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Income Taxes - Differences Between Income Taxes From Continuing Operations and U.S. Statutory Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax based on statutory rate	$ 24.4	$ (2.0)	$ 28.6
State income taxes, net of federal benefit	1.1	3.2	1.6
Foreign tax rate differential	4.6	(8.3)	(1.5)
General business credits	(16.7)	(22.6)	(18.1)
Life insurance cash surrender value	(6.5)	2.1	(7.4)
Foreign items	0.8	1.9	(1.3)
GILTI, net of foreign tax credit	0.5	0.5	0.0
Foreign-derived intangible income	(0.9)	(0.9)	0.0
Foreign business taxes	3.8	4.2	4.0
Non-deductible expenses	0.7	2.6	1.3
Tax law change	(0.2)	(0.5)	13.9
Change in deferred tax realizability	(10.6)	(4.3)	(7.8)
Stock compensation	(0.6)	(3.0)	(0.7)
Other, net	0.0	0.0	0.2
Total provision	$ 0.4	$ (27.1)	$ 12.8

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Effective Income Tax Rate Reconciliation, Global Intangible Low-Taxed Income, Net of Foreign Tax Credit, Amount

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates attributable to foreign business taxes classified as income taxes which are based on revenue or receipts reduced by one or more category of expense.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to changes in the enacted income tax laws in the period.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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