Commitments and contingencies (Details) ฿ in Millions, ¥ in Millions, $ in Millions	Jun. 28, 2024 CNY (¥)	Jun. 28, 2024 USD ($)	Jun. 28, 2024 THB (฿)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 THB (฿)
Commitments and Contingencies Disclosure [Line Items]
Outstanding bank guarantees given by banks on behalf of the company		$ 2.0	฿ 73.2	$ 1.5	฿ 53.0
Casix
Commitments and Contingencies Disclosure [Line Items]
Loss contingency, damages sought | ¥	¥ 400
Inventories
Commitments and Contingencies Disclosure [Line Items]
Outstanding commitment to third parties		933.3
Thailand
Commitments and Contingencies Disclosure [Line Items]
Outstanding commitment to third parties		$ 21.9