Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Net Loss per Common Unit - Schedule of Net Loss per Unit and Allocation of Distribution (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income (loss) $ 47 $ (75)
Declared distributions 25 25
Amortization of beneficial conversion feature of Class B units 0  
Assumed allocation of undistributed net income (loss) $ 22 $ (100)
Weighted average units outstanding 57.1 57.1
Net loss per unit $ (0.80) $ (0.08)
Common Units [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income (loss) $ 14  
Declared distributions 24 $ 24
Amortization of beneficial conversion feature of Class B units (70)  
Assumed allocation of undistributed net income (loss) 0 (29)
Assumed allocation of net income (loss) $ (46) $ (5)
Weighted average units outstanding 57.1 57.1
Net loss per unit $ (0.80) $ (0.08)
Class B Units [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income (loss) $ 0  
Declared distributions 0 $ 0
Amortization of beneficial conversion feature of Class B units 235  
Assumed allocation of undistributed net income (loss) 0 0
Assumed allocation of net income (loss) $ 235 $ 0
Weighted average units outstanding 145.3 145.3
Subordinated Units [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income (loss) $ 32  
Declared distributions 0 $ 0
Amortization of beneficial conversion feature of Class B units (165)  
Assumed allocation of undistributed net income (loss) 22 (69)
Assumed allocation of net income (loss) $ (143) $ (69)
Weighted average units outstanding 135.4 135.4
Net loss per unit $ (1.06) $ (0.51)
General Partner [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income (loss) $ 1  
Declared distributions 1 $ 1
Amortization of beneficial conversion feature of Class B units 0  
Assumed allocation of undistributed net income (loss) 0 (2)
Assumed allocation of net income (loss) $ 1 $ (1)