Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) per Common Unit - Schedule of Net Income (Loss) per Unit and Allocation of Distribution (Details)

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Net Income (Loss) per Common Unit - Schedule of Net Income (Loss) per Unit and Allocation of Distribution (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net loss $ (43,240) $ (98,109) $ (339,197) $ (196,851)
Declared distributions 24,754 24,754 74,261 74,261
Assumed allocation of undistributed net income (loss) (67,994) (122,863) (413,458) (271,112)
Weighted average units outstanding 57,079 57,079 57,079 53,277
Net income (loss) per unit $ 0.08 $ (0.20) $ (0.83) $ (0.01)
Net income (loss) attributable to the Creole Trail Pipeline Business 0 244 0 (18,150)
Creole Trail Pipeline Business [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income (loss) attributable to the Creole Trail Pipeline Business 0 244 0 (18,150)
Common Units [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net loss     (98,584)  
Declared distributions 24,259 24,259 72,776 72,776
Assumed allocation of undistributed net income (loss) (19,762) (35,780) (120,168) (73,521)
Assumed allocation of net income (loss) 4,497 (11,521) (47,392) (745)
Weighted average units outstanding 57,079 57,079 57,079 53,277
Common Units [Member] | Creole Trail Pipeline Business [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business   (6,020)   (6,020)
Net loss per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business   $ (0.11)   $ (0.11)
Class B Units [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net loss     0  
Declared distributions 0 0 0 0
Assumed allocation of undistributed net income (loss) 0 0 0 0
Assumed allocation of net income (loss) 0 0 0 0
Weighted average units outstanding 145,333 0 145,333 0
Net income (loss) per unit $ 0.00 $ 0.00 $ 0.00 $ 0.00
Class B Units [Member] | Creole Trail Pipeline Business [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business   0   0
Net loss per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business   $ 0.00   $ 0.00
Subordinated Units [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net loss     (233,829)  
Declared distributions 0 0 0 0
Assumed allocation of undistributed net income (loss) (46,872) (84,865) (285,021) (174,382)
Assumed allocation of net income (loss) (46,872) (84,865) (285,021) (174,382)
Weighted average units outstanding 135,384 135,384 135,384 135,384
Net income (loss) per unit $ (0.35) $ (0.63) $ (2.11) $ (1.29)
Subordinated Units [Member] | Creole Trail Pipeline Business [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business   (186,894)   (186,894)
Net loss per unit, adjusted to include pre-acquisition date net losses of the Creole Trail Pipeline Business   $ (1.38)   $ (1.38)
General Partner [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net loss     (6,784)  
Declared distributions 495 495 1,485 1,485
Assumed allocation of undistributed net income (loss) (1,360) (2,462) (8,269) (5,059)
Assumed allocation of net income (loss) (865) (1,967) (6,784) (3,574)
General Partner [Member] | Creole Trail Pipeline Business [Member]
        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Assumed allocation of net loss adjusted for the Creole Trail Pipeline Business   $ (3,937)   $ (3,937)