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Share Capital - Range of Exercise Prices of Stock Options (Details) shares in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 shares $ / shares | Dec. 31, 2020 shares $ / shares | Dec. 31, 2019 shares $ / shares
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 38,327 | 48,656 | 47,646
Weighted average remaining term (years) | 3 years 21 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 35.88 | $ 37.53 | $ 38.04
Stock options exercisable (in shares) | shares | 7,841 | 17,970 |
Weighted average exercise price, options exercisable (in CAD per share) | $ 39.19 | $ 39.59 |
$20.76 - $24.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 2,697 |  |
Weighted average remaining term (years) | 3 years 3 months 21 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 20.95 |  |
Stock options exercisable (in shares) | shares | 566 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 20.76 |  |
$20.76 - $24.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 20.76 |  |
$20.76 - $24.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 24.99 |  |
$25.00 - $29.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 7,526 |  |
Weighted average remaining term (years) | 4 years 2 months 15 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 29.21 |  |
Stock options exercisable (in shares) | shares | 1 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 28.63 |  |
$25.00 - $29.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 25.00 |  |
$25.00 - $29.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 29.99 |  |
$30.00 - $34.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 2,726 |  |
Weighted average remaining term (years) | 3 years 6 months 29 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 32.37 |  |
Stock options exercisable (in shares) | shares | 219 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 32.56 |  |
$30.00 - $34.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 30.00 |  |
$30.00 - $34.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 34.99 |  |
$35.00 - $39.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 15,227 |  |
Weighted average remaining term (years) | 2 years 7 months 2 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 37.46 |  |
Stock options exercisable (in shares) | shares | 3,148 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 37.34 |  |
$35.00 - $39.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 35.00 |  |
$35.00 - $39.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 39.99 |  |
$40.00 - $44.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 7,679 |  |
Weighted average remaining term (years) | 2 years 8 months 26 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 42.04 |  |
Stock options exercisable (in shares) | shares | 2,894 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 43.23 |  |
$40.00 - $44.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 40.00 |  |
$40.00 - $44.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 44.99 |  |
$45.00 - $49.99 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 1,839 |  |
Weighted average remaining term (years) | 1 year 5 months 1 day |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 45.19 |  |
Stock options exercisable (in shares) | shares | 1,013 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 45.14 |  |
$45.00 - $49.99 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | 45.00 |  |
$45.00 - $49.99 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 49.99 |  |
$50.00 - $54.24 |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Stock options outstanding (in shares) | shares | 633 |  |
Weighted average remaining term (years) | 5 years 9 months 29 days |  |
Weighted average exercise price, options outstanding (in CAD per share) | $ 54.24 |  |
Stock options exercisable (in shares) | shares | 0 |  |
Weighted average exercise price, options exercisable (in CAD per share) | $ 0 |  |
$50.00 - $54.24 | Bottom of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices | $ 50.00 |  |
$50.00 - $54.24 | Top of range |  |  |
Disclosure of range of exercise prices of outstanding share options [line items] |  |  |
Range of exercise prices |  | $ 54.24 |

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