Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Long-Term Debt (Details) - USD ($)	1 Months Ended		3 Months Ended
Long-Term Debt (Details) - USD ($)	Nov. 30, 2021	Aug. 31, 2021	Oct. 31, 2021	Oct. 31, 2020	Jul. 31, 2021
Debt Instrument
Proceeds from long-term debt			$ 124,500,000	$ 0
Unsecured Debt
Debt Instrument
Debt instrument amount					$ 150,000,000
2.5% 10 Year Note Due 2031 \| Unsecured Debt
Debt Instrument
Proceeds from long-term debt		$ 100,000,000
Debt instrument, term		10 years
Fixed interest rate		2.50%
2.12% 7 Year Note Due 2028 \| Unsecured Debt \| Subsequent Event
Debt Instrument
Proceeds from long-term debt	$ 50,000,000
Debt instrument, term	7 years
Fixed interest rate	2.12%
Unsecured revolving credit facility \| Unsecured revolving credit facility
Debt Instrument
Remaining borrowing capacity			427,500,000
Maximum borrowing capacity			$ 500,000,000