NET EARNINGS (LOSS) PER SHARE AND SHARE REPURCHASES (Tables)

9 Months Ended

Sep. 30, 2020

Diluted earnings (loss) per share is net earnings (loss) 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	SEPTEMBER 2020		SEPTEMBER 2019		SEPTEMBER 2020		SEPTEMBER 2019
Weighted average common shares outstanding – basic		746,996		745,626		746,809		745,901
Dilutive potential common shares:
Stock options		401		396		246		—
Restricted stock units		570		357		297		—
Performance share units		483		135		178		—
Total effect of outstanding dilutive potential common shares		1,454		888		721		—
Weighted average common shares outstanding – dilutive		748,450		746,514		747,530		745,901

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

The following shares were not included in the computation of diluted earnings (loss) 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	SEPTEMBER 2020		SEPTEMBER 2019		SEPTEMBER 2020		SEPTEMBER 2019
Stock options		2,260		2,384		2,260		2,755
Restricted stock units		—		—		—		358
Performance share units		729		959		729		1,054