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GOODWILL AND INTANGIBLE ASSETS (Tables)
 12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill by Segment The following table sets forth our goodwill, by segment, for the periods indicated:
Natural Gas
Gathering and
Processing		Natural Gas
Liquids		Natural Gas
Pipelines
Refined Products and Crude
Total
 
(Millions of dollars)
Gross goodwill$153 $371 $157 $— $681 
Accumulated impairment losses(153)— — — (153)
December 31, 2022— 371 157 — 528 
Magellan Acquisition (a)— — — 4,424 4,424 
December 31, 2023$— $371 $157 $4,424 $4,952 
(a) - Goodwill primarily represents expected tax benefits from future depreciation and amortization of acquired assets and commercial synergies and is expected to be fully deductible for tax purposes. The allocation of goodwill is preliminary and may be updated as we continue to evaluate the benefits of expected commercial synergies to our segments.
Gross Carrying Amount and Accumulated Amortization of Intangible Assets The following table reflects the gross carrying amount and accumulated amortization of intangible assets as of the dates presented:
December 31,
2023		December 31,
2022
 
(Millions of dollars)
Gross intangible assets (a)$1,505 $381 
Accumulated amortization(189)(156)
Intangible assets, net
$1,316 $225 
        
(a) - Increases to gross intangible assets primarily represent customer relationships associated with the Magellan Acquisition.