RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING

RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING

Below is a reconciliation of basic to diluted shares outstanding:

	Year Ended December 31,
	2019	2018	2017
Basic	189.3	191.6	191.1
Dilutive effect of shares issuable under stock-based compensation plans	2.3	2.8	3.1
Diluted	191.6	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 above	0.2	0.4	0.6

The calculation of diluted EPS requires certain assumptions regarding the use of both cash proceeds and assumed proceeds that would be received upon the exercise of stock options and vesting of restricted stock outstanding as of December 31, 2019, 2018 and 2017.