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Revenue - Disaggregation of Revenues by Geographic Region (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 30, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 1,164.9 | $ 1,045.1
Americas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,139.9 | 1,022.8
Asia-Pacific |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 15.4 | 11.5
Enterprise Talent Management |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 534.0 | 524.1
Enterprise Talent Management | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 510.9 | 504.9
Enterprise Talent Management | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 7.7 | 7.7
Enterprise Talent Management | Asia-Pacific |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 15.4 | 11.5
Science, Engineering & Technology |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 322.4 | 231.6
Science, Engineering & Technology | Americas |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 320.5 | 228.5
Science, Engineering & Technology | Europe |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 1.9 | $ 3.1

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