NET INCOME PER SHARE (Tables)

3 Months Ended

Mar. 31, 2020

Basic and diluted net income per share are calculated using the treasury stock method.



(in millions, except share and per share data)	Three Months Ended March 31,
	2020		2019
Basic
Net income	$	321.7	$	245.2
Average shares outstanding	91,075,973		91,952,828
Basic net income per share	$	3.53	$	2.67

Diluted
Net income	$	321.7	$	245.2
Average shares outstanding assuming dilution:
Average shares outstanding	91,075,973		91,952,828
Stock options and other contingently issuable shares ⁽¹⁾	1,763,677		1,662,297
Non-vested restricted stock grants	20,294		53,603
Average shares outstanding assuming dilution	92,859,944		93,668,728
Diluted net income per share	$	3.46	$	2.62

⁽¹⁾

There were 471,638 stock options and other contingently issuable shares excluded due to their anti-dilutive effect for the three months ended March 31, 2020. There were 49,501 stock options and other contingently issuable shares excluded due to their anti-dilutive effect for the three months ended March 31, 2019.