Leases, Balance Sheet Components (Details) - USD ($) $ in Thousands	Aug. 31, 2023	Aug. 31, 2022
Assets:
Operating assets	$ 160,767	$ 138,937
Finance assets	104,537	63,702
Total leased assets	265,304	202,639
Operating lease liabilities:
Current	34,445	31,792
Long-term	129,800	111,150
Total operating lease liabilities	164,245	142,942
Finance lease liabilities:
Current	28,037	19,340
Long-term	67,433	39,196
Total finance lease liabilities	95,470	58,536
Total lease liabilities	$ 259,715	$ 201,478
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other payables	Accrued expenses and other payables
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Current Maturities	Long-Term Debt, Current Maturities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt