Investments in Other Companies (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares
Long-term debt	$ 3,185,959	$ 3,380,274
Aero Engines, LLC. ("Aero Engines")
Payments to acquire interest in joint venture	26,600
Long-term debt	0
Investment balance in other companies	24,900
Aero Engines, LLC. ("Aero Engines") | Other Nonoperating Income.
Company's portion of loss generated by other companies	100
Eve Holdings, Inc. ("Eve")
Warrants to purchase shares | shares		1,500,000
Warrants exercise price (in dollars per share) | $ / shares		$ 0.01
Initial investment		$ 10,000
Eve Holdings, Inc. ("Eve") | Level 3
Beginning balance	14,180
Unrealized gains	4,591
Ending balance	18,771	$ 14,180
Eve Holdings, Inc. ("Eve") | Level 3 | Black Scholes Option Pricing Model | Volatility
Measurement input		0.50
Eve Holdings, Inc. ("Eve") | Put option
Shares obtained | shares		1,000,000
Eve Holdings, Inc. ("Eve") | Other Assets
Investment balance in other companies	29,300
Eve Holdings, Inc. ("Eve") | Other Nonoperating Income.
Company's portion of loss generated by other companies	$ 7,900
Eve Holdings, Inc. ("Eve") | Class A common stock
Number of shares acquired | shares		1,000,000