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Related party transactions (Narrative) (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Nov. 11, 2021 | Nov. 01, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |  |  |  |
Total lease revenue |  |  | $ 4,412,003 | $ 4,321,006 | $ 4,682,266
Share repurchase |  |  | 35,406 | $ 117,302 | $ 607,343
General Electric |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Total lease revenue |  |  | 22,000 |  |
Purchases from related party |  |  | 1,000 |  |
Accounts payable, related parties |  |  | 6,000 |  |
Accounts receivable, related parties |  |  | 66,000 |  |
SES |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Total lease revenue |  |  | $ 12,000 |  |
Officer |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Treasury stock acquired (in shares) |  |  | 624,000 |  |
Share repurchase |  |  | $ 35,400 |  |
AerCap Holdings N.V. | General Electric |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Ownership percentage by GE (in percentage) |  | 46.00% |  |  |
SES |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Ownership (in percentage) |  |  | 50.00% |  |
Ordinary share capital |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GECAS Transaction, stock issued during period (in shares) |  |  | 111,500,000 |  |
GE Capital Aviation Services |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of voting interests acquired |  | 100.00% |  |  |
Cash consideration |  | $ 22,583,992 |  |  |
Consideration transferred in GE Capital Aviation Services acquisition |  | $ 1,000,000 |  |  |
GE Capital Aviation Services | Ordinary share capital |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GECAS Transaction, stock issued during period (in shares) | 111,500,000 | 111,500,000 |  |  |

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