Fair Value Measurement Derivative Instruments and Hedging Activities Disclosure (Details) $ in Thousands, € in Millions, ¥ in Millions, £ in Millions, SFr in Millions, CAD in Millions	Mar. 31, 2017 EUR (€)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 JPY (¥)	Mar. 31, 2017 CAD	Mar. 31, 2017 CHF (SFr)	Mar. 31, 2017 GBP (£)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 JPY (¥)	Dec. 31, 2016 CAD	Dec. 31, 2016 CHF (SFr)	Dec. 31, 2016 GBP (£)
Derivative [Line Items]
Foreign currency exposure on hedged foreign currency contracts		$ 77,700						$ 46,900
Foreign currency exposure on dedesignated foreign currency contracts		56,200						107,500
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount	€ 1.5		¥ 3,377.6	CAD 54.4	SFr 3.6		€ 1.5		¥ 0.0	CAD 54.4	SFr 3.6
Derivative assets (liabilities), at fair value, net		(409)						424
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount	€ 3.6		¥ 233.8	CAD 0.0		£ 34.0	€ 8.0		¥ 2,464.7	CAD 32.4		£ 33.8
Derivative assets (liabilities), at fair value, net		6,538						10,785
Prepaid Expenses and Other Current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative asset, current		57						71
Prepaid Expenses and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative asset, current		2,163						5,344
Other Noncurrent Assets [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative asset, noncurrent		0						367
Other Noncurrent Assets [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative asset, noncurrent		4,503						5,468
Other Current Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative liability, current		47						9
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative liability, current		128						27
Other Noncurrent Liabilities [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative liability, noncurrent		$ 419						$ 5