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Restructuring - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2019 | Sep. 27, 2020
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | $ 4.8
Severance Costs |  | 3.6
Total |  | 8.4
Professional & Industrial |  |
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | 3.5
Severance Costs |  | 0.8
Total | $ 4.4 | 4.3
Science, Engineering & Technology |  |
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | 0.5
Severance Costs |  | 0.0
Total | 0.5 | 0.5
Education |  |
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | 0.1
Severance Costs |  | 0.7
Total | 0.9 | 0.8
International |  |
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | 0.7
Severance Costs |  | 0.4
Total | 1.1 | 1.1
Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Lease Termination Costs |  | 0.0
Severance Costs |  | 1.7
Total | $ 1.8 | $ 1.7

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