Significant Accounting Policies - Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Oct. 03, 2020	Sep. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Translation adjustment functional to reporting currency, net of tax	$ (25.1)	$ (34.4)
Deferred actuarial gain (loss) - pension plans	$ (0.5)
Available-for-sale equity securities, accumulated gross unrealized gain, before tax		$ (2.0)

Amount of cumulative translation gain (loss), after tax, from translating foreign currency financial statements into the reporting currency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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