Derivatives - Schedule Of Change in Fair Value Of Derivative Contracts (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 25, 2021	Dec. 26, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ (19.2)	$ (18.7)
Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of realized loss recognized in income	(12.4)	(4.1)
Amount of unrealized loss recognized in income	(6.8)	(14.6)
Forward foreign currency contracts \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of realized loss recognized in income	(12.4)	(2.9)
Amount of unrealized loss recognized in income	(6.8)	(6.6)
Foreign currency option contracts \| Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of realized loss recognized in income	0.0	(1.2)
Amount of unrealized loss recognized in income	$ 0.0	$ (8.0)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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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 realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959

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-Publisher FASB
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-Topic 815
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-Paragraph 4C
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-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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