Income Taxes Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018 USD ($)	Jun. 30, 2017	Jun. 29, 2018 USD ($)	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	17.10%	26.30%	16.80%	26.40%
U.S. federal statutory rate			21.00%	35.00%
TCJA adjustments	$ 1.9		$ 6.1
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Adjustment, Income Tax Rate Impact	50		90
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Assets and Liabilities, Provisional Income Tax Expense			$ 15.1
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability			1.9
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Foreign Tax Credit, Provisional Liability			$ 10.9