XML 200 R139.htm IDEA: XBRL DOCUMENT
v3.19.1

Share capital - Narrative (Details) $ in Millions |  |  |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 29, 2018 | Mar. 01, 2018 shares | Feb. 28, 2018 | Mar. 31, 2018 CAD ($) shares | Dec. 31, 2018 vote shares | Dec. 31, 2017 shares | Dec. 31, 2016 shares
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) |  |  |  |  | 3,085,697 |  |  |
Repurchase of common shares | $ |  |  |  |  | $ 175 |  |  |
Issued capital |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Repurchase of common shares | $ |  |  |  |  | 69 |  |  |
Contributed surplus |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Repurchase of common shares | $ |  |  |  |  | 3 |  |  |
Deficit |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Repurchase of common shares | $ |  |  |  |  | $ 103 |  |  |
Preferred shares |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Special circumstance vote per share | vote |  |  |  |  |  | 1 |  |
Share conversion ratio |  |  |  |  |  | 1 |  |
Series R |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 4.13% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 8,000,000 |  |
Series T |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 3.019% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 4,486,552 |  |
Series Z |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 3.904% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 1,918,509 |  |
Series AA |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 3.61% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 11,398,396 |  |
Series AC |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  | 5 years |  |  | 5 years |  |
Share conversion ratio |  |  | 1 |  |  |  |  |
Annual dividend rate |  |  | 4.38% | 3.55% |  | 4.38% |  |
Shares converted (in shares) |  |  | 397,181 |  |  |  |  |
Number of shares outstanding (in shares) |  |  | 5,069,935 |  |  | 5,069,935 |  |
Series AF |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 3.11% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 6,707,867 |  |
Series AG |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 2.80% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 4,985,351 |  |
Series AI |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 2.75% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 5,949,884 |  |
Series AK |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 2.954% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 22,745,921 |  |
Series AM |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 2.764% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 9,546,615 |  |
Series AO |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term |  |  |  |  |  | 5 years |  |
Annual dividend rate |  |  |  |  |  | 4.26% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 4,600,000 |  |
Series AQ |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Dividend rate reset term | 5 years |  |  |  |  | 5 years |  |
Annual dividend rate | 4.812% | 4.25% |  |  |  | 4.812% |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 9,200,000 |  |
Series AD |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Share conversion ratio |  |  | 1 |  |  |  |  |
Shares converted (in shares) |  |  | 5,356,937 |  |  |  |  |
Number of shares outstanding (in shares) |  |  | 14,930,065 |  |  | 14,930,065 |  |
Class B | Issued capital |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |
Number of shares outstanding (in shares) |  |  |  |  |  | 0 | 0 | 0

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