Legal Proceedings and Other Matters - Additional Information (Details) $ in Millions	1 Months Ended	12 Months Ended	24 Months Ended
	Jun. 30, 2021 USD ($)	May 31, 2021 USD ($)	Dec. 31, 2017 item	May 31, 2022 USD ($)
Legal Proceedings and Other Matters
Loss contingency, loss recognized in period		$ 11.0
Number of engines purchased | item			4
Litigation settlement, amount awarded to other party	$ 11.5
Fair market value of engines at the time of sale				$ 13.0