Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	21.40%	19.20%	26.30%	24.60%
Effective income tax rate reconciliation, other tax benefit	$ 7.4		$ 8.5	$ 8.2
Effective income tax rate reconciliation, other tax expense		$ 6.1
Effective income tax rate reconciliation, excluding tax credits	33.50%	28.10%	30.80%	28.50%
Decrease in unrecognized tax benefits is reasonably possible	$ 3.6		$ 3.6
Unrecognized tax benefits, tax expense offset against reversal of additional paid-In-capital	$ 3.1		$ 3.1