Quarterly Financial Data - Narrative (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Amortization of Intangible Assets Net of Tax	$ 8,120	$ 7,074	$ 7,029	$ 7,116	$ 7,255	$ 7,145	$ 7,360	$ 7,576	$ 29,339	$ 29,336	$ 27,070
Amortization of Intangible Assets Net of Tax Per Share Basic and Diluted	$ 0.08	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.29	$ 0.27	$ 0.24
Restructuring, integration, and other charges, net of taxes	13,341	16,077	20,688	15,495	6,320	8,576	9,702	6,141	65,601	30,739	28,054
Restructuring Charges Net of Tax Per Share Basic				$ 0.15					$ 0.64		$ 0.25
Restructuring Charges Net of Tax Per Share Diluted				$ 0.14					$ 0.63		$ 0.24
Restructuring Charges Net of Tax Per Share Basic and Diluted	$ 0.13	$ 0.16	$ 0.20		$ 0.06	$ 0.08	$ 0.09	$ 0.05		$ 0.28
Interest Expense Net of Tax	297		939
Interest Expense Net of Tax Per Share Basic and Diluted			$ 0.01
Gains Losses On Extinguishment of Debt Net of Tax				2,627
Extinguishment of Debt Gain Loss Net of Tax Per Share Basic and Diluted				$ 0.02
Settlement of legal matters, net of tax					(48,623)					(48,623)	3,609
Net of Tax, Per Share Related to Litigation Settlement Per Share Basic					$ 0.46					$ 0.45
Net of Tax, Per Share Related to Litigation Settlement Per Share Diluted					$ 0.45					$ 0.44
Net of Tax, Per Share Related to Litigation Settlement Per Share Basic and Diluted											$ 0.03
Increase in the Provision for Income Taxes [Member]
Condensed Financial Statements, Captions [Line Items]
Non-cash impact of tax matters	$ 15,447		$ 5,362						$ 20,809
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted	$ 0.15		$ 0.05						$ 0.20