Net Income (Loss) per Common Share (Tables)

3 Months Ended

Mar. 31, 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 months ended March 31, 2021 and 2020 (unaudited) was as follows:

	Three Months Ended
(millions, except share and per share data)	March 31, 2021		March 31, 2020
Net income (loss) attributable to SP Plus Corporation	$	2.3	$	(46.1	)
Basic weighted average common shares outstanding		21,113,494		21,154,047
Dilutive impact of share-based awards		190,574		—
Diluted weighted average common shares outstanding		21,304,068		21,154,047
Net income (loss) per common share
Basic	$	0.11	$	(2.18	)
Diluted	$	0.11	$	(2.18	)