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Business Segments and Related Information (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Segment
Jun. 30, 2023
USD ($)
Business Segments [Abstract]        
Number of reportable segments | Segment     4  
Gross Operating Margin        
Operating income $ 1,765 $ 1,579 $ 3,587 $ 3,313
Adjustments to reconcile operating income to total segment gross operating margin (addition or subtraction indicated by sign):        
Depreciation, amortization and accretion expense in operating costs and expenses [1] 581 545 1,163 1,078
Asset impairment charges in operating costs and expenses 4 3 24 16
Net losses (gains) attributable to asset sales and related matters in operating costs and expenses 5 (2) 5 (4)
General and administrative costs 57 56 123 113
Non-refundable payments received from shippers attributable to make-up rights [2] 18 (3) 43 24
Subsequent recognition of revenues attributable to make-up rights [3] (3) (25) (11) (45)
Total segment gross operating margin $ 2,427 $ 2,153 $ 4,934 $ 4,495
[1] Excludes amortization of major maintenance costs for reaction-based plants, which are a component of gross operating margin.
[2] Since make-up rights entail a future performance obligation by the pipeline to the shipper, these receipts are recorded as deferred revenue for GAAP purposes; however, these receipts are included in gross operating margin in the period of receipt since they are nonrefundable to the shipper.
[3] As deferred revenues attributable to make-up rights are subsequently recognized as revenue under GAAP, gross operating margin must be adjusted to remove such amounts to prevent duplication since the associated non-refundable payments were previously included in gross operating margin.