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v3.25.1

Business Segments and Related Information (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2025 USD ($) Segment | Mar. 31, 2024 USD ($)
Business Segments [Abstract] |  |  |
Number of reportable segments | Segment |  | 4 |
Total segment gross operating margin |  | $ 2,464 | $ 2,507
Adjustments to reconcile total segment gross operating margin to income before income taxes (addition or subtraction indicated by sign): |  |  |
Depreciation, amortization and accretion expense in operating costs and expenses | [1] | (602) | (582)
Asset impairment charges in operating costs and expenses |  | (10) | (20)
Net gains attributable to asset sales and related matters in operating costs and expenses |  | 2 | 0
General and administrative costs |  | (60) | (66)
Non-refundable payments received from shippers attributable to make-up rights | [2] | (37) | (25)
Subsequent recognition of revenues attributable to make-up rights | [3] | 4 | 8
Total other expense, net | [4] | (331) | (318)
Income before income taxes |  | $ 1,430 | $ 1,504
[1] | Excludes amortization of major maintenance costs for reaction-based plants and amortization of finance lease right-of-use (“ROU”) assets, which are components 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.
[4] | As presented on our Statements of Consolidated Operations, Total other expense, net is comprised of Interest expense, Interest income and Other, net.

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- Definition The amount of expense recognized and charged to operating costs and expenses in the current period that reflects the allocation of the cost of assets over the assets' useful lives excluded from gross operating margin. + References No definition available. + Details
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- Definition The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss) recorded in operating costs and expenses excluded from gross operating margin. + References No definition available. + Details
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- Definition Non-refundable deferred revenues attributable to shipper make-up rights on new pipeline projects included in gross operating margin. + References No definition available. + Details
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- Definition Operating income before: (i) depreciation, amortization and accretion expense; (ii) non-cash consolidated asset impairment charges; (iii) operating lease expenses for which the entity does not have the payment obligation; (iv) gains and losses from asset sales and related transactions and (v) general and administrative costs. + References No definition available. + Details
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