v3.26.1
Share capital (Tables)
 3 Months Ended
Mar. 31, 2026
Equity [Abstract]  
Schedule of Shares Redeemed Under Buyback Program
 Total number
of shares purchased		Average price paid per shareTotal number
of shares purchased as part of publicly announced program		Approximate dollar value of shares that may yet be purchased under the program
(in millions)
March 3/12/2025 - 3/19/20251,360,537 $183.75 1,360,537 $750.0 
June 6/13/2025 - 6/23/20251,717,181 $145.59 1,717,181 $500.0 
August 8/15/2025 - 8/20/2025560,100 $178.20 560,100 $900.2 
September 9/10/2025 - 9/19/2025866,512 $173.33 866,512 $750.0 
 4,504,330 $166.51 4,504,330