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Financial Instruments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2013
swap
Derivatives, Fair Value [Line Items]      
Number of interest rate swap agreements     3
Loss incurred on termination of interest rate swaps   $ 2.7  
Derivative losses included in AOCI $ 2.2    
Forward currency contracts [Member]
     
Derivatives, Fair Value [Line Items]      
Number of multiple forward currency contracts matured 3    
Derivatives in Cash Flow Hedging Relationships [Member] | Cross currency swap [Member]
     
Derivatives, Fair Value [Line Items]      
Derivative instrument maturity period (years) 10 years