Debt - Fair Value of Outstanding Debt Obligations, Gross (Details) - USD ($) $ in Millions	May 25, 2024	Aug. 26, 2023
Debt Instrument [Line Items]
Total debt, gross	$ 697.2	$ 640.2
ABL Credit Facility
Debt Instrument [Line Items]
Total debt, gross	0.0	0.0
Senior Secured Notes
Debt Instrument [Line Items]
Total debt, gross	295.0	291.2
2030 Convertible Notes
Debt Instrument [Line Items]
Total debt, gross	337.4	0.0
2025 Convertible Notes
Debt Instrument [Line Items]
Total debt, gross	$ 64.8	$ 349.0