Financial Instruments (Effect Of Derivative Instruments Designated As Cash Flow Hedges Included In AOCI On Condensed Consolidated Balance Sheets) (Details) (Cash Flow Hedging [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011
Treasury Locks [Member] | Interest Expense [Member]
Investment Holdings [Line Items]
Effective Portion of Gain / (Loss) Recognized in Accumulated OCI		$ 2.1
Effective Portion of Gain / (Loss) Reclassified from Accumulated OCI into Income	0.4
Firm Commitments [Member] | Net Sales [Member]
Investment Holdings [Line Items]
Effective Portion of Gain / (Loss) Recognized in Accumulated OCI		0.1
Effective Portion of Gain / (Loss) Reclassified from Accumulated OCI into Income		$ 0.1