Restructuring and Transformation Activities - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 29, 2024	Jun. 30, 2024	Mar. 31, 2024	Oct. 01, 2023	Jul. 02, 2023	Apr. 02, 2023	Sep. 29, 2024	Oct. 01, 2023
Restructuring Cost and Reserve [Line Items]
Severance Costs				$ 10.4	$ 1.1		$ 3.3
Other Restructuring Costs					5.6		3.1
Total	$ 0.0	$ 4.3	$ 2.3	15.4	$ 8.0	$ 6.6	$ 6.4
2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				10.4				$ 16.1
Other Restructuring Costs				5.0				11.5
Total				15.4				27.6
Corporate, Non-Segment | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				3.8				4.6
Other Restructuring Costs				4.5				10.6
Total				8.3				15.2
Professional & Industrial | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				3.6				6.6
Other Restructuring Costs				0.4				0.7
Total				4.0				7.3
Science, Engineering & Technology | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				0.6				1.0
Other Restructuring Costs				0.1				0.2
Total				0.7				1.2
Education | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				0.6				1.0
Other Restructuring Costs				0.0				0.0
Total				0.6				1.0
Outsourcing & Consulting | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				1.8				2.3
Other Restructuring Costs				0.0				0.0
Total				1.8				2.3
International | 2023 Actions
Restructuring Cost and Reserve [Line Items]
Severance Costs				0.0				0.6
Other Restructuring Costs				0.0				0.0
Total				$ 0.0				$ 0.6