Cash, cash equivalents and short-term investments - Additional Information (Details) - USD ($)	12 Months Ended
Jun. 26, 2026	Jun. 27, 2025
Cash, cash equivalents and marketable securities [Line Items]
Maturities period of marketable securities (or less)	3 months
Effective interest rate on short term bank deposits	3.70%	4.20%
Percentage of cash and cash equivalents held by parent company	83.00%	81.00%
Impairment loss on available-for-sale debt securities	$ 0	$ 0
Certificate of deposit and time deposits
Cash, cash equivalents and marketable securities [Line Items]
Debt securities, available-for-sale	33,200,000	125,700,000
Bank Time Deposits
Cash, cash equivalents and marketable securities [Line Items]
Debt securities, available-for-sale	$ 11,000,000.0	$ 20,000,000.0

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details