Summary of significant accounting policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 24, 2022
Accounting Policies [Line Items]
Service revenues	$ 122.6	$ 116.2	$ 140.4
Minimum
Accounting Policies [Line Items]
Product warranty term	1 year
Maximum
Accounting Policies [Line Items]
Product warranty term	5 years