v3.26.1
Acquisitions and Other Transactions (Matterhorn) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Jun. 16, 2025
Business Combination [Line Items]      
Investments - acquisitions and contributions $ 238 $ 119  
MXP Parent, LLC      
Business Combination [Line Items]      
Equity Method Investment, Addition Ownership Acquired     5.00%
Equity method investment, ownership percentage     10.00%
Difference between carrying amount and underlying equity     $ 124
MXP Parent, LLC | Property, Plant and Equipment      
Business Combination [Line Items]      
Difference between carrying amount and underlying equity     63
MXP Parent, LLC | Customer-Related Intangible Assets      
Business Combination [Line Items]      
Difference between carrying amount and underlying equity     $ 61