Other Assets - Rollforward of Capitalized Maintenance Activity (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
Aug. 31, 2024 |
|
| Capitalized Maintenance Expense [Roll Forward] | |||
| Balance at Beginning of Year | $ 400,267 | $ 223,119 | $ 289,377 |
| Cost Deferred | 67,658 | 271,857 | 21,909 |
| Amortization | (114,446) | (94,709) | (88,167) |
| Balance at End of Year | $ 353,479 | $ 400,267 | $ 223,119 |