IMPAIRMENT, RESTRUCTURING AND OTHER - Impairment, Restructuring and Other Charges (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (recoveries), net	$ 2.5	$ 0.3	$ 3.2	$ (2.2)
Impairment, restructuring and other charges from continuing operations	14.9	3.7	24.6	1.4
Restructuring and other charges (recoveries), net, from discontinued operations	0.0	(3.1)	0.0	(3.1)
Total impairment, restructuring and other charges (recoveries)	14.9	0.6	24.6	(1.7)
COVID-19 related costs \| Cost of sales—impairment, restructuring and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	12.3	3.1	21.0	3.1
COVID-19 related costs \| Operating expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	2.6	0.7	3.2	0.7
Restructuring and other charges \| Cost of sales—impairment, restructuring and other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (recoveries), net	0.1	0.3	0.4	0.5
Restructuring and other charges \| Operating expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges (recoveries), net	$ (0.1)	$ (0.4)	$ 0.0	$ (2.9)

Impairment, Restructuring, And Other (Recoveries) Charges, Continuing Operations

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructuring pursuant to an authorized plan, excluding asset retirement obligations along with other related charges. These charges are recorded within the results from discontinued operations.

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The aggregate costs and expenses related to impairment restructuring and other charges (recoveries). Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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