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Debt - Additional Information (Detail)
$ in Thousands, ¥ in Billions
3 Months Ended 6 Months Ended
Mar. 31, 2015
USD ($)
shares
Jun. 30, 2016
USD ($)
Jun. 30, 2016
JPY (¥)
Apr. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2016
JPY (¥)
Dec. 31, 2015
USD ($)
Debt Instrument [Line Items]              
Credit facility maximum borrowing capacity   $ 3,455,604          
Borrowings outstanding   0          
Notes exchanged $ 459,800            
Number of share issued on debt conversion | shares 11,900,000            
Repayments of convertible debt $ 200            
Exchangeable Senior Notes Outstanding   6,600,000          
Carrying Value of Debt   11,139,415         $ 11,626,831
2016 Yen Senior Term Loan [Member]              
Debt Instrument [Line Items]              
Credit facility maximum borrowing capacity   $ 108,900 ¥ 11.2        
Debt Instrument maturity date   2017-03          
Interest Rate, Description   LIBOR plus 1.10%          
Borrowings outstanding         $ 99,600 ¥ 11.2  
2016 Yen Senior Term Loan [Member] | LIBOR [Member]              
Debt Instrument [Line Items]              
Interest rate   1.10%          
Exchangeable Senior Notes [Member]              
Debt Instrument [Line Items]              
Unrealized gain (loss) on derivative instrument $ 8,300            
Term Loan [Member]              
Debt Instrument [Line Items]              
Carrying Value of Debt   $ 1,800,000          
Global Facility [Member]              
Debt Instrument [Line Items]              
Credit facility maximum borrowing capacity   $ 3,750,000   $ 3,000,000 $ 2,300,000    
Debt Instrument maturity date   2020-04          
Revolver [Member]              
Debt Instrument [Line Items]              
Credit facility maximum borrowing capacity | ¥     56.5        
Credit facility current borrowing capacity   $ 438,000 ¥ 45.0