Financial Instruments (Fair Value Of Derivative Instruments Included Within Consolidated Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Investment Holdings [Line Items]
Asset Derivatives Fair Value	$ 23.3	$ 11.9
Liability Derivatives Fair Value	11.0	10.3
Designated [Member]
Investment Holdings [Line Items]
Asset Derivatives Fair Value	19.0	7.7
Designated [Member] | Interest Rate Swaps [Member] | Other Assets [Member]
Investment Holdings [Line Items]
Asset Derivatives Fair Value	19.0	5.9
Designated [Member] | Interest Rate Swaps [Member] | Prepaid Expenses And Other Assets [Member]
Investment Holdings [Line Items]
Asset Derivatives Fair Value		1.8
Not Designated [Member]
Investment Holdings [Line Items]
Asset Derivatives Fair Value	4.3	4.2
Liability Derivatives Fair Value	11.0	10.3
Not Designated [Member] | Foreign Currency Forwards [Member] | Prepaid Expenses And Other Assets [Member]
Investment Holdings [Line Items]
Asset Derivatives Fair Value	4.3	4.2
Not Designated [Member] | Foreign Currency Forwards [Member] | Other Accrued Liabilities [Member]
Investment Holdings [Line Items]
Liability Derivatives Fair Value	$ 11.0	$ 10.3