Earnings per share

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Earnings per share

Earnings per share

	For the three months ended March 31
(in millions)	2023		2022
Net income	$	800	$	590
Weighted-average basic shares outstanding	930.7		929.7
Dilutive effect of stock options	2.8		3.0
Weighted-average diluted shares outstanding	933.5		932.7
Earnings per share - basic	$	0.86	$	0.63
Earnings per share - diluted	$	0.86	$	0.63

For the three months ended March 31, 2023, there were 0.4 million options excluded from the computation of diluted earnings per share because their effects were not dilutive (three months ended March 31, 2022 - nil).