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Business Segment Information - Additional Information (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Segment Reporting Information [Line Items]      
Equity Method Investments $ 315,989 $ 324,610  
Value of net plant and equipment at the date of acquisition of acquired companies 1,123 11,211 $ 74,439
Aerospace Systems      
Segment Reporting Information [Line Items]      
Equity Method Investments $ 251,365 $ 263,246  
Maximum      
Segment Reporting Information [Line Items]      
Equity Method Investment, Ownership Percentage 50.00%