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Business Segments and Related Information (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Segment
Sep. 30, 2022
USD ($)
Business Segments [Abstract]        
Number of reportable segments | Segment     4  
Gross Operating Margin        
Operating income $ 1,695 $ 1,712 $ 5,008 $ 5,142
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] 566 524 1,644 1,569
Asset impairment charges in operating costs and expenses 11 29 27 48
Net losses (gains) attributable to asset sales and related matters in operating costs and expenses 0 1 (4) 3
General and administrative costs 59 55 172 179
Non-refundable payments received from shippers attributable to make-up rights [2] 12 39 36 112
Subsequent recognition of revenues attributable to make-up rights [3] (23) (18) (68) (63)
Total segment gross operating margin $ 2,320 $ 2,342 $ 6,815 $ 6,990
[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.