Segment Reporting (Schedule Of Segment Reporting Information, By Operating Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended											12 Months Ended
	Dec. 31, 2011		Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011		Oct. 02, 2010		Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011		Jan. 01, 2011		Jan. 02, 2010
Segment Reporting Information [Line Items]
External revenue	$ 549.2		$ 611.3	$ 640.0	$ 534.1	$ 528.8	[1]	$ 486.9	[2]	$ 424.7	$ 362.9	$ 2,334.6	[3]	$ 1,803.3	[4]	$ 1,596.7	[5]
Depreciation and amortization												95.3		74.0		66.2
Restructuring											(0.5)			(0.5)		1.5
Asset impairments	0.6											0.6				3.6
Intangible asset impairments	1.4											1.4				3.5
Operating income (loss)	4.3		29.0	42.9	24.5	15.3	[1]	19.5	[2]	39.1	25.1	100.7		99.0		97.4
Property, plant and equipment	482.2					503.8						482.2		503.8		343.0
Goodwill	129.6					130.2						129.6		130.2		30.6
Intangibles and other assets	341.1					371.1						341.1		371.1		155.5
Total assets	1,508.9	[6]				1,529.2	[6]					1,508.9	[6]	1,529.2	[6]	873.8	[6]
Additions to property, plant and equipment												48.8		44.0		32.3
Intersegment revenue between North America and other operating segments												14.7		19.0		14.0
North America [Member]
Segment Reporting Information [Line Items]
External revenue												1,809.3	[3]	1,357.3	[4]	1,173.9	[5]
Depreciation and amortization												80.0		59.1		51.0
Restructuring														(0.5)		1.5
Asset impairments																3.6
Intangible asset impairments												1.4
Operating income (loss)												70.4		75.0		77.6
Property, plant and equipment	383.1					400.4						383.1		400.4		236.5
Goodwill	125.1					125.7						125.1		125.7		26.1
Intangibles and other assets	326.1					354.7						326.1		354.7		137.0
Total assets	1,231.3	[6]				1,275.9	[6]					1,231.3	[6]	1,275.9	[6]	632.1	[6]
Additions to property, plant and equipment												39.1		31.9		22.7
United Kingdom [Member]
Segment Reporting Information [Line Items]
External revenue												447.9	[3]	367.1	[4]	359.3	[5]
Depreciation and amortization												13.2		12.8		13.4
Operating income (loss)												27.5		24.5		23.0
Property, plant and equipment	89.8					90.2						89.8		90.2		93.0
Intangibles and other assets	14.6					15.7						14.6		15.7		17.7
Total assets	237.0	[6]				207.4	[6]					237.0	[6]	207.4	[6]	197.0	[6]
Additions to property, plant and equipment												9.5		10.6		8.6
Mexico [Member]
Segment Reporting Information [Line Items]
External revenue												51.8	[3]	50.1	[4]	42.7	[5]
Depreciation and amortization												2.1		2.1		1.8
Asset impairments												0.6
Operating income (loss)												(4.4)		(7.5)		(7.1)
Property, plant and equipment	9.3					13.2						9.3		13.2		13.5
Intangibles and other assets	0.4					0.7						0.4		0.7		0.8
Total assets	28.4	[6]				31.5	[6]					28.4	[6]	31.5	[6]	33.4	[6]
Additions to property, plant and equipment												0.2		1.5		1.0
RCI [Member]
Segment Reporting Information [Line Items]
External revenue												25.6	[3]	28.8	[4]	20.8	[5]
Operating income (loss)												7.2		7.0		3.9
Goodwill	4.5					4.5						4.5		4.5		4.5
Total assets	11.3	[6]				13.7	[6]					11.3	[6]	13.7	[6]	10.6	[6]
All Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 0.9	[6]				$ 0.7	[6]					$ 0.9	[6]	$ 0.7	[6]	$ 0.7	[6]

[1] During the fourth quarter of 2010 we recorded a reduction to the contingent consideration earn-out accrual of $20.3 million.

[2] During the third quarter of 2010, we completed the Cliffstar Acquisition. We recorded $7.2 million of transaction costs related to the acquisition. These costs were recorded in SG&A.

[3] Intersegment revenue between North America and the other reporting segments was $14.7 million for the year ended December 31, 2011.

[4] Intersegment revenue between North America and the other reporting segments was $19.0 million for the year ended January 1, 2011.

[5] Intersegment revenue between North America and the other reporting segments was $14.0 million for the year ended January 2, 2010.

[6] Excludes intersegment receivables, investments and notes receivable.