Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
Valuation allowances attributable to state net operating loss carryforwards and other state deferred tax assets of Central Parking	$ 6.8	$ 12.3
Change in valuation allowance	5.5	9.1	$ 4.0
Taxes paid for United States federal, state and foreign income taxes	18.1	$ 1.3	$ 1.3
State
Income Taxes
Operating loss carryforwards, amount	19.7
Canada
Income Taxes
Foreign subsidiary earnings permanently reinvested to satisfy current working capital requirements	2.4
Tax that may be payable on distribution of foreign subsidiary earnings to the United States	1.0
Puerto Rico
Income Taxes
Foreign subsidiary earnings permanently reinvested to satisfy current working capital requirements	5.6
Tax that may be payable on distribution of foreign subsidiary earnings to the United States	$ 2.5