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Partners' Capital and Distributions - Preferred Unit Offering (Details) - Series A Preferred Units - Limited Partners shares in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jan. 31, 2016 $ / shares shares | Mar. 31, 2016 item $ / shares
Partners Capital and Distributions |  |
Sale of Series A preferred units (in units) | shares | 61.0 |
Cash purchase price (in dollars per unit) | $ 26.25 |
Annual rate of distributions (as a percent) |  | 8.00%
Annualized distribution rate (in dollars per unit) |  | $ 2.10
Distribution percentage for general partner interest |  | 2.00%
Preferred unit conversion ratio |  | 1
Common unit closing price as a percentage of Issue Price, over which the entity has conversion option |  | 150.00%
Period for closing price of common units to be above threshold, to trigger conversion option |  | 20 days
Preferred Distribution Rate Reset Option |  |
Partners Capital and Distributions |  |
Period after fifth and subsequent anniversaries of issuance for distribution rate reset election option |  | 30 days
Number of distribution rate reset elections allowed | item |  | 1
Basis spread on variable rate (as a percent) |  | 5.85%
Period after sixth anniversary of issuance, after which units may be redeemed if distribution rate has been reset |  | 30 days
Value of common units if exchanged for redemption of preferred units, as a percentage of volume-weighted average price |  | 95.00%
Redemption price as a percentage of Issue Price |  | 110.00%

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- Definition Price per unit of partnership interest sold during the period. + References No definition available. + Details
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- Definition The percentage of the volume-weighted average price of the partnership's common units for a specified trading period, at which such common units are valued if given in exchange for the redemption of the preferred units. + References No definition available. + Details
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- Definition The annualized distributions per unit to which holders of the preferred units are entitled. + References No definition available. + Details
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- Definition Ratio applied to the conversion of preferred units into common units. + References No definition available. + Details
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- Definition Threshold period of specified consecutive trading days for which the closing price of the partnership's common units must be above a specified level to trigger the conversion option by the entity. + References No definition available. + Details
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- Definition The closing price of the partnership's common units as a percentage of the Issue Price of the preferred units that must be exceeded for a certain period of days in order for the entity to convert the preferred units, subject to minimum time requirements and certain minimum conversion amounts. + References No definition available. + Details
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- Definition The percentage points to be added to the applicable rate of the ten-year U.S. Treasury to calculate the new distribution rate on the preferred units if the holders elect to reset the distribution rate. + References No definition available. + Details
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- Definition The number of times the holders of the preferred units may elect to reset the preferred unit distribution rate. + References No definition available. + Details
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- Definition Period following the fifth and each subsequent anniversary of the issuance date of the preferred units, within which the holders of the preferred units may elect to reset the preferred unit distribution rate. + References No definition available. + Details
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- Definition Period following the sixth anniversary of the issuance date of the preferred units, after which the entity may choose to redeem all or a portion of the outstanding preferred units, if the holders of the preferred units have exercised a distribution rate reset. + References No definition available. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 16 -Subparagraph a, b -Article 6 + Details
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