Segment Information - Schedule of Segment Information by Regions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Services revenue
Services revenue	$ 381.0	$ 275.7	$ 730.8	$ 522.4
Total operating income (loss)	25.6	18.3	45.7	29.3
General and administrative expenses
General and administrative expenses	26.7	22.0	51.2	43.0
Depreciation and amortization
Depreciation and amortization	6.5	6.2	13.3	12.5
Operating Segments | Commercial
Services revenue
Services revenue	132.9	104.0	264.1	201.7
Total operating income (loss)	34.7	26.4	63.3	48.1
General and administrative expenses
General and administrative expenses	7.8	6.0	13.9	11.0
Depreciation and amortization
Depreciation and amortization	2.8	3.3	5.8	6.7
Operating Segments | Aviation
Services revenue
Services revenue	63.6	37.2	116.8	68.2
Total operating income (loss)	8.5	6.0	16.6	9.1
General and administrative expenses
General and administrative expenses	2.9	2.7	5.6	5.7
Depreciation and amortization
Depreciation and amortization	2.1	2.1	5.0	4.2
Segment Reconciling Items
Services revenue
Total operating income (loss)	(17.6)	(14.1)	(34.2)	(27.9)
General and administrative expenses
General and administrative expenses	16.0	13.3	31.7	26.3
Depreciation and amortization
Depreciation and amortization	1.6	0.8	2.5	1.6
Lease Type Contracts
Services revenue
Services revenue	70.6	50.9	133.2	93.6
Lease Type Contracts | Operating Segments | Commercial
Services revenue
Services revenue	67.1	48.8	126.3	90.2
Lease Type Contracts | Operating Segments | Aviation
Services revenue
Services revenue	3.5	2.1	6.9	3.4
Management Type Contracts
Services revenue
Services revenue	125.9	90.3	247.7	176.3
Management Type Contracts | Operating Segments | Commercial
Services revenue
Services revenue	65.8	55.2	137.8	111.5
Management Type Contracts | Operating Segments | Aviation
Services revenue
Services revenue	60.1	35.1	109.9	64.8
Reimbursed Management Type Contract Revenue
Services revenue
Services revenue	$ 184.5	$ 134.5	$ 349.9	$ 252.5