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Acquisitions - Narrative (Details) - USD ($) $ in Millions			3 Months Ended
	Mar. 07, 2022	Apr. 05, 2021	Apr. 03, 2022	Oct. 03, 2021	Apr. 04, 2021
Business Acquisition [Line Items]
Revenue			$ 1,296.4		$ 1,205.9
Earnings (loss) from operations			23.4		$ 10.6
RocketPower
Business Acquisition [Line Items]
Ownership percentage acquired	100.00%
Purchase price of acquisition	$ 59.3
Purchase price paid at closing	61.8
Additional consideration payable	1.1
Intangibles	15.8
Business acquisition, goodwill, expected tax deductible amount	28.0
Contingent consideration, maximum	31.8		31.8
Business Combination, Contingent Consideration, Liability	0.6
RocketPower | Customer Relationships
Business Acquisition [Line Items]
Intangibles	$ 7.5
Acquired finite-lived intangible assets, weighted average useful life	3 years
RocketPower | Noncompete Agreements
Business Acquisition [Line Items]
Intangibles	$ 1.7
Acquired finite-lived intangible assets, weighted average useful life	6 years
RocketPower | Trade Names
Business Acquisition [Line Items]
Intangibles	$ 6.6
Acquired finite-lived intangible assets, weighted average useful life	10 years
Softworld, Inc.
Business Acquisition [Line Items]
Ownership percentage acquired		100.00%
Purchase price of acquisition		$ 215.0
Purchase price paid at closing		220.4
Additional consideration payable		2.6
Net working capital adjustment		$ 6.0		$ 6.0
Revenue			37.9
Earnings (loss) from operations			$ 3.5

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