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Acquisitions and Other Transactions (Northwind Midstream - Assets Acquired and Liabilities Assumed) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Aug. 29, 2025
Dec. 31, 2024
Dec. 31, 2023
Liabilities assumed:        
Goodwill $ 8,755   $ 7,645 $ 7,645
Northwind Midstream        
Assets acquired:        
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent 17      
Business Combination, Recognized Asset Acquired, Receivable, Current 11      
Business Combination, Recognized Asset Acquired, Other Asset, Current 1      
Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment 1,169      
Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 951      
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent 2      
Business Combination, Recognized Asset Acquired, Asset 2,151      
Liabilities assumed:        
Business Combination, Recognized Liability Assumed, Accounts Payable, Current 22      
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current 84      
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current 9      
Business Combination, Recognized Liability Assumed, Other Liability, Current 1      
Business Combination, Recognized Liability Assumed, Operating Lease Liability, Long-term 1      
Business Combination, Recognized Liability Assumed, Liability 117      
Recognized Identifiable Assets Acquired and Liabilities Assumed, Net 2,034      
Goodwill 379      
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill $ 2,413      
Northwind Midstream | Previously Reported        
Assets acquired:        
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   $ 17    
Business Combination, Recognized Asset Acquired, Receivable, Current   11    
Business Combination, Recognized Asset Acquired, Other Asset, Current   1    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment   1,182    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   951    
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent   2    
Business Combination, Recognized Asset Acquired, Asset   2,164    
Liabilities assumed:        
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   15    
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current   84    
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current   6    
Business Combination, Recognized Liability Assumed, Other Liability, Current   1    
Business Combination, Recognized Liability Assumed, Operating Lease Liability, Long-term   1    
Business Combination, Recognized Liability Assumed, Liability   107    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   2,057    
Goodwill   356    
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   2,413    
Northwind Midstream | Revision of Prior Period, Adjustment        
Assets acquired:        
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent   0    
Business Combination, Recognized Asset Acquired, Receivable, Current   0    
Business Combination, Recognized Asset Acquired, Other Asset, Current   0    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment   (13)    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   0    
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent   0    
Business Combination, Recognized Asset Acquired, Asset   (13)    
Liabilities assumed:        
Business Combination, Recognized Liability Assumed, Accounts Payable, Current   7    
Business Combination, Recognized Liability Assumed, Accrued Property, Plant and Equipment, Current   0    
Business Combination, Recognized Liability Assumed, Accrued Liabilities, Current   3    
Business Combination, Recognized Liability Assumed, Other Liability, Current   0    
Business Combination, Recognized Liability Assumed, Operating Lease Liability, Long-term   0    
Business Combination, Recognized Liability Assumed, Liability   10    
Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   (23)    
Goodwill   23    
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill   $ 0