NET EARNINGS PER SHARE AND SHARE REPURCHASES (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share Basic And Diluted [Abstract]

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	JUNE 2019		JUNE 2018		JUNE 2019		JUNE 2018
Weighted average common shares outstanding – basic		745,486		757,829		746,041		757,317
Dilutive potential common shares:
Stock options		354		1,628		—		1,655
Restricted stock units		334		512		—		540
Performance share units		58		564		—		480
Total effect of outstanding dilutive potential common shares		746		2,704		—		2,675
Weighted average common shares outstanding – dilutive		746,232		760,533		746,041		759,992

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 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 2019		JUNE 2018		JUNE 2019		JUNE 2018
Stock options		2,490		—		2,848		—
Restricted stock units		—		—		359		—
Performance share units		999		486		1,074		486