Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets
Net operating loss carry forwards	$ 20.6	$ 22.0
Accrued expenses	34.1	34.3
Accrued compensation	12.1	12.0
Book over tax cost unfavorable acquired lease contracts	20.6	25.2
Other	0.7	0.4
Total gross deferred tax assets	88.1	93.9
Less: valuation allowance	(6.8)	(12.3)
Total deferred tax assets	81.3	81.6
Deferred tax liabilities
Prepaid expenses	(0.4)	(0.6)
Undistributed foreign earnings	(1.0)	(0.8)
Tax over book depreciation and amortization	(11.0)	(16.7)
Tax over book goodwill amortization	(28.7)	(28.7)
Tax over book cost favorable acquired lease contracts	(15.6)	(19.8)
Equity investments in unconsolidated entities	(8.8)	(9.2)
Other	(0.1)	(0.7)
Total deferred tax liabilities	(65.6)	(76.5)
Net deferred tax asset	$ 15.7	$ 5.1