Aircraft Under Management (Details) $ in Millions		9 Months Ended
	Nov. 04, 2021 USD ($)	Sep. 30, 2021 USD ($) entity aircraft aircraft_management_platform joint_venture	Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of aircraft managed | aircraft		89
Number of aircraft management platforms | aircraft_management_platform		3
Percentage of non-controlling interest ownership, number of entities | entity		2
Financial Institutions Borrower
Schedule of Equity Method Investments [Line Items]
Number of aircraft | aircraft		4
Blackbird Capital I and Blackbird Capital II
Schedule of Equity Method Investments [Line Items]
Number of aircraft | aircraft		34
Number of joint ventures participated in | joint_venture		2
Percentage of equity ownership		9.50%
Equity method investment | $		$ 72.9	$ 52.6
Blackbird Capital I and Blackbird Capital II | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Equity capital commitments | $	$ 363.1
Total unfunded commitment | $	$ 10.3
Thunderbolt Platform
Schedule of Equity Method Investments [Line Items]
Number of aircraft | aircraft		51
Investment in aircraft sold | $		$ 9.3	$ 9.3
Thunderbolt II And Thunderbolt III
Schedule of Equity Method Investments [Line Items]
Percentage of noncontrolling interest		5.00%
Aircraft Held For Sale | Thunderbolt Platform
Schedule of Equity Method Investments [Line Items]
Number of entities which aircraft is managed | entity		3