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Debt - Additional Information (Detail)
€ in Millions, $ in Millions, ¥ in Billions
3 Months Ended
Mar. 31, 2018
USD ($)
Mar. 31, 2018
JPY (¥)
Jun. 30, 2018
USD ($)
Jun. 30, 2018
EUR (€)
Jun. 30, 2018
JPY (¥)
Mar. 31, 2018
EUR (€)
Mar. 31, 2018
JPY (¥)
Dec. 31, 2017
USD ($)
Dec. 31, 2017
JPY (¥)
Debt Instrument [Line Items]                  
Senior notes     $ 29,815         $ 28,367  
Short-term debt     $ 757         2,880  
Long term debt currency portion USD     65.00% 65.00% 65.00%        
Long term debt currency portion EUR     33.00% 33.00% 33.00%        
Long term debt currency portion CHF     2.00% 2.00% 2.00%        
Netherlands II B.V. [Member]                  
Debt Instrument [Line Items]                  
Senior notes $ 2,500         € 1,600      
Senior notes USD 1,500 million [Member]                  
Debt Instrument [Line Items]                  
Senior notes               1,500  
Debt instrument face amount 1,500   $ 1,500            
Senior notes EUR 1,000 million [Member]                  
Debt Instrument [Line Items]                  
Senior notes               $ 1,199  
Debt instrument face amount | €       € 1,000   € 1,000      
Term loan JPY 35 billion due 2018 and 2019 [Member]                  
Debt Instrument [Line Items]                  
Repayments of debt | ¥   ¥ 70.0              
Debentures USD 15 million [Member]                  
Debt Instrument [Line Items]                  
Debt instrument face amount     15            
Loan payment prepaid 15                
Term Loan Facility [Member]                  
Debt Instrument [Line Items]                  
Repayments of debt $ 2,300                
Term loan JPY 58.5 billion [Member]                  
Debt Instrument [Line Items]                  
Debt instrument face amount | ¥         ¥ 58.5        
Loan payment prepaid | ¥             ¥ 86.8    
Short-term debt | ¥                 ¥ 28.3
Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Revolving credit facility     $ 3,000