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Basis of Presentation and Significant Accounting Policies - Summary Of Transactions Related Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Apr. 04, 2021	Mar. 29, 2020
Business Acquisition [Line Items]
Total transaction-related charges	$ 9.7	$ 7.2	$ 30.3	$ 11.3
Armitage acquisition and integration
Business Acquisition [Line Items]
Total transaction-related charges	2.0	0.0	6.8	0.0
Omega Sea acquisition and integration
Business Acquisition [Line Items]
Total transaction-related charges	0.1	1.3	0.2	1.3
Other
Business Acquisition [Line Items]
Total transaction-related charges	4.7	1.7	15.8	3.2
Coevorden operations divestiture and separation
Business Acquisition [Line Items]
Total transaction-related charges	2.0	1.5	4.8	1.7
GBL divestiture and separation
Business Acquisition [Line Items]
Total transaction-related charges	$ 0.9	$ 2.7	$ 2.7	$ 5.1

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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