Quarterly report [Sections 13 or 15(d)]

Net Income per Common Unit (Details)

v3.25.3
Net Income per Common Unit (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Oct. 28, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                  
Net Income   $ 506 $ 553 $ 641 $ 635 $ 570 $ 682 $ 1,700 $ 1,887
Declared distributions [1]   520     501     1,542 1,503
Assumed allocation of undistributed net income [2]   $ (14)     $ 134     $ 158 $ 384
Weighted average units outstanding   484.0     484.0     484.0 484.0
Basic and diluted net income per unit [3]   $ 0.80     $ 1.08     $ 2.79 $ 3.21
Common Units [Member]                  
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                  
Net Income   $ 496 542 628 $ 622 559 668    
Declared distributions [1]   402     392     $ 1,196 $ 1,176
Assumed allocation of undistributed net income [2]   (14)     132     155 376
Assumed allocation of net income   388     524     1,351 1,552
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 $ 0.830                
Common Units [Member] | Base Amount [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 0.775                
Common Units [Member] | Variable Amount [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 $ 0.055                
General Partner [Member]                  
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                  
Net Income   10 $ 11 $ 13 13 $ 11 $ 14    
Declared distributions [1]   10     10     31 30
Assumed allocation of undistributed net income [2]   0     3     3 8
Assumed allocation of net income   10     13     34 38
IDR [Member]                  
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                  
Declared distributions [1]   108     99     315 297
Assumed allocation of undistributed net income [2]   0     0     0 0
Assumed allocation of net income   $ 108     $ 99     $ 315 $ 297
[1] Represents distributions declared with respect to earnings of the respective period.
[2] 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 (loss).
[3] In computing basic and diluted net income per common unit, net income is reduced by the amount of undistributed net income allocated to participating securities other than common units, as required under the two-class method. See Note 11—Net Income per Common Unit.