Net Income per Common Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

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

Basic and diluted net income per common share and a reconciliation of the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding during the three and nine months ended September 30, 2023 and 2022 (unaudited) was as follows:

	Three Months Ended				Nine Months Ended
(millions, except share and per share data)	September 30, 2023		September 30, 2022		September 30, 2023		September 30, 2022
Net income attributable to SP Plus Corporation	$	9.2	$	14.3	$	29.9	$	40.4
Basic weighted average common shares outstanding		19,649,611		20,744,813		19,660,930		21,054,095
Dilutive impact of share-based awards		260,697		232,854		213,235		169,887
Diluted weighted average common shares outstanding		19,910,308		20,977,667		19,874,165		21,223,982
Net income per common share
Basic	$	0.47	$	0.69	$	1.52	$	1.92
Diluted	$	0.46	$	0.68	$	1.50	$	1.90