Equity Equity, ATM Program (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Aug. 24, 2015 |
Aug. 06, 2015 |
Sep. 30, 2016 |
Sep. 30, 2016 |
|
| Equity offering, net of issuance costs | $ 71 | |||
| 2015 ATM Program | ||||
| Supplemental prospectus, filing date | Aug. 24, 2015 | |||
| Registration Filing Date | Aug. 06, 2015 | |||
| Common Units Aggregate Value | $ 750 | |||
| Issuance of units | 655,940 | 1,492,637 | ||
| Equity offering, net of issuance costs | $ 31 | $ 72 |