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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Income Taxes [Line Items]
Income tax expense (benefit)	$ (2.6)	$ 0.9	$ 7.9	$ (35.3)
United Kingdom
Income Taxes [Line Items]
Income tax expense (benefit)	(5.2)
Brazil
Income Taxes [Line Items]
Income tax expense (benefit)		(7.7)
Mexico
Income Taxes [Line Items]
Deferred tax asset	4.4		4.4
Persol Holdings
Income Taxes [Line Items]
Income tax expense (benefit)	$ 1.9	$ 9.0	$ 11.1	(14.8)
Goodwill
Income Taxes [Line Items]
Income tax expense (benefit)				$ (23.0)

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[Line Items] for Income Taxes [Table]

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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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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