NET EARNINGS PER SHARE (Tables)

9 Months Ended

Sep. 30, 2017

Diluted earnings per share is net earnings available to common shareholders 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 2017	SEPTEMBER 2016	SEPTEMBER 2017	SEPTEMBER 2016
Weighted average number of outstanding common shares – basic	753,535	749,587	752,301	708,395
Dilutive potential common shares:
Stock options	2,437	3,185	2,754	2,660
Restricted stock units	551	814	529	723
Performance share units	380	458	474	427
Total effect of outstanding dilutive potential common shares	3,368	4,457	3,757	3,810
Weighted average number of outstanding common shares – dilutive	756,903	754,044	756,058	712,205

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	SEPTEMBER 2017	SEPTEMBER 2016	SEPTEMBER 2017	SEPTEMBER 2016
Stock options	1,381	1,835	1,381	1,835
Performance share units	556	361	556	361