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RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING (Tables)
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Reconciliation of Basic to Diluted Shares Outstanding
Below is a reconciliation of basic to diluted shares outstanding:
Year Ended December 31,
201920182017
Basic189.3  191.6  191.1  
Dilutive effect of shares issuable under stock-based compensation plans2.3  2.8  3.1  
Diluted191.6  194.4  194.2  
Antidilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above0.2  0.4  0.6