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Earnings per share (Tables)
9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Schedule of Shares Used in the Earnings Per Share Calculations
For the three months ended September 30For the nine months ended September 30
(in millions, except per share data)2024202320242023
Net income attributable to controlling shareholders$837 $780 $2,517 $2,904 
Weighted-average basic shares outstanding933.2 931.5 932.8 931.1 
Dilutive effect of stock options2.1 2.4 2.0 2.6 
Weighted-average diluted shares outstanding935.3 933.9 934.8 933.7 
Earnings per share - basic$0.90 $0.84 $2.70 $3.12 
Earnings per share - diluted$0.90 $0.84 $2.69 $3.11