Quarterly Financial Data - Narrative (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2010	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Condensed Financial Statements, Captions [Line Items]
Restructuring, integration, and other charges, net of taxes	$ 11,223	$ 6,048	$ 3,584	$ 7,199	$ 5,459	$ 9,506	$ 4,095	$ 5,545	$ 28,054	$ 24,605	$ 75,720
Restructuring Charges Net of Tax Per Share Basic and Diluted	$ 0.1	$ 0.05	$ 0.03	$ 0.06	$ 0.05	$ 0.08	$ 0.03	$ 0.05		$ 0.21	$ 0.63
Non-cash impact of tax matters	28,928								0	(11,716)	0
Extinguishment of Debt, Gain (Loss), Net of Tax	549						964			(964)	(3,228)
Extinguishment of Debt Gain Loss Net of Tax Per Share Basic and Diluted							$ 0.01			$ (0.01)	$ 0.03
Gain Loss Related to Litigation Settlement Net of Tax				3,609					(3,609)	0	0
Loss Related to Litigation Settlement, Per Share, Basic and Diluted				$ 0.03
Gain on bargain purchase	410			(1,078)
Gain On Bargain Purchase Of Business Per Share Basic and Diluted				$ 0.01
Reduction of the Provision for Income Taxes [Member]
Condensed Financial Statements, Captions [Line Items]
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted					$ 0.08
Non-cash impact of tax matters	28,928				9,404
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]
Tax Adjustments, Settlements, and Unusual Provisions, Per Share Basic and Diluted					$ 0.02
Non-cash impact of tax matters					$ 2,312