Net Income per Common Share (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2023 and 2022 (unaudited) was as follows:

	Three Months Ended				Six Months Ended
(millions, except share and per share data)	June 30, 2023		June 30, 2022		June 30, 2023		June 30, 2022
Net income attributable to SP Plus Corporation	$	12.3	$	15.4	$	20.7	$	26.1
Basic weighted average common shares outstanding		19,631,772		21,195,819		19,666,684		21,211,299
Dilutive impact of share-based awards		208,181		160,645		187,216		136,143
Diluted weighted average common shares outstanding		19,839,953		21,356,464		19,853,900		21,347,442
Net income per common share
Basic	$	0.63	$	0.73	$	1.05	$	1.23
Diluted	$	0.62	$	0.72	$	1.04	$	1.22