Segment Information (Consolidated Revenue By Country Based On Customer Location) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Apr. 02, 2010	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Revenue from External Customer [Line Items]
Revenue	$ 316.8	$ 329.8	$ 316.7	$ 322.4	$ 410.5	$ 429.8	$ 422.8	$ 379.2	$ 1,285.7	$ 1,642.3	$ 1,525.7
United States [Member]
Revenue from External Customer [Line Items]
Consolidated revenue									642.5	1,138.2	993.3
All Other Countries [Member]
Revenue from External Customer [Line Items]
Consolidated revenue									$ 643.2	$ 504.1	$ 532.4