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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill - Changes in the Net Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Mar. 29, 2020	Oct. 03, 2021	Sep. 27, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance				$ 3.5
Additions to Goodwill				111.3
Impairment Adjustments	$ 0.0	$ 0.0	$ (147.7)	0.0	$ (147.7)
Goodwill, ending balance	114.8			114.8
Science, Engineering & Technology
Goodwill [Roll Forward]
Goodwill, beginning balance				0.0
Additions to Goodwill				111.3
Impairment Adjustments				0.0
Goodwill, ending balance	111.3			111.3
Education
Goodwill [Roll Forward]
Goodwill, beginning balance				3.5
Additions to Goodwill				0.0
Impairment Adjustments				0.0
Goodwill, ending balance	$ 3.5			$ 3.5