Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Net Income per Common Unit - Schedule of Net Income per Unit and Allocation of Distribution (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 435 $ 385
Declared distributions 336 310
Assumed allocation of undistributed net income [1] $ 99 $ 75
Weighted average units outstanding 348.6 348.6
Basic and diluted net income per unit $ 0.84 $ 0.75
Common Units [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 307 $ 272
Declared distributions 223 210
Assumed allocation of undistributed net income [1] 70 52
Assumed allocation of net income $ 293 $ 262
Weighted average units outstanding 348.6 348.6
Basic and diluted net income per unit $ 0.84 $ 0.75
Subordinated Units [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 119 $ 105
Declared distributions 87 81
Assumed allocation of undistributed net income [1] 27 21
Assumed allocation of net income $ 114 $ 102
Weighted average units outstanding 135.4 135.4
Basic and diluted net income per unit $ 0.84 $ 0.75
General Partner [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 9 $ 8
Declared distributions 6 6
Assumed allocation of undistributed net income [1] 2 2
Assumed allocation of net income 8 8
IDR [Member]    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Declared distributions 20 13
Assumed allocation of undistributed net income [1] 0 0
Assumed allocation of net income $ 20 $ 13
[1]
Under our partnership agreement, the IDRs participate in net income only to the extent of the amount of cash distributions actually declared, thereby excluding the IDRs from participating in undistributed net income.