Fair Value Measurements - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017 USD ($) item
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of counterparties, which experienced significant downgrades | item	0
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets	$ 0
Liabilities	0
Level 2 | Fair Value Measured on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	14,100,000
Derivative liabilities	6,300,000
Level 2 | Fair Value Measured on Recurring Basis | Interest Rate Swap Agreements
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	600,000
Derivative liabilities	$ 400,000
Derivative assets and liabilities measurement valuation	Interest rate swaps — valued using LIBOR yield curves at the reporting date.
Level 2 | Fair Value Measured on Recurring Basis | Foreign Currency Forward Exchange Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	$ 13,500,000
Derivative liabilities	$ 5,900,000
Derivative assets and liabilities measurement valuation	Foreign exchange derivative assets and liabilities — valued using quoted forward prices at the reporting date.
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets	$ 0
Liabilities	$ 0