v3.26.1
Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Disaggregation of Revenue [Line Items]      
Revenue $ 3,180 $ 2,926  
Loans Receivable, Fair Value Disclosure 730 755  
Financing Receivable, after Allowance for Credit Loss 828   $ 855
Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue 3,212 2,995  
Mong Duong Subsidiary [Member]      
Disaggregation of Revenue [Line Items]      
Financing Receivable, Accrued Interest, after Allowance for Credit Loss 730    
Financing Receivable, after Allowance for Credit Loss 831    
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Mong Duong Subsidiary [Member]      
Disaggregation of Revenue [Line Items]      
Financing Receivable, after Allowance for Credit Loss, Current     107
Financing Receivable, after Allowance for Credit Loss     862
Financing Receivable, after Allowance for Credit Loss, Noncurrent     $ 755
Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 1,105 976  
Other non-606 revenue 9 9  
Revenue 1,114 985  
Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 1,900 1,796  
Other non-606 revenue 166 145  
Revenue 2,066 1,941  
Corporate Other And Other Eliminations [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue (32) (69)  
Corporate Other And Other Eliminations [Member] | Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 0 0  
Other non-606 revenue 0 0  
Revenue 0 0  
Corporate Other And Other Eliminations [Member] | Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax (32) (69)  
Other non-606 revenue 0 0  
Revenue (32) (69)  
Renewables | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue 820 666  
Renewables | Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 0 0  
Other non-606 revenue 0 0  
Revenue 0 0  
Renewables | Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 754 620  
Other non-606 revenue 66 46  
Revenue 820 666  
Utilities | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue 1,136 1,009  
Utilities | Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 1,105 976  
Other non-606 revenue 9 9  
Revenue 1,114 985  
Utilities | Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 21 23  
Other non-606 revenue 1 1  
Revenue 22 24  
Energy Infrastructure | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue 1,256 1,320  
Energy Infrastructure | Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 0 0  
Other non-606 revenue 0 0  
Revenue 0 0  
Energy Infrastructure | Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 1,157 1,222  
Other non-606 revenue 99 98  
Revenue 1,256 1,320  
New Energy Technologies | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue 0 0  
New Energy Technologies | Regulated Revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 0 0  
Other non-606 revenue 0 0  
Revenue 0 0  
New Energy Technologies | Non-regulated revenue [Member] | Operating Segments [Member]      
Disaggregation of Revenue [Line Items]      
Revenue from Contract with Customer, Including Assessed Tax 0 0  
Other non-606 revenue 0 0  
Revenue $ 0 $ 0