Consolidated Balance Sheets (Parenthetical) - shares
|
Sep. 30, 2016 |
Dec. 31, 2015 |
| Equity: |
|
|
| Limited partners' capital account, units outstanding (in shares) |
95,339,786
|
87,365,706
|
| Common Units - Public [Member] |
|
|
| Equity: |
|
|
| Limited partners' capital account, units issued (in shares) |
49,588,960
|
49,588,960
|
| Limited partners' capital account, units outstanding (in shares) |
49,588,960
|
49,588,960
|
| Common Units - Affiliated [Member] |
|
|
| Equity: |
|
|
| Limited partners' capital account, units issued (in shares) |
45,750,826
|
37,776,746
|
| Limited partners' capital account, units outstanding (in shares) |
45,750,826
|
37,776,746
|
| Class A Units - Held by Subsidiary [Member] |
|
|
| Equity: |
|
|
| Limited partners' capital account, units issued (in shares) |
0
|
11,018,744
|
| Limited partners' capital account, units outstanding (in shares) |
0
|
11,018,744
|
| Class C Units - Held by Subsidiary [Member] |
|
|
| Equity: |
|
|
| Limited partners' capital account, units issued (in shares) |
16,410,780
|
0
|
| Limited partners' capital account, units outstanding (in shares) |
16,410,780
|
0
|