XML 98 R72.htm IDEA: XBRL DOCUMENT v3.23.3
Per Share Amounts - Preferred Share Dividends (Details) - CAD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Earnings per share [line items]        
Total Preferred Share Dividends Declared $ 9 $ 9 $ 27 $ 26
Series 1 First Preferred Shares        
Earnings per share [line items]        
Total Preferred Share Dividends Declared 2 1 5 5
Series 2 First Preferred Shares        
Earnings per share [line items]        
Total Preferred Share Dividends Declared 1 1 2 1
Series 3 First Preferred Shares        
Earnings per share [line items]        
Total Preferred Share Dividends Declared 3 3 9 9
Series 5 First Preferred Shares        
Earnings per share [line items]        
Total Preferred Share Dividends Declared 2 3 7 7
Series 7 First Preferred Shares        
Earnings per share [line items]        
Total Preferred Share Dividends Declared $ 1 $ 1 $ 4 $ 4