v3.19.3.a.u2
Borrowings - Carrying Value and Fair Value of Long-Term Borrowings Determined Market Prices EUR/USD Foreign Exchange Rate (Detail)
€ in Millions, $ in Millions
Dec. 31, 2019
USD ($)
Apr. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
May 06, 2015
EUR (€)
Debt Instrument [Line Items]        
Maturity Amount $ 4,986      
Unamortized Discount and Debt Issuance Costs (31)      
Carrying Value 4,955   $ 4,979  
Fair Value 5,254   $ 5,000  
4.25% Notes due 2021 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 750      
Unamortized Discount and Debt Issuance Costs (1)      
Carrying Value 749      
Fair Value 775      
3.375% Notes due 2022 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 750      
Unamortized Discount and Debt Issuance Costs (2)      
Carrying Value 748      
Fair Value 777      
3.50% Notes due 2024 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 1,000      
Unamortized Discount and Debt Issuance Costs (4)      
Carrying Value 996      
Fair Value 1,062      
1.25% Notes due 2025 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 786     € 700
Unamortized Discount and Debt Issuance Costs (5)      
Carrying Value 781      
Fair Value 832      
3.20% Notes due 2027 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 700      
Unamortized Discount and Debt Issuance Costs (5)      
Carrying Value 695      
Fair Value 740      
3.25% Notes due 2029 [Member]        
Debt Instrument [Line Items]        
Maturity Amount 1,000 $ 1,000    
Unamortized Discount and Debt Issuance Costs (14)      
Carrying Value 986      
Fair Value $ 1,068