v3.26.1
Common shares
 3 Months Ended
Mar. 31, 2026
Equity [Abstract]  
Common shares Common shares
As at
Mar 31
As at
Dec 31
thousands of shares20262025
Authorized1,100,000 1,100,000 
Outstanding483,593 483,593 
The company’s common share activities are summarized below:
 Thousands of
 shares 		Millions of
 dollars
Balance as at December 31, 2024
509,045 942 
Purchases at stated value(25,452)(47)
Balance as at December 31, 2025
483,593 895 
Purchases at stated value— — 
Balance as at March 31, 2026
483,593 895 
The following table provides the calculation of basic and diluted earnings per common share and the dividends declared by the company on its outstanding common shares:
 
       Three Months
       to March 31
20262025
Net income (loss) per common share – basic
Net income (loss) (millions of Canadian dollars)
9401,288
Weighted-average number of common shares outstanding (millions of shares)
483.6509.0
Net income (loss) per common share (dollars)
1.942.53
Net income (loss) per common share – diluted
Net income (loss) (millions of Canadian dollars)
9401,288
Weighted-average number of common shares outstanding (millions of shares)
483.6509.0
Effect of employee share-based awards (millions of shares)
1.21.2
Weighted-average number of common shares outstanding,
        assuming dilution (millions of shares)
484.8510.2
Net income (loss) per common share (dollars)
1.942.52
Dividends per common share – declared (dollars)
0.870.72