Earnings Per Share

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The numerator for both basic and diluted earnings per share is Net income. The denominator for basic earnings per share is the weighted-average shares outstanding during the period.

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

	Three Months Ended March 31,
	2022	2021
Basic weighted-average shares outstanding	134.9	141.1
Effect of dilutive securities(1)	1.8	2.0
Diluted weighted-average shares outstanding(2)	136.7	143.1

(1)The dilutive effect of outstanding stock options, restricted stock units, 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, 2022 and 2021 as their inclusion would have had an anti-dilutive effect.