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Fair Value Measurements (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Assets and liabilities measured at fair value on a recurring basis      
DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag Derivative liabilities Derivative liabilities  
Unrealized gain on embedded derivative $ 0 $ 0 $ (14)
Recurring basis      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 1,446 1,824  
Nonqualified employee benefit trusts 17 17  
Derivative assets 4 1  
Derivative liabilities (3) (35)  
Recurring basis | Quoted Prices in Active Markets (Level 1)      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 1,446 1,824  
Nonqualified employee benefit trusts 17 17  
Derivative assets 0 0  
Derivative liabilities 0 0  
Recurring basis | Significant Other Observable Inputs (Level 2)      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 0 0  
Nonqualified employee benefit trusts 0 0  
Derivative assets 4 1  
Derivative liabilities (3) (35)  
Recurring basis | Significant Unobservable Inputs (Level 3)      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 0 0  
Nonqualified employee benefit trusts 0 0  
Derivative assets 0 0  
Derivative liabilities 0 0  
Estimate of Fair Value Measurement      
Debt Instrument, Fair Value Disclosure [Abstract]      
Long-term debt, Fair Value 2,827 2,894  
Reported Value Measurement      
Debt Instrument, Fair Value Disclosure [Abstract]      
Long-term debt, Fair Value $ 2,971 $ 2,968