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Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Number of days from period end 2 days  
CDS Contract A    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit Derivative, Term 12 months  
Derivative, Notional Amount $ 550  
CDS Contract B    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit Derivative, Term 9 months  
Derivative, Notional Amount $ 107  
CDS Contract C    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Credit Derivative, Term 5 months  
Derivative, Notional Amount $ 93  
CDS Contracts Aggregate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative, Notional Amount 750 $ 739
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Long-term and Short-term, Combined Amount 7,527 7,328
Carrying value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Long-term and Short-term, Combined Amount 7,539 7,541
Level 1 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Long-term and Short-term, Combined Amount 7,166 4,503
Level 2 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Long-term and Short-term, Combined Amount 361 2,825
Level 3 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, Long-term and Short-term, Combined Amount $ 0 $ 0