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Financial Instruments, Derivatives and Fair Value Measures - Carrying Value and Fair Value (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: $ 734 $ 816
Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: 620 748
Carrying Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Long-term Debt (16,760) (18,050)
Foreign currency forward exchange contracts, receivable position 563 292
Foreign currency forward exchange contracts, (payable) position (172) (97)
Interest rate hedge contracts, receivable position 0 87
Interest rate hedge contracts, payable position (81) 0
Carrying Value | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: 620 748
Carrying Value | Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: 114 68
Fair Value    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Long-term Debt (17,033) (21,152)
Foreign currency forward exchange contracts, receivable position 563 292
Foreign currency forward exchange contracts, (payable) position (172) (97)
Interest rate hedge contracts, receivable position 0 87
Interest rate hedge contracts, payable position (81) 0
Fair Value | Equity securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: 620 748
Fair Value | Other    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Investment Securities: $ 114 $ 68