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Dividends (Detail) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) $ / shares | Dec. 31, 2023 CAD ($) $ / shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2022 CAD ($) $ / shares
Dividends [Line Items] |  |  |  |
Dividend declared for common share holders | $ | $ 301,771 |  | $ 486,043 |
Cash dividend declared per common share (USD per share) | $ 0.4340 |  | $ 0.7130 |
Dividend declared per preferred share (CAD per share) |  | $ 1.6440 |  |
Series A Shares |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends declared for preferred share holders | $ |  | $ 6,194 |  | $ 6,194
Dividend declared per preferred share (CAD per share) |  | $ 1.2905 |  | $ 1.2905
Series D Shares |  |  |  |
Dividends [Line Items] |  |  |  |
Dividends declared for preferred share holders | $ |  | $ 5,091 |  | $ 5,091
Dividend declared per preferred share (CAD per share) |  | $ 1.2728 |  | $ 1.2728

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