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Share Capital - Preferred Shares (Details) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2018 CAD ($) $ / shares shares
Preferred shares |
Disclosure of classes of share capital [line items] |
Number of shares | shares | 92.2
Face amount | $ 2,305
Issued capital | $ 2,257
Series 1 |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 4.75%
Annual dividend per share | $ / shares | $ 1.19
Number of shares | shares | 16.0
Face amount | $ 400
Issued capital | $ 394
Series 2 |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 4.80%
Annual dividend per share | $ / shares | $ 1.20
Number of shares | shares | 13.0
Face amount | $ 325
Issued capital | $ 318
Series 3 |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 4.45%
Annual dividend per share | $ / shares | $ 1.11
Number of shares | shares | 10.0
Face amount | $ 250
Issued capital | $ 245
Series 4 |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 4.45%
Annual dividend per share | $ / shares | $ 1.11
Number of shares | shares | 12.0
Face amount | $ 300
Issued capital | $ 293
Series 5 |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 4.50%
Annual dividend per share | $ / shares | $ 1.13
Number of shares | shares | 10.0
Face amount | $ 250
Issued capital | $ 245
Series 8R |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 2.275%
Annual dividend per share | $ / shares | $ 0.57
Number of shares | shares | 5.2
Face amount | $ 130
Issued capital | $ 127
Annual dividend rate spread | 1.41%
Series 9QR |
Disclosure of classes of share capital [line items] |
Number of shares | shares | 6.0
Face amount | $ 150
Issued capital | $ 147
Annual dividend rate spread | 1.41%
Series 10R |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 2.842%
Annual dividend per share | $ / shares | $ 0.71
Number of shares | shares | 6.9
Face amount | $ 173
Issued capital | $ 169
Annual dividend rate spread | 2.17%
Series 11QR |
Disclosure of classes of share capital [line items] |
Number of shares | shares | 1.1
Face amount | $ 27
Issued capital | $ 26
Annual dividend rate spread | 2.17%
Series 12R |
Disclosure of classes of share capital [line items] |
Annual dividend rate | 3.806%
Annual dividend per share | $ / shares | $ 0.95
Number of shares | shares | 12.0
Face amount | $ 300
Issued capital | $ 293
Annual dividend rate spread | 2.73%
Series 8R, Series 10R and Series 12R |
Disclosure of classes of share capital [line items] |
Redemption price per share (in CAD per share) | $ / shares | $ 25.00
Series 9QR and Series 11QR- on redemption date and every five years thereafter |
Disclosure of classes of share capital [line items] |
Redemption price per share (in CAD per share) | $ / shares | 25.00
Preference Shares, Class A, Series 9QR and Series 11QR - on any other date |
Disclosure of classes of share capital [line items] |
Redemption price per share (in CAD per share) | $ / shares | $ 25.50

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