Employee Benefits - Multiemployer Pension Plans - Additional Information (Details) $ in Millions	12 Months Ended
	Aug. 31, 2023 USD ($) Plan	Aug. 31, 2022 USD ($)	Aug. 31, 2021 USD ($)
Multiemployer Plans [Line Items]
Number of multiemployer plans | Plan	14
Multiemployer Plans, Pension
Multiemployer Plans [Line Items]
Multiemployer plan, contributions by employer	$ 7	$ 7	$ 6
Steelworkers Western Independent Shops Pension Plan
Multiemployer Plans [Line Items]
Multiemployer plan, expiration date	Mar. 31, 2026
Multiemployer plan, contributions by employer	$ 4	$ 4	$ 4
Steelworkers Western Independent Shops Pension Plan | Minimum
Multiemployer Plans [Line Items]
Multiemployer plan rehabilitation plan contributions as a percent of total contributions	5.00%