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Fair value of obligations measured on a recurring basis.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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No definition available.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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- References

No definition available.

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Fair Value Measurements - Fair Value Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Assets:
Assets measured at fair value on a recurring basis	$ 1.7	$ 11.2
Liabilities:
Liabilities measured at fair value on a recurring basis	94.4	113.0
Fair value adjustments	(6.7)	0.3	$ 1.7
Contingent consideration recorded at acquisition	0.0	82.7	$ 0.0
Quoted Prices in Active Market for Identical Assets (Level 1)
Assets:
Assets measured at fair value on a recurring basis	0.0	0.0
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	0.0
Significant Other Observable Inputs (Level 2)
Assets:
Assets measured at fair value on a recurring basis	1.7	11.2
Liabilities:
Liabilities measured at fair value on a recurring basis	19.3	31.2
Significant Unobservable Inputs (Level 3)
Assets:
Assets measured at fair value on a recurring basis	0.0	0.0
Liabilities:
Liabilities measured at fair value on a recurring basis	75.1	81.8
Interest Rate Swap [Member]
Assets:
Assets measured at fair value on a recurring basis	18.7	31.2
Interest Rate Swap [Member] \| Quoted Prices in Active Market for Identical Assets (Level 1)
Assets:
Assets measured at fair value on a recurring basis	0.0
Interest Rate Swap [Member] \| Significant Other Observable Inputs (Level 2)
Assets:
Assets measured at fair value on a recurring basis	18.7
Interest Rate Swap [Member] \| Significant Unobservable Inputs (Level 3)
Assets:
Assets measured at fair value on a recurring basis	0.0
Stock Options
Assets:
Forward foreign currency contracts		10.1
Stock Options \| Assets \| Quoted Prices in Active Market for Identical Assets (Level 1)
Assets:
Forward foreign currency contracts		0.0
Stock Options \| Assets \| Significant Other Observable Inputs (Level 2)
Assets:
Forward foreign currency contracts		10.1
Stock Options \| Assets \| Significant Unobservable Inputs (Level 3)
Assets:
Forward foreign currency contracts		0.0
Forward foreign currency contracts \| Assets
Assets:
Forward foreign currency contracts	1.7	1.1
Forward foreign currency contracts \| Assets \| Quoted Prices in Active Market for Identical Assets (Level 1)
Assets:
Forward foreign currency contracts	0.0	0.0
Forward foreign currency contracts \| Assets \| Significant Other Observable Inputs (Level 2)
Assets:
Forward foreign currency contracts	1.7	1.1
Forward foreign currency contracts \| Assets \| Significant Unobservable Inputs (Level 3)
Assets:
Forward foreign currency contracts	0.0	0.0
Forward foreign currency contracts \| Liability
Liabilities:
Liabilities measured at fair value on a recurring basis	0.6
Forward foreign currency contracts \| Liability \| Quoted Prices in Active Market for Identical Assets (Level 1)
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0
Forward foreign currency contracts \| Liability \| Significant Other Observable Inputs (Level 2)
Liabilities:
Liabilities measured at fair value on a recurring basis	0.6
Forward foreign currency contracts \| Liability \| Significant Unobservable Inputs (Level 3)
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0
contingent consideration
Liabilities:
Liabilities measured at fair value on a recurring basis	75.1
contingent consideration \| Quoted Prices in Active Market for Identical Assets (Level 1)
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	0.0
contingent consideration \| Significant Other Observable Inputs (Level 2)
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	0.0
contingent consideration \| Significant Unobservable Inputs (Level 3)
Liabilities:
Liabilities measured at fair value on a recurring basis	$ 75.1	$ 81.8