Net Income per Common Share (Tables)

3 Months Ended

Mar. 31, 2024

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 months ended March 31, 2024 and 2023 (unaudited) was as follows:

	Three Months Ended
(millions, except share and per share data)	March 31, 2024		March 31, 2023
Net income attributable to SP Plus Corporation	$	7.6	$	8.4
Basic weighted average common shares outstanding		19,803,578		19,701,426
Dilutive impact of share-based awards		189,391		165,874
Diluted weighted average common shares outstanding		19,992,969		19,867,300
Net income per common share
Basic	$	0.38	$	0.43
Diluted	$	0.38	$	0.42