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Equity and Distributions, Distributions (Details) - Cash Distribution [Member] - $ / shares | 6 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016
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
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
First Quarter 2017 Distribution [Member] |  |
Distributions to Partners [Abstract] |  |
Distribution Per Common Unit (in dollars per unit) | $ 0.4150 |
Record Date | Apr. 28, 2017 |
Payment Date | May 08, 2017 |
Second Quarter 2017 Distribution [Member] |  |
Distributions to Partners [Abstract] |  |
Distribution Per Common Unit (in dollars per unit) | $ 0.4200 |
Record Date | Jul. 31, 2017 |
Payment Date | Aug. 07, 2017 |

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- Definition Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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