NET EARNINGS (LOSS) PER SHARE AND SHARE REPURCHASES - Dilutive Potential Common Shares (Details) - shares shares in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share Basic And Diluted [Line Items]
Basic	746,534	746,603
Dilutive potential common shares	621	0
Diluted	747,155	746,603
Stock options
Earnings Per Share Basic And Diluted [Line Items]
Dilutive potential common shares	338	0
Restricted stock units
Earnings Per Share Basic And Diluted [Line Items]
Dilutive potential common shares	283	0

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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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Earnings per share basic and diluted.

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