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)

v3.10.0.1
Net Income (Loss) per Common Unit - Schedule of Net Income (Loss) per Unit and Allocation of Distribution (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income $ 307 $ 23 $ 923 $ 116
Declared distributions 297 217 859 267
Amortization of beneficial conversion feature of Class B units   0   0
Assumed allocation of undistributed net income $ 10 [1] $ (194) $ 64 [1] $ (151)
Weighted average units outstanding 348.6 247.2 348.6 121.2
Basic and diluted net income (loss) per unit $ 0.60 $ (1.10) $ 1.82 $ (4.12)
Common Units [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income     $ 651  
Declared distributions $ 202 $ 153 589 $ 202
Amortization of beneficial conversion feature of Class B units   (288)   (594)
Assumed allocation of undistributed net income 7 [1] (137) 45 [1] (107)
Assumed allocation of net income $ 209 $ (272) $ 634 $ (499)
Weighted average units outstanding 348.6 247.2 348.6 121.2
Basic and diluted net income (loss) per unit $ 0.60 [2] $ (1.10) [2] $ 1.82 $ (4.12) [2]
Class B Units [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Declared distributions $ 0 $ 0 $ 0 $ 0
Amortization of beneficial conversion feature of Class B units   974   2,004
Assumed allocation of undistributed net income 0 [1] 0 0 [1] 0
Assumed allocation of net income $ 0 $ 974 $ 0 $ 2,004
Weighted average units outstanding 0.0 50.6 0.0 113.4
Subordinated Units [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income     $ 253  
Declared distributions $ 79 $ 60 229 $ 60
Amortization of beneficial conversion feature of Class B units   (686)   (1,410)
Assumed allocation of undistributed net income 3 [1] (53) 18 [1] (41)
Assumed allocation of net income $ 82 $ (679) $ 247 $ (1,391)
Weighted average units outstanding 135.4 135.4 135.4 135.4
Basic and diluted net income (loss) per unit $ 0.60 [2] $ (5.02) [2] $ 1.82 $ (10.28) [2]
General Partner [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Net income     $ 19  
Declared distributions $ 5 $ 4 17 $ 5
Amortization of beneficial conversion feature of Class B units   0   0
Assumed allocation of undistributed net income 0 [1] (4) 1 [1] (3)
Assumed allocation of net income 5 0 18 2
IDR [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Declared distributions 11 0 24 0
Amortization of beneficial conversion feature of Class B units   0   0
Assumed allocation of undistributed net income 0 [1] 0 0 [1] 0
Assumed allocation of net income $ 11 $ 0 $ 24 $ 0
[1] Under our partnership agreement, the IDRs participate in net income (loss) only to the extent of the amount of cash distributions actually declared, thereby excluding the IDRs from participating in undistributed net income (loss).
[2] Earnings per unit in the table may not recalculate exactly due to rounding because it is calculated based on whole numbers, not the rounded numbers presented.