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Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2020

Schedule of Weighted Average Number of Shares

A reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding is as follows:



	Three Months Ended March 31,
	2020	2019
Basic weighted-average shares outstanding	142.7	147.0
Effect of dilutive securities⁽¹⁾	2.2	2.2
Diluted weighted-average shares outstanding⁽²⁾	144.9	149.2


(1)	The dilutive effect of outstanding stock options, restricted stock units, restricted stock, performance share units and Coworker Stock Purchase Plan units is reflected in the diluted weighted-average shares outstanding using the treasury stock method.

(2)

There were fewer than 0.1 million potential common shares excluded from diluted weighted-average shares outstanding for both the three months ended March 31, 2020 and 2019 as their inclusion would have had an anti-dilutive effect.