SHAREHOLDERS' EQUITY, Common Stock Dividends Declared and Paid (Details) - $ / shares |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Equity [Abstract] | ||||
| Dividends per common share - declared (in usd per share) | $ 0.50 | $ 0.45 | $ 1.50 | $ 1.35 |
| Dividends per common share - paid (in usd per share) | $ 0.50 | $ 0.45 | $ 1.45 | $ 1.32 |
| Dividend payout ratio | 23.60% | 19.50% | 20.40% | 19.70% |