Equity, Cash Distributions (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Oct. 18, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
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| Distribution Made to Member or Limited Partner | ||||||||||
| Quarterly Distribution Per Unit | $ 0.9852 | [1],[2] | $ 0.9710 | $ 0.9400 | $ 0.9100 | |||||
| Total Cash Distribution including general partner IDRs (in millions) | $ 201 | $ 147 | $ 140 | $ 140 | ||||||
| Date of Distribution | Nov. 14, 2017 | Aug. 14, 2017 | May 15, 2017 | Feb. 14, 2017 | ||||||
| Unitholders Record Date | Nov. 03, 2017 | Aug. 04, 2017 | May 05, 2017 | Feb. 03, 2017 | ||||||
| Subsequent Event | ||||||||||
| Distribution Made to Member or Limited Partner | ||||||||||
| Distribution Made to Limited Partner, Declaration Date | Oct. 18, 2017 | |||||||||
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