Annual report [Section 13 and 15(d), not S-K Item 405]

Income Taxes - Narrative (Details)

v3.25.4
Income Taxes - Narrative (Details)
$ in Millions
 1 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Operating Loss Carryforwards [Line Items]        
Accelerated Tax Bonus Depreciation Percentage on Qualifying Assets   1    
Proceeds from Income Tax Refund, Federal $ 380      
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 63 $ 63 $ 65 $ 66
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense   6 6 $ 4
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 15 15 $ 10  
Federal Tax [Member]        
Operating Loss Carryforwards [Line Items]        
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration 1,200 1,200    
State Tax [Member]        
Operating Loss Carryforwards [Line Items]        
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration $ 2,200 $ 2,200