Financial Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Apr. 04, 2015	Jan. 03, 2015
Derivatives, Fair Value
Asset	$ 10.0	$ 10.3
Liability	6.0	11.7
Long-term retirement benefits and other liabilities
Derivatives, Fair Value
Liability	0.2	0.2
Foreign exchange contracts | Other current assets
Derivatives, Fair Value
Asset	10.0	10.3
Foreign exchange contracts | Other accrued liabilities
Derivatives, Fair Value
Liability	5.0	10.5
Commodity contracts | Other accrued liabilities
Derivatives, Fair Value
Liability	$ 0.8	$ 1.0