Shareholders' Equity Shareholders' Equity Narrative details (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Jun. 29, 2013	Jun. 28, 2014 Share Based Incentive Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value	$ 28.01		$ 28.01		$ 23.01
Share-based Compensation	$ 2.2	$ 2.9	$ 8.5	$ 8.3
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term						10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			148,955	174,775