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Fair Value Measurements (Tables)

12 Months Ended

Sep. 28, 2025

Sep. 29, 2024

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on A Recurring Basis

Assets and Liabilities Measured at Fair Value on a Recurring Basis (in millions):

									Fair Value Measurements at Reporting Date Using
			Balance at September 28, 2025						Quoted Prices in Active Markets for  Identical Assets (Level 1)						Significant  Other Observable  Inputs (Level 2)						Significant Unobservable  Inputs (Level 3)
Assets:
Cash and cash equivalents			$	3,219.8					$	3,219.8					$	—					$	—
Short-term investments:
Available-for-sale debt securities:
Corporate debt securities			67.8						—						55.9						11.9
Mortgage and other asset-backed securities			0.4						—						0.4						—
State and local government obligations			1.1						—						1.1						—
U.S. government treasury securities			82.6						82.6						—						—
Total available-for-sale debt securities			151.9						82.6						57.4						11.9
Marketable equity securities			95.3						95.3						—						—
Total short-term investments			247.2						177.9						57.4						11.9
Prepaid expenses and other current assets:
Derivative assets			15.9						—						15.9						—
Long-term investments:
Available-for-sale debt securities:
Corporate debt securities			132.2						—						105.5						26.7
Mortgage and other asset-backed securities			75.7						—						75.7						—
State and local government obligations			2.7						—						2.7						—
U.S. government treasury securities			36.3						36.3						—						—
Total Available-for-sale debt securities			246.9						36.3						183.9						26.7
Total long-term investments			246.9						36.3						183.9						26.7
Other long-term assets:
Derivative assets			278.6						—						278.6						—
Total assets			$	4,008.4					$	3,434.0					$	535.8					$	38.6
Liabilities:
Accrued liabilities:
Derivative liabilities			$	7.1					$	—					$	7.1					$	—
Other long-term liabilities:
Derivative liabilities			20.9						—						20.9						—
Total liabilities			$	28.0					$	—					$	28.0					$	—

									Fair Value Measurements at Reporting Date Using
			Balance at September 29, 2024						Quoted Prices in Active Markets for  Identical Assets (Level 1)						Significant  Other Observable  Inputs (Level 2)						Significant Unobservable  Inputs (Level 3)
Assets:
Cash and cash equivalents			$	3,286.2					$	3,286.2					$	—					$	—
Short-term investments:
Available-for-sale debt securities
Corporate debt securities			51.8						—						51.8						—
Foreign corporate bonds			0.2						—						0.2						—
Mortgage and other asset-backed securities			0.4						—						0.4						—
State and local government obligations			1.4						—						1.4						—
U.S. government treasury securities			36.9						36.9						—						—
Total available-for-sale debt securities			90.7						36.9						53.8						—
Structured deposits			84.1						—						84.1						—
Marketable equity securities			82.2						82.2						—						—
Total short-term investments			257.0						119.1						137.9						—
Prepaid expenses and other current assets:
Derivative assets			8.7						—						8.7						—
Long-term investments:
Available-for-sale debt securities
Corporate debt securities			112.8						—						101.8						11.0
Mortgage and other asset-backed securities			64.4						—						64.4						—
State and local government obligations			3.7						—						3.7						—
U.S. government treasury securities			94.9						94.9						—						—
Total Available-for-sale debt securities			275.8						94.9						169.9						11.0
Structured Deposit			0.2						—						0.2						—
Total long-term investments			276.0						94.9						170.1						11.0
Other long-term assets:
Derivative assets			179.1						—						179.1						—
Total assets			$	4,007.0					$	3,500.2					$	495.8					$	11.0
Liabilities:
Accrued liabilities:
Derivative liabilities			$	29.2					$	—					$	29.2					$	—
Other long-term liabilities:
Derivative liabilities			56.7						—						56.7						—
Total liabilities			$	85.9					$	—					$	85.9					$	—

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- References

No definition available.

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

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