Fair Value Measurements - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) item	Dec. 31, 2015 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of counterparties, which experienced significant downgrades | item	0
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets	$ 0	$ 0
Liabilities	0	0
Level 2 | Fair Value Measured on Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	12,000,000	1,300,000
Derivative liabilities	34,300,000	$ 22,600,000
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	700,000
Derivative liabilities	$ 100,000
Derivative assets and liabilities measurement valuation	Interest rate swap — valued using LIBOR yield curves at the reporting date.
Level 2 | Fair Value Measured on Recurring Basis | Treasury Locks
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	$ 10,300,000
Derivative assets and liabilities measurement valuation	T-Locks-valued using UST 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	$ 1,000,000
Derivative liabilities	$ 34,200,000
Derivative assets and liabilities measurement valuation	Foreign exchange derivative assets and liabilities — valued using quoted forward foreign exchange prices at the reporting date.