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Related Party Agreements and Transactions (Tables) | 6 Months Ended
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Jun. 30, 2017
Related Party Transactions [Abstract] |
Schedule of Sales to Related Parties | Sales to related parties were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Service revenues |  |  |  |  |  |  |
MPC | $ | 270 |  |  | $ | 246 |  |  | $ | 525 |  |  | $ | 423 |
Rental income |  |  |  |  |  |  |
MPC | $ | 70 |  |  | $ | 66 |  |  | $ | 137 |  |  | $ | 104 |
Product sales(1) |  |  |  |  |  |  |
MPC | $ | 2 |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 6 |
Summary of Fees Received from Related Parties Included in Other Income - Related Parties | The revenue received from related parties, included in Other income-related parties on the Consolidated Statements of Income, was as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2017 |  | 2016 |  | 2017 |  | 2016
MPC | $ | 10 |  |  | $ | 12 |  |  | $ | 21 |  |  | $ | 26 |
MarkWest Utica EMG | 4 |  |  | 5 |  |  | 8 |  |  | 7 |
Ohio Gathering | 4 |  |  | 3 |  |  | 8 |  |  | 7 |
Other | 7 |  |  | 4 |  |  | 10 |  |  | 5 |
Total | $ | 25 |  |  | $ | 24 |  |  | $ | 47 |  |  | $ | 45 |
Summary of Charges for Services from Related Parties | Charges for services included in General and administrative expenses primarily relate to services that support the Partnership’s executive management, accounting and human resources activities. These charges were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Purchases - related parties | $ | 18 |  |  | $ | 11 |  |  | $ | 33 |  |  | $ | 18 |
General and administrative expenses | 11 |  |  | 12 |  |  | 19 |  |  | 22 |
Total | $ | 29 |  |  | $ | 23 |  |  | $ | 52 |  |  | $ | 40 |
Summary of Related Party Costs Added to Property, Plant and Equipment | These costs added to Property, plant and equipment were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2017 |  | 2016 |  | 2017 |  | 2016
MPC | $ | 12 |  |  | $ | 12 |  |  | $ | 22 |  |  | $ | 22 |
Schedule of Employee Services Expenses from Related Parties | Employee services expenses from related parties were as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Purchases - related parties | $ | 91 |  |  | $ | 88 |  |  | $ | 183 |  |  | $ | 159 |
General and administrative expenses | 24 |  |  | 27 |  |  | 49 |  |  | 48 |
Total | $ | 115 |  |  | $ | 115 |  |  | $ | 232 |  |  | $ | 207 |
Schedule of Receivables from Related Parties | Receivables from related parties, which include reimbursements from the MarkWest Merger to be provided by MPC for the conversion of Class B units, were as follows:
(In millions) | June 30, 2017 |  | December 31, 2016
MPC | $ | 167 |  |  | $ | 242 |
MarkWest Utica EMG | 1 |  |  | 2 |
Ohio Gathering | 2 |  |  | 2 |
Other | 3 |  |  | 1 |
Total | $ | 173 |  |  | $ | 247 |
Schedule of Long Term Receivables with Related Parties | Long-term receivables with related parties, which includes straight-line rental income, were as follows:
(In millions) | June 30, 2017 |  | December 31, 2016
MPC | $ | 16 |  |  | $ | 11 |
Schedule of Payables to Related Parties | Payables to related parties were as follows:
(In millions) | June 30, 2017 |  | December 31, 2016
MPC | $ | 74 |  |  | $ | 63 |
MarkWest Utica EMG | 15 |  |  | 24 |
Other | 4 |  |  | — |
Total | $ | 93 |  |  | $ | 87 |
Summary of Deferred Revenue - Related Parties | The Deferred revenue-related parties balance associated with the minimum volume deficiencies and project reimbursements were as follows:
(In millions) | June 30, 2017 |  | December 31, 2016
Minimum volume deficiencies - MPC | $ | 51 |  |  | $ | 48 |
Project reimbursements - MPC | 21 |  |  | 9 |
Total | $ | 72 |  |  | $ | 57 |

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