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Debt (Additional Information) (Detail)
$ in Thousands
Jun. 30, 2018
USD ($)
Revolving Loan Facility  
Debt Instrument [Line Items]  
Remaining capacity $ 507,915
Maximum borrowing capacity 1,000,000
Trade letters of credit issued 4,085
European Revolving Loan Facility  
Debt Instrument [Line Items]  
Remaining capacity 0
Australian Revolving Facility  
Debt Instrument [Line Items]  
Remaining capacity 47,710
Accounts Receivable Securitization Facility  
Debt Instrument [Line Items]  
Maximum borrowing capacity 225,000
Current borrowing capacity 200,000
Other International Debt  
Debt Instrument [Line Items]  
Remaining capacity $ 120,726