Quarterly report pursuant to Section 13 or 15(d)

Net Income per Common Unit (Details)

v3.21.2
Net Income per Common Unit (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jul. 27, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Net Income   $ 395 $ 347 $ 406 $ 435 $ 742 $ 841
Declared distributions   361   341   716 678
Assumed allocation of undistributed net income (loss) [1]   $ 34   $ 65   $ 26 $ 163
Weighted average units outstanding   484.0   348.6   484.0 348.6
Basic and diluted net income per unit   $ 0.73   $ 0.78   $ 1.38 $ 1.62
Common Units [Member]              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Net Income   $ 387 340 $ 287 307    
Declared distributions   322   225   $ 641 $ 448
Assumed allocation of undistributed net income (loss) [1]   33   46   25 115
Assumed allocation of net income   $ 355   $ 271   $ 666 $ 563
Weighted average units outstanding   484.0   348.6   484.0 348.6
Basic and diluted net income per unit   $ 0.73   $ 0.78   $ 1.38 $ 1.62
Common Units [Member] | Subsequent Event [Member]              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Distribution Made to Limited Partner, Distributions Declared, Per Unit $ 0.665            
Subordinated Units [Member]              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Net Income   $ 0 0 $ 111 119    
Declared distributions   0   87   $ 0 $ 174
Assumed allocation of undistributed net income (loss) [1]   0   18   0 45
Assumed allocation of net income   $ 0   $ 105   $ 0 $ 219
Weighted average units outstanding   0.0   135.4   0.0 135.4
Basic and diluted net income per unit   $ 0   $ 0.78   $ 0 $ 1.62
General Partner [Member]              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Net Income   $ 8 $ 7 $ 8 $ 9    
Declared distributions   7   7   $ 14 $ 14
Assumed allocation of undistributed net income (loss) [1]   1   1   1 3
Assumed allocation of net income   8   8   15 17
IDR [Member]              
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]              
Declared distributions   32   22   61 42
Assumed allocation of undistributed net income (loss) [1]   0   0   0 0
Assumed allocation of net income   $ 32   $ 22   $ 61 $ 42
[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.