Business segments and geographic information - Schedule of Accounts Receivable from Individual Customers Representing Ten Percent or More of Accounts Receivable (Details) - Accounts Receivable - Customer Concentration Risk	12 Months Ended
Jun. 26, 2026	Jun. 27, 2025
Cisco Systems, Inc.
Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]
Concentration of risk percentage	16.10%	13.70%
Nokia Corporation
Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]
Concentration of risk percentage	14.20%	12.00%
Amazon.com, Inc.
Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]
Concentration of risk percentage	11.50%
NVIDIA Corporation
Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]
Concentration of risk percentage		25.50%

Business segments and geographic information - Schedule of Accounts Receivable from Individual Customers Representing Ten Percent or More of Accounts Receivable (Details) - Accounts Receivable - Customer Concentration Risk

12 Months Ended

Jun. 26, 2026

Jun. 27, 2025

Cisco Systems, Inc.

Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]

Concentration of risk percentage

16.10%

13.70%

Nokia Corporation

Schedule Of Entity Wide Accounts Receivable By Major Customers By Reporting Segments [Line Items]

Concentration of risk percentage

14.20%