Net Income per Share (Tables)

3 Months Ended

Mar. 31, 2021

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, 2021		March 31, 2020
Net income/(loss)	$	39.2	$	(116.6	)
Shares used in net income per common share - basic		64.7		64.5
Incremental shares of unvested restricted common stock		0.6		—
Shares used in net income per common share - diluted		65.3		64.5
Shares excluded as their inclusion would be anti-dilutive		—		0.1
Earnings/(Loss) per share:
Basic net income	$	0.61	$	(1.81	)
Diluted net income	$	0.60	$	(1.81	)