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Property, Plant and Equipment, net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, net $ 38,013 $ 37,297  
Depreciation Depletion and Amortization Expense for Property, Plant and Equipment 2,127 2,020 $ 1,905
Interstate Natural Gas FERC-Regulated      
Property, Plant and Equipment [Line Items]      
Accumulated depreciation, depletion and amortization (10,712) (10,301)  
Depreciable assets 12,295 12,077  
Property, plant and equipment, net 12,914 12,524  
Interstate Natural Gas FERC-Regulated | Pipelines      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 12,376 12,019  
Interstate Natural Gas FERC-Regulated | Pipelines | Minimum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 1.09%    
Interstate Natural Gas FERC-Regulated | Pipelines | Maximum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 6.67%    
Interstate Natural Gas FERC-Regulated | Equipment      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 9,488 9,190  
Interstate Natural Gas FERC-Regulated | Equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 1.09%    
Interstate Natural Gas FERC-Regulated | Equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 6.67%    
Interstate Natural Gas FERC-Regulated | Other      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 1,143 1,169  
Interstate Natural Gas FERC-Regulated | Other | Minimum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 0.00%    
Interstate Natural Gas FERC-Regulated | Other | Maximum      
Property, Plant and Equipment [Line Items]      
Composite Depreciation Rates 33.00%    
Interstate Natural Gas FERC-Regulated | Land and land rights-of-way      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 51 53  
Interstate Natural Gas FERC-Regulated | Construction work in process      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 568 394  
Other      
Property, Plant and Equipment [Line Items]      
Accumulated depreciation, depletion and amortization (11,470) (11,774)  
Depreciable assets 23,293 23,324  
Property, plant and equipment, net 25,099 24,773  
Other | Pipelines      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 8,933 9,631  
Other | Pipelines | Minimum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 5 years    
Composite Depreciation Rates 0.09%    
Other | Pipelines | Maximum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 40 years    
Composite Depreciation Rates 33.33%    
Other | Equipment      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 20,243 19,974  
Other | Equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 5 years    
Composite Depreciation Rates 0.09%    
Other | Equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 40 years    
Composite Depreciation Rates 33.33%    
Other | Other      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 5,587 5,493  
Other | Other | Minimum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 3 years    
Composite Depreciation Rates 0.00%    
Other | Other | Maximum      
Property, Plant and Equipment [Line Items]      
Straight-Line Estimated Useful Life 10 years    
Composite Depreciation Rates 33.33%    
Other | Land and land rights-of-way      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 786 798  
Other | Construction work in process      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 1,020 $ 651