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Equity and Distributions, Distributions (Details) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Distributions to Partners [Abstract] |  |  |
Number of Designated Units excluded from distributions (in units) |  |  | 35,380,000
Second Quarter 2015 Distribution [Member] |  |  |
Distributions to Partners [Abstract] |  |  |
Distribution Per Common Unit (in dollars per unit) |  | $ 0.3800 |
Record Date |  | Jul. 31, 2015 |
Payment Date |  | Aug. 07, 2015 |
Second Quarter 2016 Distribution [Member] |  |  |
Distributions to Partners [Abstract] |  |  |
Distribution Per Common Unit (in dollars per unit) | $ 0.4000 |  |
Record Date | Jul. 29, 2016 |  |
Payment Date | Aug. 05, 2016 |  |
Cash Distribution [Member] | First Quarter 2015 Distribution [Member] |  |  |
Distributions to Partners [Abstract] |  |  |
Distribution Per Common Unit (in dollars per unit) |  | $ 0.3750 |
Record Date |  | Apr. 30, 2015 |
Payment Date |  | May 07, 2015 |
Cash Distribution [Member] | First Quarter 2016 Distribution [Member] |  |  |
Distributions to Partners [Abstract] |  |  |
Distribution Per Common Unit (in dollars per unit) | $ 0.3950 |  |
Record Date | Apr. 29, 2016 |  |
Payment Date | May 06, 2016 |  |

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- Definition The number of common units outstanding (the Designated Units) on which a private held affiliate agreed to temporarily waive regular quarterly cash distributions it would otherwise receive, for a five-year period after the merger beginning November 22, 2010. + References No definition available. + Details
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