Unconsolidated Equity Method Investment (Details) $ in Thousands	2 Months Ended
	Feb. 29, 2020 USD ($) aircraft	Feb. 28, 2019 USD ($)	Dec. 31, 2019 USD ($)
Unconsolidated equity method investments	$ 33,470		$ 32,974
Earnings of unconsolidated equity method investments, net of tax	496	$ 1,611
Property Subject to or Available for Operating Lease, Net	$ 7,142,987		$ 7,375,018
Equity Method Investee
Total number of aircraft owned by joint ventures | aircraft	9
Property Subject to or Available for Operating Lease, Net	$ 325,585