Leases, Codification Topic 842 (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Leases [Abstract]
Finance Lease, Liability, Payments, Due Next Twelve Months	$ 8,517
Finance Lease, Liability, Payments, Due Year Two	6,979
Finance Lease, Liability, Payments, Due Year Three	4,217
Finance Lease, Liability, Payments, Due Year Four	2,797
Finance Lease, Liability, Payments, Due Year Five	2,387
Finance Lease, Liability, Payments, Due after Year Five	19,557
Finance Lease, Liability, Payment, Due	44,454
Finance Lease, Liability, Undiscounted Excess Amount	8,420
Operating Leases, Future Minimum Payments, Next Rolling Twelve Months	66,132
Operating Leases, Future Minimum Payments Receivable, in Four Years	31,782
Operating Leases, Future Minimum Payments Receivable, in Five Years	23,858
Operating Leases, Future Minimum Payments Receivable, Thereafter	86,654
Lessee, Operating Lease, Liability, Payments, Due	303,966
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	46,822
Operating Lease, Right-of-Use Asset	253,451	$ 257,834
Operating Lease, Expense	73,489	71,541
Finance Lease, Right-of-Use Asset, Amortization	8,065	8,205
Finance Lease, Interest Expense	938	1,060
Short-term Lease, Cost	16,955	15,991
Variable Lease, Cost	2,300	3,674
Lease, Cost	$ 101,747	$ 100,471
Operating Lease, Weighted Average Remaining Lease Term	7 years 10 months 24 days	8 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	10 years 3 months 18 days	6 years
Operating Lease, Weighted Average Discount Rate, Percent	3.01%	3.11%
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	3.33%
Operating Lease, Payments	$ 71,702	$ 71,003
Finance Lease, Interest Payment on Liability	938	1,060
Finance Lease, Principal Payments	8,235	7,949
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	43,991	56,461
Right of Use Asset Modification	27,664	7,333
2023	52,874
2024	42,666
Lessee, Lease, Description [Line Items]
Operating Lease, Expense	73,489	71,541
Finance Lease, Right-of-Use Asset, Amortization	8,065	8,205
Finance Lease, Interest Expense	938	1,060
Short-term Lease, Cost	16,955	15,991
Variable Lease, Cost	2,300	3,674
Lease, Cost	101,747	100,471
Operating Lease, Right-of-Use Asset	$ 253,451	$ 257,834
Operating Lease, Weighted Average Remaining Lease Term	7 years 10 months 24 days	8 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	10 years 3 months 18 days	6 years
Operating Lease, Weighted Average Discount Rate, Percent	3.01%	3.11%
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	3.33%
Operating Lease, Payments	$ 71,702	$ 71,003
Finance Lease, Interest Payment on Liability	938	1,060
Finance Lease, Principal Payments	8,235	7,949
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	43,991	56,461
Right of Use Asset Modification	27,664	7,333
Liabilities, Total
Leases [Abstract]
Operating Lease, Liability	257,144	260,891
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	257,144	260,891
Other Assets [Member]
Leases [Abstract]
Operating Lease, Right-of-Use Asset	253,451	257,834
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	253,451	257,834
Property, Plant and Equipment
Leases [Abstract]
Finance Lease, Right-of-Use Asset	48,625	44,860
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset	48,625	44,860
Long-term debt
Leases [Abstract]
Finance Lease, Liability	28,590	23,467
Lessee, Lease, Description [Line Items]
Finance Lease, Liability	28,590	23,467
Other Liabilities [Member]
Leases [Abstract]
Operating Lease, Liability	200,720	203,691
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	200,720	203,691
Accrued Liabilities [Member]
Leases [Abstract]
Operating Lease, Liability	56,424	57,200
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	56,424	57,200
current portion of long term debt
Leases [Abstract]
Finance Lease, Liability	7,444	7,993
Lessee, Lease, Description [Line Items]
Finance Lease, Liability	7,444	7,993
Total Long-term Debt
Leases [Abstract]
Finance Lease, Liability	36,034	31,460
Lessee, Lease, Description [Line Items]
Finance Lease, Liability	$ 36,034	$ 31,460