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Fair Value Disclosures - Summary of Non-Pension Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets $ 173  
Liabilities   $ (17)
Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 237 40
Liabilities (64) (57)
Investment securities, including mutual funds 16 13
Level 1 | Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Liabilities 0 0
Investment securities, including mutual funds 16 13
Level 2 | Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 237 40
Liabilities (64) (57)
Investment securities, including mutual funds 0 0
Level 3 | Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Liabilities 0 0
Investment securities, including mutual funds $ 0 $ 0