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Investments - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) engine aircraft equipment | Jun. 30, 2021 USD ($) equipment | Dec. 31, 2021 USD ($)
Equipment Held For Operating Lease |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net book value of equipment held for operating lease | $ 1,957,638 |  | $ 1,957,638 |  | $ 1,991,368
WMES |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership interest | 50.00% |  | 50.00% |  |
Number of engines in lease portfolio | engine |  |  | 36 |  |
Number of aircraft in lease portfolio | aircraft |  |  | 5 |  |
WMES | Other Income | Asset Management |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Other sales and revenue | $ 500 | $ 400 | $ 1,000 | $ 700 |
WMES | Aircraft |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net book value of equipment held for operating lease | $ 258,900 |  | $ 258,900 |  |
CASC Willis |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership interest | 50.00% |  | 50.00% |  |
Number of engines in lease portfolio | engine |  |  | 4 |  |
CASC Willis | Equipment Held For Operating Lease |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net book value of equipment held for operating lease | $ 45,500 |  | $ 45,500 |  |
WMES and CASC Willis |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of assets sold | equipment |  |  | 0 | 0 |

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