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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Changes in the amounts of our goodwill for each of the years ended December 31, 2024 and 2023 are summarized by segment as follows:  
 Natural Gas PipelinesProducts PipelinesTerminals
CO2
Total
(In millions)
Gross goodwill
$20,832 $2,796 $1,481 $1,642 $26,751 
Accumulated impairment losses
(4,240)(1,267)(679)(600)(6,786)
December 31, 202216,592 1,529 802 1,042 19,965 
Acquisition of STX Midstream156 — — — 156 
December 31, 202316,748 1,529 802 1,042 20,121 
Acquisition(a)(28)— — — (28)
Divestitures(b)— — — (9)(9)
December 31, 202416,720 1,529 802 1,033 20,084 
Gross goodwill
20,960 2,796 1,481 1,633 26,870 
Accumulated impairment losses
(4,240)(1,267)(679)(600)(6,786)
December 31, 2024$16,720 $1,529 $802 $1,033 $20,084 
(a)Reflects adjustment to purchase price allocation related to the December 2023 STX Midstream acquisition.
(b)Associated with our CO2 business segment assets that were divested in June 2024.