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v3.24.2

Investments in Other Companies (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2024 USD ($) shares | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) item shares | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) $ / shares shares
Long-term debt |  | $ 3,006,052 | $ 2,782,119 |  | $ 2,782,119 |  | $ 3,006,052 |
Aircraft maintenance, materials and repairs |  |  | 183,267 | $ 162,491 | $ 328,682 | $ 304,717 |  |
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Other Nonoperating Income (Expense) |  |  |
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Other Nonoperating Income (Expense) |  |  |
Aero Engines, LLC. ("Aero Engines") |  |  |  |  |  |  |  |
Payments to acquire interest in joint venture |  |  |  |  | $ 26,600 |  |  |
Long-term debt |  |  | 0 |  | 0 |  |  |
Aero Engines, LLC. ("Aero Engines") | Other Assets |  |  |  |  |  |  |  |
Investment balance in other companies |  |  | $ 22,600 |  | 22,600 |  |  |
Aero Engines, LLC. ("Aero Engines") | Other income (loss), net |  |  |  |  |  |  |  |
Company's portion of income (loss) generated by other companies |  |  |  |  | $ 900 |  |  |
Contour Airlines |  |  |  |  |  |  |  |
Payments to acquire equity method investment | $ 15,100 | $ 9,900 |  |  |  |  |  |
Investment ownership (as a percent) |  | 9.90% | 25.00% |  | 25.00% |  | 9.90% |
Number of Board of Directors Seat Held | item |  |  |  |  | 1 |  |  |
Total Number of Board of Directors Seat | item |  |  |  |  | 5 |  |  |
Percentage of Board of Directors Seat Held |  |  | 20.00% |  | 20.00% |  |  |
Aircraft maintenance, materials and repairs |  |  |  |  | $ 12,700 |  |  |
Aircraft and collectible years |  |  |  |  | 4 years |  |  |
Contour Airlines | Other Assets |  |  |  |  |  |  |  |
Investment balance in other companies |  |  | $ 24,700 |  | $ 24,700 |  |  |
Contour Airlines | Other income (loss), net |  |  |  |  |  |  |  |
Company's portion of income (loss) generated by other companies |  |  |  |  | $ (300) |  |  |
Eve Holdings, Inc. ("Eve") |  |  |  |  |  |  |  |
Warrants to purchase shares | shares |  |  | 1,500,000 |  | 1,500,000 |  |  | 1,500,000
Warrants exercise price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 0.01
Initial investment |  |  |  |  |  |  |  | $ 10,000
Realized loss |  |  |  |  | $ 1,400 |  |  |
Realized gain on exercise of put options |  |  |  |  | 3,400 |  |  |
Eve Holdings, Inc. ("Eve") | Level 3 |  |  |  |  |  |  |  |
Beginning balance | $ 12,477 |  |  |  | 12,477 |  |  |
Exercise of put option for aircraft parts credits |  |  |  |  | (3,996) |  |  |
Realized gain on exercise of put options |  |  |  |  | 3,446 |  |  |
Unrealized loss |  |  |  |  | (5,852) |  |  |
Ending balance |  | $ 12,477 | $ 6,075 |  | 6,075 |  | $ 12,477 |
Eve Holdings, Inc. ("Eve") | Level 3 | Black Scholes Option Pricing Model | Volatility |  |  |  |  |  |  |  |
Measurement input |  |  |  |  |  |  |  | 0.52
Eve Holdings, Inc. ("Eve") | Put option |  |  |  |  |  |  |  |
Shares obtained | shares |  |  |  |  |  |  |  | 1,000,000
Shares sold | shares |  |  | 399,589 |  |  |  | 600,411 |
Shares reduced | shares |  |  |  |  |  |  | 600,411 |
Eve Holdings, Inc. ("Eve") | Other Assets |  |  |  |  |  |  |  |
Investment balance in other companies |  |  | $ 6,100 |  | 6,100 |  |  |
Eve Holdings, Inc. ("Eve") | Other income (loss), net |  |  |  |  |  |  |  |
Unrealized losses |  |  |  |  | $ (7,400) |  |  |
Eve Holdings, Inc. ("Eve") | Class A common stock |  |  |  |  |  |  |  |
Number of shares acquired | shares |  |  |  |  |  |  |  | 1,000,000

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