Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Sep. 29, 2025	Jun. 28, 2026	Jun. 28, 2026	Jun. 29, 2025	Jun. 30, 2024	Jun. 25, 2023
Operating Loss Carryforwards [Line Items]
Valuation allowance of deferred tax assets		$ 930.6	$ 930.6	$ 1,041.4
Federal net operating loss carryforward		615.7	615.7
State net operating loss carryforwards		198.1	198.1
Foreign net operating loss carryforward		2.2	2.2
Debtor reorganization items, cancellation of debt income			3,400.0
Reduction in operating loss		3,400.0	3,400.0
Deduction due to acceleration of deferred tax assets			266.7
Unrecognized tax benefits	$ 8.3	8.1	8.1	8.3	$ 9.4	$ 9.8
Increase (decrease) in unrecognized tax benefits			0.1
Expiration of statute of limitations for assessment of taxes	0.0	0.3		0.4	2.0
Estimated change in gross unrecognized tax benefits		0.5	0.5
Interest and penalties expense related to unrecognized tax benefits (less than)	$ 0.1	0.1		0.1	$ 0.1
Undistributed earnings of foreign subsidiaries		32.1	32.1
Undistributed earnings of foreign subsidiaries not expected to be repatriated		6.8	6.8
Foreign income taxes incurred		1.0	1.0
Undistributed foreign earnings on which income taxes have not been provided		25.3	25.3
Income tax expense (benefit) if foreign earnings are repatriated			2.6
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Valuation allowance of deferred tax assets		930.4	930.4	$ 1,041.3
Decrease in valuation allowance of operating loss carryforward			(110.9)
Tax credit carryforward		118.9	118.9
Income Tax Jurisdiction, Domestic State and Local
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		0.7	0.7
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Valuation allowance of net operating loss carryforwards		$ 0.4	$ 0.4