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Debt - Carrying Amounts of the Liability and Equity Components (Details) - USD ($) $ in Millions	Sep. 27, 2025	Aug. 20, 2025	Jun. 28, 2025	Mar. 06, 2023	Sep. 29, 2021
Carrying amounts of the liability and equity components:
Short-term debt	$ 151.1		$ 246.2
Unamortized notes debt issuance cost	(1.8)		(1.4)
Long-term debt	640.5		396.3
Convertible Notes | 1.625% Senior Convertible Notes
Carrying amounts of the liability and equity components:
Principal amount	152.5		250.0
Unamortized debt discount	(1.2)		(3.3)
Unamortized debt issuance costs	$ (0.2)		(0.5)
Stated interest rate	1.625%	1.625%		1.625%
Convertible Notes | 0.625% Senior Convertible Notes
Carrying amounts of the liability and equity components:
Stated interest rate	0.625%	0.625%
Principal amount of notes	$ 250.0		0.0
Unamortized notes debt issuance cost	$ (6.0)		0.0
Convertible Notes | 3.75% Senior Notes
Carrying amounts of the liability and equity components:
Stated interest rate	3.75%
Senior Notes | 3.75% Senior Notes
Carrying amounts of the liability and equity components:
Stated interest rate	3.75%				3.75%
Principal amount of notes	$ 400.0		400.0
Unamortized notes debt issuance cost	$ (3.5)		$ (3.7)

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Amount of debt and lease obligation, classified as current.

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Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer.

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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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