Notes Payable and Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Aug. 31, 2022	Feb. 19, 2022	Aug. 31, 2021	Feb. 19, 2021
Debt Instrument [Line Items]
Notes payable	$ 606,719		$ 1,740,859
Total long-term debt	1,913,333
Debt Issuance Costs, Net	(3,535)		(4,090)
Other Long-Term Debt	4,314		7,974
Long-term Debt, Fair Value	1,958,814
Less current portion	290,605		38,450
Long-term portion	1,668,209		1,579,911
Long-term debt
Debt Instrument [Line Items]
Finance Lease, Liability	37,164		28,590
Total Long-term Debt
Debt Instrument [Line Items]
Finance Lease, Liability	$ 44,773		36,034
Unsecured debt | Minimum
Debt Instrument [Line Items]
Interest rate	4.00%
Unsecured debt | Maximum
Debt Instrument [Line Items]
Interest rate	9.00%
term loan
Debt Instrument [Line Items]
Interest rate	4.00%
Notes Payable, Other Payables [Member] | Notes Payable, Other Payables [Member] | Revolving credit facility
Debt Instrument [Line Items]
Notes payable	$ 459,398		864,147
Private placement, payable in its entirety in 2023 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	130,000
Total long-term debt	$ 130,000		130,000
Interest rate	4.67%
Private placement, payable in 2023 152k [Member] [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 152,000
Total long-term debt	$ 152,000		152,000
Interest rate	4.39%
Private placement, payable in 2025 80k [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 80,000
Total long-term debt	$ 80,000		80,000
Interest rate	3.85%
Private placement, payable in 2025 100k [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 100,000
Total long-term debt	$ 100,000		100,000
Interest rate	3.80%
Private placement, payable in 2025 150k [Member] [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 150,000
Total long-term debt	$ 150,000		150,000
Interest rate	4.58%
Private placement, payable in its entirety in 2026 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 80,000
Total long-term debt	$ 80,000		80,000
Interest rate	4.82%
Private placement, payable in its entirety in 2027 [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 58,000
Total long-term debt	$ 58,000		58,000
Interest rate	4.69%
Private placement, payable in its entirety in 2028 [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 95,000
Total long-term debt	$ 95,000		95,000
Interest rate	4.74%
Private placement, payable in its entirety in 2031 [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 100,000
Total long-term debt	$ 100,000		100,000
Interest rate	4.89%
Private placement, payable in its entirety 2033 [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 100,000
Total long-term debt	$ 100,000		100,000
Interest rate	4.71%
Private placement, payable in its entirety in 2036 [Member] | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 125,000
Total long-term debt	$ 125,000		125,000
Interest rate	5.40%
Private Placement [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,545,000		1,545,000
Term loans, 430K payable in 2025 [Member] | Unsecured debt
Debt Instrument [Line Items]
Total long-term debt		$ 366,000		$ 366,000
Other notes and contracts | Secured debt
Debt Instrument [Line Items]
Total long-term debt	2,262		33,443
us-gaap_DebtInstrumentName | us-gaap_LongtermDebtType
Debt Instrument [Line Items]
Long-term Debt, Fair Value			1,618,361
Less current portion			38,450
Unsecured term loans
Debt Instrument [Line Items]
Total long-term debt	366,000		0
Additional Private placement, payable in its entirety in 2027 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	95,000
Total long-term debt	$ 95,000		95,000
Interest rate	3.24%
Private placement, payable in its entirety in 2030 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 100,000
Total long-term debt	$ 100,000		100,000
Interest rate	3.48%
Private placement, payable in its entirety in 2032 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 65,000
Total long-term debt	$ 65,000		65,000
Interest rate	3.58%
Private placement, payable in its entirety in 2035 | Unsecured debt
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 115,000
Total long-term debt	$ 115,000		$ 115,000
Interest rate	3.73%