Financial Instruments (Foreign Exchange Risk and Its Classification on Balance Sheet) (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Designated as Hedging Instrument
Derivatives, Fair Value
Assets	$ 46,500,000
Liabilities	6,100,000
Not Designated as Hedging Instrument
Derivatives, Fair Value
Assets	50,600,000
Liabilities	13,300,000
Foreign Exchange Contract | Designated as Hedging Instrument
Derivatives, Fair Value
Liabilities	3,300,000	$ 0
Foreign Exchange Contract | Prepaid expenses and other current assets | Designated as Hedging Instrument
Derivatives, Fair Value
Assets	2,800,000
Foreign Exchange Contract | Prepaid expenses and other current assets | Not Designated as Hedging Instrument
Derivatives, Fair Value
Assets	4,100,000
Foreign Exchange Contract | Accounts payable and accrued expenses | Designated as Hedging Instrument
Derivatives, Fair Value
Liabilities	6,100,000
Foreign Exchange Contract | Accounts payable and accrued expenses | Not Designated as Hedging Instrument
Derivatives, Fair Value
Liabilities	6,100,000
Interest Rate Contract | Prepaid expenses and other current assets | Not Designated as Hedging Instrument
Derivatives, Fair Value
Assets	0
Interest Rate Contract | Accounts payable and accrued expenses | Not Designated as Hedging Instrument
Derivatives, Fair Value
Liabilities	1,100,000
Interest Rate Contract | Long-term borrowings | Designated as Hedging Instrument
Derivatives, Fair Value
Assets	43,700,000
Liabilities	$ 0