Investments - Equity Method and Joint Ventures Investments - Equity Method and Joint Ventures (Details) |
Sep. 30, 2016 |
|---|---|
| Rendezvous Gas Services, L.L.C. | |
| Equity Method Investment, Ownership Percentage | 78.00% |
| Three Rivers Gathering, L.L.C. | |
| Equity Method Investment, Ownership Percentage | 50.00% |
| Uintah Basin Field Services, L.L.C. | |
| Equity Method Investment, Ownership Percentage | 38.00% |