Goodwill and Intangible Assets - Additional Information (Details) - Industrial Lasers & Systems $ in Millions	12 Months Ended
Oct. 03, 2020 USD ($)
Goodwill [Line Items]
Impairment charges	$ 327.2
Intangible Assets
Goodwill [Line Items]
Non-cash pre-tax charges	33.9
Property, Plant and Equipment
Goodwill [Line Items]
Non-cash pre-tax charges	85.6
Right-Of-Use Assets
Goodwill [Line Items]
Non-cash pre-tax charges	$ 1.8

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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