v3.26.1
Share Capital (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 23, 2026
Feb. 03, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Sep. 29, 2025
Class Of Stock [Line Items]                
Common stock, shares authorized     750,000,000   750,000,000      
Common stock, par value     $ 0.01   $ 0.01      
Preferred stock, shares authorized     25,000,000   25,000,000      
Preferred stock, par value     $ 0.01   $ 0.01      
Preferred stock, shares outstanding     0   0      
Common shares purchased, shares         7,600,000   7,800,000  
Common shares purchased, value     $ 345,000 $ 147,000 $ 429,000 $ 147,000    
Dividends on common shares     $ 84,000 $ 77,000 $ 169,000 $ 155,000    
Common stock, dividends, per share, paid     $ 0.3 $ 0.3 $ 0.6 $ 0.6    
Common stock, dividends, per share, declared     $ 0.3 $ 0.3 $ 0.6 $ 0.6    
Share capital         $ 1,277,000      
PSU and RSU [Member]                
Class Of Stock [Line Items]                
Share based compensation arrangement by share based payment award equity instruments other than options grants vested in period         800,000   700,000  
Share Capital [Member]                
Class Of Stock [Line Items]                
Common shares purchased, value     $ 0 $ 0 $ 0 $ 0 $ 0  
Dividends on common shares     0 0 0 0    
Share capital         0   $ 0  
Share Capital [Member] | NuVista Acquisition [Member]                
Class Of Stock [Line Items]                
Number of shares issued   30,100,000            
Share Capital [Member] | Permian Acquisition [Member]                
Class Of Stock [Line Items]                
Share capital   $ 301            
Paid in Surplus [Member]                
Class Of Stock [Line Items]                
Common shares purchased, value     345,000 147,000 429,000 147,000    
Dividends on common shares     $ 0 $ 0 0 $ 0    
Share capital         $ 1,277,000      
Paid in Surplus [Member] | Permian Acquisition [Member]                
Class Of Stock [Line Items]                
Share capital   $ 1,277,000            
Subsequent Event [Member]                
Class Of Stock [Line Items]                
Common stock, dividends, per share, declared $ 0.30              
Normal Course Issuer Bid [Member]                
Class Of Stock [Line Items]                
Common shares purchased, shares     6,100,000 4,100,000 7,600,000 4,100,000 7,800,000  
Common shares purchased, value     $ 345,000 $ 147,000 $ 429,000 $ 147,000 $ 307,000  
Normal Course Issuer Bid [Member] | Share Capital [Member]                
Class Of Stock [Line Items]                
Common shares purchased, value     61 41 76 41 78  
Normal Course Issuer Bid [Member] | Paid in Surplus [Member]                
Class Of Stock [Line Items]                
Common shares purchased, value     $ 345,000 $ 147,000 $ 429,000 $ 147,000 $ 307,000  
Normal Course Issuer Bid [Member] | Maximum [Member]                
Class Of Stock [Line Items]                
Stock repurchase program, number of shares authorized to be repurchased               22,300,000
Quarterly Cash Dividend Q1 2026 [Member] | Subsequent Event [Member]                
Class Of Stock [Line Items]                
Dividends payable, date declared Jul. 23, 2026              
Dividends payable, date to be paid Sep. 29, 2026              
Dividends payable, date of record Sep. 15, 2026