Acquisitions and Investments - Formation of Gathering and Processing Joint Venture (Details)
bbl / d in Thousands, $ in Millions |
|
3 Months Ended |
|
Jan. 01, 2017
USD ($)
bbl / d
|
Mar. 31, 2018
USD ($)
|
Mar. 31, 2017
USD ($)
|
[1] |
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Contribution of assets to joint venture |
|
$ 0
|
$ 328
|
| Sherwood Midstream |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Equity method investments, ownership percentage |
|
50.00%
|
|
| Sherwood Midstream | MPLX LP |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Contribution of assets to joint venture |
$ 134
|
|
|
| Payments to acquire interest in joint venture |
20
|
|
|
| Sherwood Midstream | Antero Midstream Partners L.P. |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Payments to acquire interest in joint venture |
$ 154
|
|
|
| Ohio Fractionation |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Capacity | bbl / d |
20
|
|
|
| Ohio Fractionation | Sherwood Midstream |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Payments to acquire interest in joint venture |
$ 126
|
|
|
| Sherwood Midstream Holdings |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Equity method investments, ownership percentage |
|
81.00%
|
|
| Ownership interest In assets sold by company in affiliate |
|
6.00%
|
|
| Proceeds from sale of ownership interest in assets sold by company in affiliate |
|
$ 15
|
|
| Sherwood Midstream Holdings | Direct Ownership Interest |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Equity method investments, ownership percentage |
79.00%
|
|
|
| Sherwood Midstream Holdings | Indirect Ownership Interest |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Equity method investments, ownership percentage |
10.50%
|
|
|
| Sherwood Midstream Holdings | MPLX LP |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Contribution of assets to joint venture |
$ 203
|
|
|
| Fair value of assets contributed |
209
|
|
|
| Gain on disposal of assets |
$ 2
|
|
|
| Sherwood Midstream Holdings | Sherwood Midstream |
|
|
|
| Schedule of Equity Method Investments [Line Items] |
|
|
|
| Equity method investments, ownership percentage |
21.00%
|
|
|
| Payments to acquire interest in joint venture |
$ 44
|
|
|
|
|