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Fair value of financial instruments - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) $ in Thousands, $ in Millions	Sep. 25, 2026 USD ($)	Sep. 25, 2026 CAD ($)	Jun. 26, 2026 USD ($)	Jun. 26, 2026 CAD ($)
Assets
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Derivative assets - current portion	$ 31		$ 0
Total	374,654		$ 642,845
Liabilities
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]			Accrued expenses	Accrued expenses
Derivative liabilities - current portion	(5,511)		$ (9,084)
Total	(5,511)		(9,084)
Foreign currency forward contracts
Liabilities
Derivative assets, notional amount	17,000		1,000
Derivative liabilities, notional amount	275,000		279,000
Foreign currency forward contracts \| Canada, dollars
Liabilities
Derivative assets, notional amount				$ 0.3
Derivative liabilities, notional amount		$ 0.3
Cash equivalents
Assets
Marketable securities	11,196		114,501
Certificates of deposit and time deposits
Assets
Marketable securities	22,098		44,250
Corporate debt securities
Assets
Marketable securities	177,560		200,637
U.S. agency and U.S. treasury securities
Assets
Marketable securities	163,769		$ 283,457
Level 1
Assets
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]			Other current assets	Other current assets
Derivative assets - current portion	0		$ 0
Total	$ 0		0
Liabilities
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses	Accrued expenses
Derivative liabilities - current portion	$ 0		0
Total	0		0
Level 1 \| Cash equivalents
Assets
Marketable securities	0		0
Level 1 \| Certificates of deposit and time deposits
Assets
Marketable securities	0		0
Level 1 \| Corporate debt securities
Assets
Marketable securities	0		0
Level 1 \| U.S. agency and U.S. treasury securities
Assets
Marketable securities	0		0
Level 2
Assets
Derivative assets - current portion	31		0
Total	374,654		642,845
Liabilities
Derivative liabilities - current portion	(5,511)		(9,084)
Total	(5,511)		(9,084)
Level 2 \| Cash equivalents
Assets
Marketable securities	11,196		114,501
Level 2 \| Certificates of deposit and time deposits
Assets
Marketable securities	22,098		44,250
Level 2 \| Corporate debt securities
Assets
Marketable securities	177,560		200,637
Level 2 \| U.S. agency and U.S. treasury securities
Assets
Marketable securities	163,769		283,457
Level 3
Assets
Derivative assets - current portion	0		0
Total	0		0
Liabilities
Derivative liabilities - current portion	0		0
Total	0		0
Level 3 \| Cash equivalents
Assets
Marketable securities	0		0
Level 3 \| Certificates of deposit and time deposits
Assets
Marketable securities	0		0
Level 3 \| Corporate debt securities
Assets
Marketable securities	0		0
Level 3 \| U.S. agency and U.S. treasury securities
Assets
Marketable securities	$ 0		$ 0