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RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING (Tables)
 12 Months Ended
Dec. 31, 2021
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,
202120202019
Basic186.4 187.6 189.3 
Dilutive effect of shares issuable under stock-based compensation plans1.5 1.7 2.3 
Diluted187.9 189.3 191.6 
Antidilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above0.2 0.2 0.2