Quarterly Financial Data - Narrative (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Restructuring, integration, and other charges, net of taxes	$ 6,320	$ 8,576	$ 9,702	$ 6,141	$ 11,223	$ 6,048	$ 3,584	$ 7,199	$ 30,739	$ 28,054	$ 24,605
Restructuring Charges Net of Tax Per Share Basic and Diluted	$ 0.06	$ 0.08	$ 0.09	$ 0.05	$ 0.10	$ 0.05	$ 0.03	$ 0.06	$ 0.28		$ 0.21
Settlement of legal matters, net of tax	(48,623)							3,609	(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		$ 0.03
Non-cash impact of tax matters									0	0	(11,716)
Gain on bargain purchase, net of related taxes					(410)			(1,078)
Gain On Bargain Purchase Of Business Per Share Basic and Diluted								$ 0.01
Extinguishment of Debt, Gain (Loss), Net of Tax					(549)					(549)	964
Extinguishment of Debt Gain Loss Net of Tax Per Share Basic and Diluted											$ (0.01)
Reduction of the Provision for Income Taxes [Member]
Condensed Financial Statements, Captions [Line Items]
Non-cash impact of tax matters					28,928					28,928	9,404
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted										$ 0.25	$ 0.08
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic					$ 0.26
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Diluted Basis					$ 0.25
Reduction of Interest Expense [Member]
Condensed Financial Statements, Captions [Line Items]
Non-cash impact of tax matters											3,840
Reduction of Interest Expense Tax Related Matters											$ 2,312
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted											$ 0.02