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Stockholders' equity - ASR - Additional Information (Details) - Accelerate share repurchase - USD ($)
$ / shares in Units, $ in Millions
2 Months Ended 6 Months Ended
Mar. 02, 2022
Jul. 12, 2022
Jun. 30, 2022
Feb. 28, 2022
Stockholders Equity Note [Line Items]        
Stock repurchase program authorized amount     $ 400 $ 400
Accelerated share repurchases price paid per share   $ 78.9443    
Initial shares received as part of an accelerated share repurchase program 3,483,942      
Additional common shares repurchased   1,582,922    
Common shares attributable to ASR   5,066,864    
Treasury stock        
Stockholders Equity Note [Line Items]        
Accelerated share repurchase adjustments $ 320 $ 120    
Capital surplus        
Stockholders Equity Note [Line Items]        
Accelerated share repurchase adjustments $ (80) $ 120