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Dividends (Detail)
$ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
$ / shares
Jun. 30, 2023
CAD ($)
$ / shares
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2022
CAD ($)
$ / shares
Jun. 30, 2023
USD ($)
$ / shares
Jun. 30, 2023
CAD ($)
$ / shares
Jun. 30, 2022
USD ($)
$ / shares
Jun. 30, 2022
CAD ($)
$ / shares
Dividends [Line Items]                
Dividend declared for common share holders | $ $ 75,379   $ 122,636   $ 150,765   $ 238,209  
Cash dividend declared per common share (USD per share) | $ / shares $ 0.1085   $ 0.1808   $ 0.2170   $ 0.3514  
Series A preferred shares                
Dividends [Line Items]                
Dividends declared for preferred share holders | $   $ 1,549   $ 1,549   $ 3,097   $ 3,097
Dividend declared per preferred share (CAD per share) | $ / shares   $ 0.3226   $ 0.3226   $ 0.6453   $ 0.6453
Series D preferred shares                
Dividends [Line Items]                
Dividends declared for preferred share holders | $   $ 1,273   $ 1,273   $ 2,546   $ 2,546
Dividend declared per preferred share (CAD per share) | $ / shares   $ 0.3182   $ 0.3182   $ 0.6364   $ 0.6364