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Intangible Assets and Goodwill (Tables)
 12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets by Business Segment
The following table summarizes our intangible assets by business segment at the dates indicated:
December 31, 2025December 31, 2024
Gross
Value		Accumulated
Amortization		Carrying
Value		Gross
Value		Accumulated
Amortization		Carrying
Value
NGL Pipelines & Services:
Customer relationship intangibles$449 $(289)$160 $449 $(276)$173 
Contract-based intangibles1,050 (177)873 754 (141)613 
Segment total1,499 (466)1,033 1,203 (417)786 
Crude Oil Pipelines & Services:
Customer relationship intangibles2,195 (710)1,485 2,195 (627)1,568 
Contract-based intangibles283 (280)3 283 (278)5 
Segment total2,478 (990)1,488 2,478 (905)1,573 
Natural Gas Pipelines & Services:
Customer relationship intangibles1,351 (700)651 1,351 (663)688 
Contract-based intangibles1,150 (265)885 1,081 (227)854 
Segment total2,501 (965)1,536 2,432 (890)1,542 
Petrochemical & Refined Products Services:
Customer relationship intangibles181 (99)82 181 (92)89 
Contract-based intangibles50 (30)20 45 (30)15 
Segment total231 (129)102 226 (122)104 
Total intangible assets$6,709 $(2,550)$4,159 $6,339 $(2,334)$4,005 
Schedule of Amortization Expense of our Intangible Assets by Business Segment
The following table presents the amortization expense of our intangible assets by business segment for the years indicated:
For the Year Ended December 31,
202520242023
NGL Pipelines & Services$49 $44 $40 
Crude Oil Pipelines & Services85 100 103 
Natural Gas Pipelines & Services75 56 51 
Petrochemical & Refined Products Services7 7 7 
Total$216 $207 $201 
Schedule of Forecasted Amortization Expense Associated with Existing Intangible Assets
The following table presents our forecast of amortization expense associated with existing intangible assets for the years indicated:
20262027202820292030
$224 $225 $221 $217 $217 
Schedule of Significant Acquired Intangible Assets
At December 31, 2025, the carrying value of our portfolio of customer relationship intangible assets was $2.4 billion, the principal components of which were as follows:
Weighted
Average
Remaining
Amortization
Period		December 31, 2025
Gross
Value		Accumulated
Amortization		Carrying
Value
Basin-specific customer relationships:
EFS Midstream (acquired 2015)16.4 years$1,410 $(461)$949 
State Line and Fairplay (acquired 2010)21.2 years895 (356)539 
San Juan Gathering (acquired 2004)13.8 years331 (280)51 
General customer relationships:
Oiltanking (acquired 2014)18.0 years1,193 (386)807 
At December 31, 2025, the carrying value of our portfolio of contract-based intangible assets was $1.8 billion, the principal components of which were as follows:
Weighted
Average
Remaining
Amortization
Period		December 31, 2025
Gross
Value		Accumulated
Amortization		Carrying
Value
Midland Basin customer contracts (acquired 2022)26.0 years$989 $(113)$876 
Pinon Midstream customer contracts (acquired 2024)23.0 years435 (19)416 
Midland Basin Oxy customer contract (acquired 2025)23.0 years360 (5)355 
Jonah natural gas gathering agreements (acquired 2001)16.0 years224 (189)35 
Delaware Basin natural gas processing contracts (acquired 2018)2.1 years82 (66)16 
Schedule of Goodwill The following table presents changes in the carrying amount of goodwill by business segment during the years indicated:
NGL
Pipelines
& Services		Crude Oil
Pipelines
& Services		Natural Gas
Pipelines
& Services		Petrochemical
& Refined
Products
Services		Consolidated
Total
Balance at December 31, 2023 (1)$2,811 $1,841 $– $956 $5,608 
Goodwill related to acquisition (2)29 – 75 – 104 
Balance at December 31, 2024 (1)2,840 1,841 75 956 5,712 
Balance at December 31, 2025 (1)$2,840 $1,841 $75 $956 $5,712 
(1)Balances are presented net of historical accumulated impairment losses of $296 million for the Natural Gas Pipelines & Service segment and $1 million for the Petrochemical & Refined Products Services segment. There have been no goodwill impairment charges recognized for the reporting units within the NGL Pipelines & Services and Crude Oil Pipelines & Services segments.
(2)This amount represents the goodwill recognized in connection with our acquisition of Pinon Midstream in October 2024. In general, we attribute this goodwill to our ability to expand the acquired sour gas gathering and treating system as well as our ability to leverage the acquired business with our existing NGL asset base to create future business opportunities.