XML 60 R44.htm IDEA: XBRL DOCUMENT v3.7.0.1
Foreign Currency Sale Contracts (Detail) - Foreign Exchange Contract
3 Months Ended
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
EUR (€)
Mar. 31, 2017
CAD
Euros        
Derivative [Line Items]        
Total transaction amount $ 118,000,000   € 100,000,000  
Change in fair value gain (loss) $ (1,000,000) $ (4,000,000)    
Euros | Minimum        
Derivative [Line Items]        
Transaction Date Range 2014-05      
Forward purchase date range 2017-05      
Euros | Maximum        
Derivative [Line Items]        
Transaction Date Range 2016-01      
Forward purchase date range 2018-01      
Canadian Dollars        
Derivative [Line Items]        
Transaction Date Range 2016-11      
Total transaction amount $ 19,000,000     CAD 25,000,000
Forward purchase date range 2018-11      
Change in fair value gain (loss)   $ (1,000,000)