Segment Disclosures - Depreciation and Amortization Expense Included in SG&A Expenses (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 02, 2023	Apr. 03, 2022
Earnings (loss) from Operations
Depreciation and amortization	$ 8.4	$ 7.5
Professional & Industrial
Earnings (loss) from Operations
Depreciation and amortization	0.8	1.1
Science, Engineering & Technology
Earnings (loss) from Operations
Depreciation and amortization	3.2	3.1
Education
Earnings (loss) from Operations
Depreciation and amortization	1.5	0.8
Outsourcing & Consulting
Earnings (loss) from Operations
Depreciation and amortization	1.0	0.2
International
Earnings (loss) from Operations
Depreciation and amortization	$ 0.4	$ 0.5

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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