Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Oct. 03, 2021	Jul. 04, 2021	Sep. 27, 2020	Jun. 28, 2020	Oct. 03, 2021	Sep. 27, 2020
Income Taxes [Line Items]
Income tax expense (benefit)	$ 11.1		$ (1.2)		$ 19.0	$ (36.5)
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	4.3				4.3
Persol Holdings
Income Taxes [Line Items]
Income tax expense (benefit)	$ 10.9		$ 5.2		$ 22.0	(9.6)
Goodwill
Income Taxes [Line Items]
Income tax expense (benefit)						$ (23.0)