Restructuring - Schedule of Restructuring and Related Costs (Details) $ in Millions	9 Months Ended
	Sep. 27, 2020 USD ($)
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	4.3
Science, Engineering & Technology
Restructuring Cost and Reserve [Line Items]
Lease Termination Costs	0.5
Severance Costs	0.0
Total	0.5
Education
Restructuring Cost and Reserve [Line Items]
Lease Termination Costs	0.1
Severance Costs	0.7
Total	0.8
International
Restructuring Cost and Reserve [Line Items]
Lease Termination Costs	0.7
Severance Costs	0.4
Total	1.1
Corporate
Restructuring Cost and Reserve [Line Items]
Lease Termination Costs	0.0
Severance Costs	1.7
Total	$ 1.7