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Derivatives - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2015
Derivative [Line Items]            
Gains (losses) reclassified from AOCI into income (effective portion), Net of Tax   $ 23,922 $ 15,389 $ 67,235 $ 22,157  
Interest Rate Lock [Member] | 2.000 Percent Senior Notes [Member]            
Derivative [Line Items]            
Debt instrument, interest rate 2.00%          
Interest Expense, Net [Member] | Interest Rate Lock [Member]            
Derivative [Line Items]            
Gains (losses) reclassified from AOCI into income (effective portion), Net of Tax   (5)   $ (15)    
Interest Expense, Net [Member] | Interest Rate Lock [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]            
Derivative [Line Items]            
Gains (losses) reclassified from AOCI into income (effective portion), Net of Tax $ 100          
Not Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Forward contracts, maturity period       2017-10    
Forward contracts maturity value   358,800   $ 358,800   $ 306,400
Cash Flow Hedging [Member]            
Derivative [Line Items]            
Fair value of forward contracts   1,682   $ 1,682   $ 1,578
Forward contracts, maturity period       2019-10   2018-06
Ineffectiveness recognized   300 $ 200 $ 400 $ 2,200  
Amount expected to be reclassified from AOCI to earnings within the next 12 months       70,900    
Cash Flow Hedging [Member] | Hedging Instruments [Member] | Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Fair Value Asset/(Liability) Net   121,628   121,628   $ 191,890
Economic Hedges, Gross [Member] | Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Fair Value Asset/(Liability) Net   $ 8,938   $ 8,938   $ 3,452
Minimum [Member]            
Derivative [Line Items]            
Foreign exchange contracts maturity period, years       3 years    
Maximum [Member]            
Derivative [Line Items]            
Foreign exchange contracts maturity period, years       4 years