Equity Equity, ATM Program (Details) - 2015 ATM Program - USD ($) $ in Millions |
6 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Aug. 24, 2015 |
Aug. 06, 2015 |
Jun. 30, 2016 |
Sep. 30, 2016 |
|
| Supplemental prospectus, filing date | Aug. 24, 2015 | |||
| Registration Filing Date | Aug. 06, 2015 | |||
| Common Units Aggregate Value | $ 750 | |||
| Issuance of units | 1,492,367 | |||
| Equity offering, net of issuance costs | $ 38 | $ 72 |