Reorganization and Realignment Costs G&A Realignment Costs (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 27, 2015	Sep. 28, 2014		Sep. 27, 2015	Sep. 28, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 5,754	$ 1,389	[1]	$ 16,646	$ 17,376	[1]
General and Administrative Realignment and Reinvestment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		785			4,429
Restructuring and Related Cost, Cost Incurred to Date		16,643			16,643
Restructuring Charges		1,461	$ 0		9,996	$ 0
Restructuring Charges, Incurred to Date		22,922			22,922
General and Administrative Realignment and Reinvestment [Member] | Severance and related employee costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		513			3,132
Restructuring and Related Cost, Cost Incurred to Date		15,049			15,049
General and Administrative Realignment and Reinvestment [Member] | Recruitment and relocation costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining		3,000			3,000
Restructuring and Related Cost, Incurred Cost		270			1,254
Restructuring and Related Cost, Cost Incurred to Date		1,463			1,463
General and Administrative Realignment and Reinvestment [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		2			43
Restructuring and Related Cost, Cost Incurred to Date		131			131
General and Administrative Realignment and Reinvestment [Member] | Share Based Compensation Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	[2]	676			5,567
Restructuring Charges, Incurred to Date	[2]	$ 6,279			$ 6,279

[1] Previously titled “Facilities action charges (income), net.”

[2] Represents incremental share-based compensation resulting from the modification of stock options and performance-based awards in connection with the termination of employees under our G&A realignment plan.