Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Millions	Sep. 28, 2018	Jan. 01, 2018	Dec. 29, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred income taxes	$ 55.2		$ 59.1
Retained earnings	$ 1,247.2		$ 1,275.0
Accounting Standards Update 2016-16
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred income taxes		$ 3.2
Accounting Standards Update 2014-09 \| Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings		0.1
Retained Earnings \| Accounting Standards Update 2016-16
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative effect of new accounting principle		$ (3.2)