Restructuring and Other Costs - Schedule of Restructuring and Other Costs (Details) - Central Merger - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Business Acquisition [Line Items]
Restructuring and other costs	$ 0.4	$ 0.0	$ 0.6	$ 2.5
Cost of Services - Lease Type Contracts
Business Acquisition [Line Items]
Restructuring and other costs				0.2
Cost of Services - Lease Type Contracts | Commercial
Business Acquisition [Line Items]
Restructuring and other costs		0.0		0.2
Cost of Services - Management Type Contracts
Business Acquisition [Line Items]
Restructuring and other costs	0.1	(0.1)	0.1	1.5
Cost of Services - Management Type Contracts | Commercial
Business Acquisition [Line Items]
Restructuring and other costs	0.1	0.0	0.1	1.0
Cost of Services - Management Type Contracts | Aviation
Business Acquisition [Line Items]
Restructuring and other costs		(0.1)		0.5
General and Administrative Expenses
Business Acquisition [Line Items]
Restructuring and other costs	0.3	0.1	0.5	0.8
General and Administrative Expenses | Commercial
Business Acquisition [Line Items]
Restructuring and other costs	0.6	0.1	0.7	0.1
General and Administrative Expenses | Aviation
Business Acquisition [Line Items]
Restructuring and other costs	(0.5)	$ 0.0	(0.4)	0.5
General and Administrative Expenses | Other
Business Acquisition [Line Items]
Restructuring and other costs	$ 0.2		$ 0.2	$ 0.2