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Variable Interest Entities (Details)
$ in Millions
Mar. 31, 2026
USD ($)
variable_interest_entity
solar_generation_facility
numberOfBatteryStorageFacilities
numberOfWindGenerationFacilities
MW
Dec. 31, 2025
USD ($)
variable_interest_entity
Variable Interest Entity [Line Items]    
Assets $ 19,513 $ 19,595
Liabilities $ 8,780 8,696
Generation facility capacity (mw) | MW 500  
Investments in equity method investees $ 615 $ 625
Sunlight Renewable Holdings | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Battery Storage Capacity | MW 230  
Differential Membership Interests    
Variable Interest Entity [Line Items]    
Number of entities consolidated | variable_interest_entity 13 15
Number of wind facilities | numberOfWindGenerationFacilities 28  
Number of solar facilities | solar_generation_facility 8  
Number of battery storage facilities | numberOfBatteryStorageFacilities 1  
Differential Membership Interests | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Assets $ 8,516 $ 9,601
Liabilities $ 461 504
XPLR Subsidiaries | Noncontrolling Class B interests [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Number of entities consolidated | variable_interest_entity 3  
Assets $ 10,014 10,066
Liabilities $ 1,482 1,464
Generation facility capacity (mw) | MW 4,427  
Battery Storage Capacity | MW 120  
Rosmar, Silver State, Meade Pine Brooke, Star Moon and Emerald [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Number of entities consolidated | variable_interest_entity 3  
Other Acquisitions [Member] | Differential Membership And Noncontrolling Class B Interests [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Assets $ 6,769 7,217
Liabilities 408 419
Sunlight Renewable Holdings | Differential Membership Interests | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Assets 325 329
Liabilities 9 8
Rosmar Holdings, LLC | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Investments in equity method investees 77 82
Sunlight Renewable Holdings And Silver State South Solar, LLC | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Assets 993 1,006
Liabilities $ 29 $ 28
XPLR OpCo [Member]    
Variable Interest Entity [Line Items]    
Limited partner interest percentage 48.80%  
Noncontrolling limited partner interest percentage 51.20%  
Battery Storage Facility | Sunlight Renewable Holdings | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Limited partner interest percentage 67.00%  
Battery Storage Facility | Silver State South Solar, LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Limited partner interest percentage 50.00%