NET EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2021

Diluted earnings per share is net earnings divided by the sum of the weighted average number of our outstanding common shares and the effect of our outstanding dilutive potential common shares.

	QUARTER ENDED				YEAR-TO-DATE ENDED
SHARES IN THOUSANDS	JUNE 2021		JUNE 2020		JUNE 2021		JUNE 2020
Weighted average common shares outstanding – basic		750,127		746,896		749,429		746,715
Dilutive potential common shares:
Stock options		443		—		330		169
Restricted stock units		659		38		699		161
Performance share units		279		50		315		25
Total effect of outstanding dilutive potential common shares		1,381		88		1,344		355
Weighted average common shares outstanding – dilutive		751,508		746,984		750,773		747,070

Potential Shares Not Included in the Computation of Diluted Earnings per Share

The following shares were not included in the computation of diluted earnings per share because they were either antidilutive or the required performance or market conditions were not met. Some or all of these shares may be dilutive potential common shares in future periods.

	QUARTER ENDED				YEAR-TO-DATE ENDED
SHARES IN THOUSANDS	JUNE 2021		JUNE 2020		JUNE 2021		JUNE 2020
Stock options		—		4,676		—		4,676
Performance share units		1,142		1,139		1,142		1,139