Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 29, 2025	Jun. 28, 2026	Jun. 29, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 196.8	$ 468.3	$ 757.6	$ 807.2
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 44.9	$ 160.4	$ 135.5	$ 115.0
United States \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	22.80%	34.30%	17.90%	14.20%
Hong Kong
Disaggregation of Revenue [Line Items]
Revenue	$ 26.1	$ 88.8	$ 99.0	$ 116.4
Hong Kong \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	13.30%	19.00%	13.10%	14.40%
Europe
Disaggregation of Revenue [Line Items]
Revenue	$ 36.3	$ 79.2	$ 151.3	$ 295.2
Europe \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	18.40%	16.90%	20.00%	36.60%
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 49.1	$ 79.2	$ 104.2	$ 72.6
Asia Pacific \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	24.90%	16.90%	13.80%	9.00%
Singapore
Disaggregation of Revenue [Line Items]
Revenue	$ 7.6	$ 23.0	$ 104.1	$ 101.6
Singapore \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	3.90%	4.90%	13.70%	12.60%
Japan
Disaggregation of Revenue [Line Items]
Revenue	$ 13.3	$ 18.4	$ 91.1	$ 63.2
Japan \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	6.80%	3.90%	12.00%	7.80%
China
Disaggregation of Revenue [Line Items]
Revenue	$ 17.9	$ 14.7	$ 70.2	$ 41.5
China \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	9.10%	3.10%	9.30%	5.10%
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 1.6	$ 4.6	$ 2.2	$ 1.7
Other \| Geographic Concentration Risk \| Revenue from Contract with Customer
Disaggregation of Revenue [Line Items]
%	0.80%	1.00%	0.30%	0.30%