Financial Instruments - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Increase in fair value: | ||||
| Interest rate agreements | $ 0 | $ 5,359 | $ 0 | $ 23,400 |
| Recognition of gains in earnings due to settlements: | ||||
| Interest rate agreements | (4,780) | (3,981) | (14,366) | (11,121) |
| Total other comprehensive income (loss) from hedging, net of tax | $ (4,780) | $ 1,378 | $ (14,366) | $ 12,279 |