EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE - Schedule of Dividends Per Share (Parenthetical) (Details) - $ / shares |
3 Months Ended | 9 Months Ended |
|---|---|---|
Dec. 31, 2025 |
Sep. 30, 2026 |
|
| Series G Preferred Stock [Member] | ||
| Dividends Payable [Line Items] | ||
| Preferred shares, dividend declared per share (in Canadian dollars per share) | $ 0.30247 | $ 0.29918 |
| Series I Preferred Stock [Member] | ||
| Dividends Payable [Line Items] | ||
| Preferred shares, dividend declared per share (in Canadian dollars per share) | 0.27789 | 0.27487 |
| Series 4 Preferred Stock [Member] | ||
| Dividends Payable [Line Items] | ||
| Preferred shares, dividend declared per share (in Canadian dollars per share) | $ 0.29427 | $ 0.29108 |