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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 28, 2024 USD ($)	Sep. 27, 2025 USD ($)	Sep. 27, 2025 USD ($) Division	Sep. 27, 2025 USD ($) Segment	Sep. 28, 2024 USD ($)	Dec. 28, 2024 USD ($)	Oct. 18, 2024
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments			3	3
Accounts payable and accrued expenses and other current liabilities not yet presented for payment		$ 5	$ 5	$ 5		$ 16
Cash and cash equivalents		182	182	182		166
Restricted cash		5	5	5		5
Legal matter monetization	$ 70				$ 70
Revenue recognition included in short-term contract liabilities		13			$ 12
Accounts payable related to financing arrangements		31	31	31		24
Arising Ventures | Varis Division
Summary Of Significant Accounting Policies [Line Items]
Percentage of minority interest							19.90%
Non-US
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents		$ 62	$ 62	$ 62		$ 55

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