LEASES - Balance Sheet Components (Details) - USD ($) $ in Thousands	Feb. 28, 2021	Aug. 31, 2020
Leased Assets [Abstract]
Operating Lease, Right-of-Use Asset	$ 117,547	$ 114,905
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	52,325	50,642
Right-of-Use Asset	169,872	165,547
Lessee, Operating Lease, Description [Abstract]
Operating Lease, Liability, Current	$ 27,176	27,604
Operating lease liabilities, Current [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent	$ 98,807	95,810
Operating lease liabilities, Long-term [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Total	$ 125,983	123,414
Lessee, Finance Lease, Description [Abstract]
Finance Lease, Liability, Current	15,228	14,373
Finance Lease, Liability, Noncurrent	35,992	35,851
Finance Lease, Liability, Total	51,220	50,224
Lease Liability	$ 177,203	$ 173,638