XML 163 R133.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-Based Payments - Share Based Options by Exercise Price (Details)
shares in Thousands
Dec. 31, 2018
CAD ($)
shares
year
Dec. 31, 2017
CAD ($)
shares
Dec. 31, 2016
CAD ($)
shares
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 3,101 3,008 3,397
Weighted average remaining contractual life (years) | year 5.49    
Weighted average exercise price (in CAD per share) $ 37.06 $ 33.88 $ 34.19
$18.00 to $24.00      
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 624    
Weighted average remaining contractual life (years) | year 2.63    
Weighted average exercise price (in CAD per share) $ 21.28    
$18.00 to $24.00 | Bottom of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) 18.00    
$18.00 to $24.00 | Top of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) $ 24.00    
$24.01 to $30.00      
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 350    
Weighted average remaining contractual life (years) | year 3.74    
Weighted average exercise price (in CAD per share) $ 27.79    
$24.01 to $30.00 | Bottom of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) 24.01    
$24.01 to $30.00 | Top of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) $ 30    
$30.01 to $35.00      
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 308    
Weighted average remaining contractual life (years) | year 1.82    
Weighted average exercise price (in CAD per share) $ 31.11    
$30.01 to $35.00 | Bottom of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) 30.01    
$30.01 to $35.00 | Top of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) $ 35    
$35.01 to $45.00      
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 949    
Weighted average remaining contractual life (years) | year 6.23    
Weighted average exercise price (in CAD per share) $ 39.45    
$35.01 to $45.00 | Bottom of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) 35.01    
$35.01 to $45.00 | Top of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) $ 45    
$45.01 to $53.96      
Disclosure of range of exercise prices of outstanding share options [line items]      
Number of stock options (thousands) | shares 870    
Weighted average remaining contractual life (years) | year 8.75    
Weighted average exercise price (in CAD per share) $ 51.62    
$45.01 to $53.96 | Bottom of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) 45.01    
$45.01 to $53.96 | Top of range      
Disclosure of range of exercise prices of outstanding share options [line items]      
Range of exercise prices (in CAD per share) $ 53.96