Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 28, 2015	Mar. 22, 2014	Jan. 03, 2015
Foreign exchange contracts [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 136.8	$ 97.0	$ 141.6
Maximum remaining maturity of foreign currency derivatives	370 days	308 days	336 days
Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 386.6	$ 443.6	$ 405.4