Business segments and geographic information - Schedule of Total Revenues by Percentage from Individual Customers Representing Ten Percent or More of Total Revenues (Details) - Revenue - Customer Concentration Risk	12 Months Ended
	Jun. 27, 2025	Jun. 28, 2024	Jun. 30, 2023
NVIDIA Corporation
Revenue, Major Customer [Line Items]
Concentration of risk percentage	27.60%	35.10%	12.50%
Cisco Systems, Inc.
Revenue, Major Customer [Line Items]
Concentration of risk percentage	18.20%	13.40%	15.60%
Lumentum Operations LLC
Revenue, Major Customer [Line Items]
Concentration of risk percentage			15.40%
Infinera Corporation
Revenue, Major Customer [Line Items]
Concentration of risk percentage			12.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.