' Capital Account, Public Sale of Units Net of Offering Costs |  |  | $ 3 | $ 3

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