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Segment Information - Summary of Operations by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Gross profit	$ 95.3	$ 104.3	$ 370.1	$ 339.8
Operating Segments
Segment Reporting Information [Line Items]
Customer revenue	396.6	390.1	1,244.0	1,207.7
Gross profit	102.7	107.3	373.8	339.7
Operating Segments | DWS
Segment Reporting Information [Line Items]
Customer revenue	140.9	130.1	406.9	382.1
Gross profit	20.9	19.7	54.9	52.2
Operating Segments | CA&I
Segment Reporting Information [Line Items]
Customer revenue	133.5	122.3	392.1	381.5
Gross profit	20.4	6.8	59.2	20.9
Operating Segments | ECS
Segment Reporting Information [Line Items]
Customer revenue	122.2	137.7	445.0	444.1
Gross profit	$ 61.4	$ 80.8	$ 259.7	$ 266.6

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