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Partners' Capital and Distributions - Units Outstanding (Details) - shares | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
Series A Preferred Units |  |
Activity for preferred units and common units |  |
Outstanding, beginning of period (units) | 64,388,853 |
Outstanding, end of period (units) | 68,329,949 |
Series A Preferred Units | Limited Partners | Partners’ Capital Excluding Noncontrolling Interests |  |
Activity for preferred units and common units |  |
Outstanding, beginning of period (units) | 64,388,853 |
Sale of preferred units (units) |  | 61,030,127
Issuances of preferred units in connection with in-kind distributions (units) | 3,941,096 | 2,096,204
Outstanding, end of period (units) | 68,329,949 | 63,126,331
Common Units |  |
Activity for preferred units and common units |  |
Outstanding, beginning of period (units) | 669,194,419 |
Sales of common units (units) | 54,119,893 |
Outstanding, end of period (units) | 725,189,138 |
Common Units | Limited Partners | Partners’ Capital Excluding Noncontrolling Interests |  |
Activity for preferred units and common units |  |
Outstanding, beginning of period (units) | 669,194,419 | 397,727,624
Sales of common units (units) | 54,119,893 | 9,922,733
Issuance of common units in connection with acquisition of interest in Advantage Joint Venture (Note 6) (units) | 1,252,269 |
Issuances of common units under LTIP (units) | 622,557 | 457,289
Outstanding, end of period (units) | 725,189,138 | 408,107,646

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- Definition Number of units distributed for payment of a unit distribution to unit-holder of limited partnership (LP). + References Reference 1: 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 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 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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- Definition The number of limited partner units outstanding. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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- Definition Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners. + References Reference 1: 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 Reference 2: 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 + Details
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- Definition The number of units sold in a private placement of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: 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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