Commitments and contingencies (Details) ฿ in Millions, $ in Millions	Dec. 29, 2023 USD ($)	Dec. 29, 2023 THB (฿)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 THB (฿)
Commitments and Contingencies Disclosure [Line Items]
Outstanding bank guarantees given by banks on behalf of the company	$ 2.1	฿ 73.2	$ 1.5	฿ 53.0
Inventories
Commitments and Contingencies Disclosure [Line Items]
Outstanding commitment to third parties	1,000.0
Thailand
Commitments and Contingencies Disclosure [Line Items]
Outstanding commitment to third parties	$ 13.1