Earnings Per Share

6 Months Ended

Jun. 30, 2021

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 June 30		For the six months ended June 30
(in millions)	2021	2020	2021	2020
Weighted-average basic shares outstanding	666.7	678.2	666.6	680.8
Dilutive effect of stock options	3.2	2.3	3.2	2.3
Weighted-average diluted shares outstanding	669.9	680.5	669.8	683.1

For the three and six months ended June 30, 2021, there were no options excluded from the computation of diluted earnings per share (three and six months June 30, 2020 - 1.1 million and 0.9 million, respectively).