Segment Disclosures - Depreciation and Amortization Expense Included in SG&A Expenses (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 27, 2026	Sep. 28, 2025	Sep. 27, 2026	Sep. 28, 2025
Segment Reporting [Line Items]
Depreciation and amortization:	$ (15.2)	$ (12.6)	$ (38.7)	$ (37.9)
Enterprise Talent Management
Segment Reporting [Line Items]
Depreciation and amortization:	4.2	2.5	8.8	8.4
Science, Engineering & Technology
Segment Reporting [Line Items]
Depreciation and amortization:	8.8	8.0	23.4	23.2
Education
Segment Reporting [Line Items]
Depreciation and amortization:	$ 2.2	$ 2.1	$ 6.5	$ 6.3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details