CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Statement of Stockholders' Equity [Abstract] | ||||
| Dividends on common stock per share (in dollars per share) | $ 0.27 | $ 0.27 | $ 0.81 | $ 0.80 |
| Dividends on preferred stock per share (in dollars per share) | $ 12.1875 | $ 12.1875 | $ 36.5625 | $ 36.5625 |