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Long-Term Debt (Details) - USD ($) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
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 |  |

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