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Fair Value Measurements (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Assets and liabilities measured at fair value on a recurring basis      
Payment to CHS related to credit provision $ 0 $ 0 $ (5)
(Gain) loss on embedded derivative $ 0 $ (14) $ 1
Debt Instrument, Fair Value Disclosure [Abstract]      
DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag Derivative liabilities Derivative liabilities  
Recurring basis      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents $ 1,824 $ 2,170  
Nonqualified employee benefit trusts 17 16  
Derivative assets 1 12  
Derivative liabilities (35) (85)  
Recurring basis | Quoted Prices in Active Markets (Level 1)      
Assets and liabilities measured at fair value on a recurring basis      
Cash equivalents 1,824 2,170  
Nonqualified employee benefit trusts 17 16  
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 1 12  
Derivative liabilities (35) (85)  
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 2,894 2,764  
Reported Value Measurement      
Debt Instrument, Fair Value Disclosure [Abstract]      
Long-term debt, Fair Value $ 2,968 $ 2,965