NET EARNINGS PER SHARE AND SHARE REPURCHASES Dilutive Potential Common Shares (Details) - shares shares in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Basic	746,603	756,815
Dilutive potential common shares	0	2,647
Diluted	746,603	759,462
Stock options
Dilutive potential common shares	0	1,682
Restricted stock units
Dilutive potential common shares	0	569
Performance share units
Dilutive potential common shares	0	396

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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