Quarterly Financial Information (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended			12 Months Ended			3 Months Ended
	Dec. 31, 2011	Dec. 31, 2009	Sep. 25, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2010 U.S. [Member]	Dec. 31, 2009 North Brunswick Facility [Member]	Sep. 25, 2009 North Brunswick Facility [Member]	Jun. 26, 2009 North Brunswick Facility [Member]	Mar. 27, 2009 North Brunswick Facility [Member]
Deferred tax valuation charge	$ 13
Deferred tax valuation charge, per share	$ 0.09
Impact on net sales due to change in calendar periods	14.3			14.3	(1.0)	4.8
Charge to earnings in pre-tax pension plan obligations							24.0
Charge to earnings in after tax pension plan settlement							15.5
Fixed asset impairment charges		2.5	4.4
Patent litigation settlement			20.0	0	0	(20.0)
Accelerated depreciation charges				2.3		16.2		4.0	4.0	4.0	4.0
Charge associated with operating leases				$ 18.2	$ 18.0	$ 20.5		$ 7.2