Segment Disclosures - Depreciation and Amortization Expense Included in SG&A Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Earnings (loss) from Operations
Depreciation and amortization			$ 24.7	$ 22.0
Professional & Industrial
Earnings (loss) from Operations
Depreciation and amortization	$ 0.8	$ 1.3	2.9	4.1
Science, Engineering & Technology
Earnings (loss) from Operations
Depreciation and amortization	3.2	3.2	9.5	7.5
Education
Earnings (loss) from Operations
Depreciation and amortization	1.6	0.9	3.7	2.8
Outsourcing & Consulting
Earnings (loss) from Operations
Depreciation and amortization	1.0	0.1	2.2	0.5
International
Earnings (loss) from Operations
Depreciation and amortization	$ 0.3	$ 0.5	$ 1.3	$ 1.5