Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Rental expense		$ 97,100	$ 77,100	$ 70,900
Restructuring	[1]	100,411	20,424	0
Sublease income		400	$ 300	$ 300
Liability for loss on lease obligation		20,700
Purchase obligations anticipated for 2015		11,400
Contingent obligations to purchase inventory		18,700
Santa Clara Office
Loss Contingencies [Line Items]
Liability for loss on lease obligation		15,000
2015 Restructuring Program [Member]
Loss Contingencies [Line Items]
Restructuring		68,900
Facility Closing [Member]
Loss Contingencies [Line Items]
Restructuring		22,100
Facility Closing [Member] | 2015 Restructuring Program [Member]
Loss Contingencies [Line Items]
Restructuring		$ 22,100

[1] Represents expenses presented to management on a consolidated basis only and not allocated to the operating segments