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Fair Value Disclosures - Summary of Non-Pension Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of derivatives, liability $ (17) $ (110)
Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 40 28
Fair value of derivatives, liability (57) (138)
Investment securities, including mutual funds 13 10
Level 1 | Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 0 0
Fair value of derivatives, liability 0 0
Investment securities, including mutual funds 13 10
Level 2 | Fair Value Measurements on Recurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets 40 28
Fair value of derivatives, liability (57) (138)
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
Fair value of derivatives, liability 0 0
Investment securities, including mutual funds $ 0 $ 0