Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Parking services revenue
Lease contracts	$ 130.8	$ 138.5
Management contracts	92.1	91.2
Total parking services revenue	222.9	229.7
Reimbursed management contract revenue	191.6	167.9
Total parking services revenue	414.5	397.6
Cost of parking services
Lease contracts	125.8	130.6
Management contracts	56.6	60.7
Total cost of parking services, gross	182.4	191.3
Reimbursed management contract expense	191.6	167.9
Total cost of parking services	374.0	359.2
Gross profit
Lease contracts	5.0	7.9
Management contracts	35.5	30.5
Total gross profit	40.5	38.4
General and administrative expenses	21.2	24.6
Depreciation and amortization	6.6	9.2
Operating income	12.7	4.6
Other expenses (income)
Interest expense	2.6	2.8
Interest income	(0.1)	(0.2)
Equity in losses from investment in unconsolidated entity	0.2	0.5
Total other expenses (income)	2.7	3.1
Earnings before income taxes	10.0	1.5
Income tax expense	3.3	0.9
Net income	6.7	0.6
Less: Net income attributable to noncontrolling interest	0.7	0.6
Net income attributable to SP Plus Corporation	$ 6.0	$ 0.0
Net income per common share
Basic (in dollars per share)	$ 0.27	$ 0.00
Diluted (in dollars per share)	$ 0.27	$ 0.00
Weighted average shares outstanding
Basic (in shares)	22,148,265	22,328,578
Diluted (in shares)	22,447,904	22,593,505