Earnings Per Share

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per share

Basic earnings per share has been calculated using Net income for the period divided by the weighted-average number of shares outstanding during the period. The number of shares used in the earnings per share calculations are reconciled as follows:

	For the three months ended March 31
(in millions)	2020	2019
Weighted-average basic shares outstanding	136.7	140.1
Dilutive effect of stock options	0.5	0.4
Weighted-average diluted shares outstanding	137.2	140.5

For the three months ended March 31, 2020, there were 0.1 million options excluded from the computation of diluted earnings per share because their effects were not dilutive (three months ended March 31, 2019 - 0.2 million).