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Debt Obligations - Schedule of Short-term Debt (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Current maturities of long-term liabilities $ 1,831 $ 1,700
Total short term debt $ 2,345 2,216
Term loan JPY 28.3 billion [Member]    
Debt Instrument [Line Items]    
Weighted average interest rate 0.25%  
Banks And Financial Institutions [Member]    
Debt Instrument [Line Items]    
Short-term borrowings   2
Convertible debentures [Member]    
Debt Instrument [Line Items]    
Maturity 2026  
Short-term borrowings $ 514 $ 514