Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 38.5	$ 12.4
Accounts receivable, net	184.4	167.7
Prepaid expenses and other current assets	13.1	16.7
Total current assets	236.0	196.8
Property and equipment, net	66.0	60.2
Right-of-use assets	173.7	166.9
Goodwill	544.2	543.2
Other intangible assets, net	62.3	68.9
Deferred income taxes	42.5	44.4
Other noncurrent assets, net	43.6	41.0
Total noncurrent assets	932.3	924.6
Total assets	1,168.3	1,121.4
Liabilities
Accounts payable	142.7	133.4
Accrued and other current liabilities	128.9	137.6
Short-term lease liabilities	56.4	60.2
Current portion of long-term borrowings	14.7	12.4
Total current liabilities	342.7	343.6
Long-term borrowings, excluding current portion	345.1	331.8
Long-term lease liabilities	154.9	158.5
Other noncurrent liabilities	73.5	61.8
Total noncurrent liabilities	573.5	552.1
Total liabilities	916.2	895.7
Stockholders’ equity
Preferred stock, par value $0.01 per share; 5,000,000 shares authorized as of September 30, 2023 and December 31, 2022, respectively; no shares issued or outstanding	0.0	0.0
Common stock, par value $0.001 per share; 50,000,000 shares authorized as of September 30, 2023 and December 31, 2022; 23,444,353 and 19,649,611 shares issued and outstanding as of September 30, 2023, respectively, and 23,276,329 and 19,767,287 shares issued and outstanding as of December 31, 2022, respectively	0.0	0.0
Treasury stock, at cost; 3,794,742 and 3,509,042 shares as of September 30, 2023 and December 31, 2022, respectively	(130.5)	(120.0)
Additional paid-in capital	281.1	274.2
Accumulated other comprehensive loss	(2.0)	(1.8)
Retained earnings	103.5	73.6
Total SP Plus Corporation stockholders’ equity	252.1	226.0
Noncontrolling interests		(0.3)
Total stockholders’ equity	252.1	225.7
Total liabilities and stockholders’ equity	$ 1,168.3	$ 1,121.4