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Employee and Retiree Benefits - Postretirement Health Care and Deferred Compensation Benefits (Details) - USD ($)
$ in Millions
Aug. 31, 2024
Aug. 26, 2023
Retirement Benefits [Abstract]    
Non-qualified deferred compensation $ 5.2 $ 6.7
Supplemental executive retirement plan 0.9 1.2
Executive deferred compensation plan 2.2 1.8
Total deferred compensation benefits 8.3 9.7
Less current portion 1.7 1.8
Deferred compensation benefits, net of current portion $ 6.6 $ 7.9