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Business Segments, Gross Operating Margin (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Business Segments [Abstract]      
Operating income $ 6,907 $ 6,103 $ 5,035
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] 2,107 2,011 1,962
Asset impairment charges in operating costs and expenses 53 233 890
Net losses (gains) attributable to asset sales and related matters in operating costs and expenses 1 5 (4)
General and administrative costs 241 209 220
Non-refundable payments received from shippers attributable to make-up rights [2] 144 85 118
Subsequent recognition of revenues attributable to make-up rights [3] (97) (138) (33)
Total segment gross operating margin $ 9,356 $ 8,508 $ 8,188
[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.