Consolidated Balance Sheets (Parenthetical) - shares |
Sep. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Units outstanding | 1,639,525 | |
| Limited Partners Common Units [Member] | Public [Member] | ||
| Units issued | 23,400,000 | 23,400,000 |
| Units outstanding | 23,400,000 | 23,400,000 |
| MPC [Member] | Limited Partners Common Units [Member] | ||
| Units issued | 57,000,000 | 20,000,000 |
| Units outstanding | 57,000,000 | 20,000,000 |
| MPC [Member] | Limited Partners Subordinated Units [Member] | ||
| Units issued | 0 | 37,000,000 |
| Units outstanding | 0 | 37,000,000 |
| MPC [Member] | General Partner [Member] | ||
| Units issued | 1,600,000 | 1,600,000 |
| Units outstanding | 1,600,000 | 1,600,000 |