Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Deferred tax liabilities, net	$ (113.5)	$ (114.1)
Deferred tax asset benefit	58.4	34.2
Deferred tax liabilities	(171.9)	(148.3)
Unrecognized tax benefits	6.9	6.5	$ 6.7	$ 10.0
Unrecognized tax benefits, recognized interest income (expense)	0.5	0.2	(0.2)
Unrecognized tax benefits, accrued interest	2.3	1.9	$ 1.7
Unrecognized tax benefits including accrued that could change in coming year	0.4
Net operating losses	$ 35.4	$ 13.1
Tax effected net operating losses, expiration period	15 years	15 years
Change in valuation allowance	$ 12.9	$ 4.9
Income tax holiday, amount of decrease in provision for income taxes	3.9
Undistributed earnings of foreign subsidiaries	123.2
Deferred tax liability for local withholding taxes, not recorded	$ 19.1