Income Taxes - Tax Benefits (Expense) (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 03, 2021	Apr. 04, 2020
Income Tax Disclosure [Abstract]
Restructuring charges and various other items	$ 5.2	$ 10.0
Valuation allowances on deferred tax assets	0.2	0.8
Share-based compensation	0.1	(0.2)
Income tax benefits (expense) related to significant discrete items	$ 5.5	$ 10.6

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Name:	us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration