Segment Information (Reconciliations Of Segment Gross Profit And Segment Operating Income) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Gross Profit	$ 272,000,000	$ 261,200,000	$ 815,800,000	$ 758,200,000
Gross profit for reportable segments	261,100,000	246,500,000	769,600,000	718,400,000
Segment Reporting Information, Operating (Loss) Income	70,400,000	137,700,000	225,500,000	373,100,000
Restructuring and other charges	(65,400,000)	(900,000)	(82,900,000)	(7,000,000)
Other unallocated operating expenses	(267,800,000)	(138,800,000)	(686,700,000)	(425,000,000)
Operating Income (Loss)	(6,700,000)	107,700,000	82,900,000	293,400,000
Reportable Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Gross Profit	272,000,000	261,200,000	815,800,000	758,200,000
Segment Reporting Information, Operating (Loss) Income	70,400,000	137,700,000	225,500,000	373,100,000
Unallocated Amount to Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other unallocated manufacturing costs	(10,900,000)	(14,700,000)	46,200,000	39,800,000
Restructuring and other charges	(65,400,000)	(900,000)	82,900,000	7,000,000
Other unallocated operating expenses	$ (800,000)	$ (14,400,000)	$ 13,500,000	$ 32,900,000