Net Income (Loss) per Common Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Income (Loss) per Common Share and Reconciliation of Weighted Average Shares

Basic and diluted net income (loss) per common share and a reconciliation of the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding for the three and nine months ended September 30, 2021 and 2020 (unaudited) was as follows:

	Three Months Ended					Nine Months Ended
(millions, except share and per share data)	September 30, 2021		September 30, 2020			September 30, 2021		September 30, 2020
Net income (loss) attributable to SP Plus Corporation	$	11.5	$	(88.1	)	$	22.8	$	(173.3	)
Basic weighted average common shares outstanding		21,184,583		21,047,076			21,158,667		21,057,080
Dilutive impact of share-based awards		215,803		—			206,615		—
Diluted weighted average common shares outstanding		21,400,386		21,047,076			21,365,282		21,057,080
Net income (loss) per common share
Basic	$	0.54	$	(4.19	)	$	1.08	$	(8.23	)
Diluted	$	0.54	$	(4.19	)	$	1.07	$	(8.23	)