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Cash Distributions and Net Income (Loss) per Common Unit - Schedule of Partner Distributions Made (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Sep. 30, 2012
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Dec. 31, 2012
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Jun. 30, 2013
Common Units
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Mar. 31, 2013
Common Units
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Dec. 31, 2012
Common Units
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Sep. 30, 2013
Common Units
|
May 28, 2013
Class B Unit [Member]
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Sep. 30, 2012
Class B Unit [Member]
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May 31, 2012
Class B Unit [Member]
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Jun. 30, 2013
Class B Unit [Member]
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Mar. 31, 2013
Class B Unit [Member]
|
Dec. 31, 2012
Class B Unit [Member]
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Sep. 30, 2013
Class B Unit [Member]
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Jun. 30, 2013
Subordinated Units
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Mar. 31, 2013
Subordinated Units
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Dec. 31, 2012
Subordinated Units
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Jun. 30, 2013
General Partner [Member]
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Mar. 31, 2013
General Partner [Member]
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Dec. 31, 2012
General Partner [Member]
|
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| Distribution Made to Member or Limited Partner [Line Items] | |||||||||||||||||||||||
| Number of days after quarter end distribution is paid | $ 45 | ||||||||||||||||||||||
| Date paid | Aug. 15, 2013 | May 15, 2013 | Feb. 14, 2013 | ||||||||||||||||||||
| Distribution Made to Member or Limited Partner, Distributions Paid, Per Unit | $ 0.425 | $ 0.425 | $ 0.425 | $ 0.425 | $ 0.000 | $ 0.000 | $ 0.000 | ||||||||||||||||
| Total distribution | 24,259,000 | 24,259,000 | 16,783,000 | 0 | 0 | 0 | 0 | 0 | 0 | 495,000 | 495,000 | 342,000 | |||||||||||
| Partner units issued and sold | 12.0 | 133.3 | |||||||||||||||||||||
| Partner units issued and sold, unit price ($US$ per unit) | $ 15.0 | $ 15.00 | |||||||||||||||||||||
| Proceeds from sale of partnership units | 2,000,000,000 | ||||||||||||||||||||||
| Discount upon issuance of Class B units representating beneficial conversion feature | 2,130,000,000 | ||||||||||||||||||||||
| Amortization of Beneficial Conversion Feature of Class B Units | $ 0 | $ 0 | |||||||||||||||||||||