Net Income per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Reconciliation of Basic to Diluted Net Income per Share

The following is a reconciliation of basic to diluted net income per share:

	Quarter Ended
	March 31, 2020			March 31, 2019
Net income	$	(116.6	)	$	35.2
Shares used in net income per common share - basic		64.5			64.2
Incremental shares of unvested restricted common stock		—			0.2
Shares used in net income per common share - diluted		64.5			64.4
Shares excluded as their inclusion would be anti-dilutive	0.1				—
(Loss)/Earnings per share:
Basic net income	$	(1.81	)	$	0.55
Diluted net income	$	(1.81	)	$	0.55