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Commitments and Guarantees
 12 Months Ended
Dec. 31, 2023
Capital commitments [abstract]  
Commitments and Guarantees COMMITMENTS
37.1Aircraft acquisition
Through contracts with manufacturers and lessors, the Company committed to acquiring certain aircraft, as follows:
December,31
Description20232022
Lessors3132
Manufacturers96112
127144
The amounts shown below are discounted to present value using the weighted discount rate for lease operations, equivalent to 15.8% (21.0% as of December 31, 2022) and do not necessarily represent a cash outflow, as the Company is evaluating the acquisition of financing to meet these commitments.
December 31,
Description20232022
2023— 2,025,240 
2024916,053 1,544,642 
20251,290,764 1,969,208 
20264,991,454 2,414,533 
20274,359,775 1,361,299 
After 20274,889,906 4,650,961 
16,447,952 13,965,883 
37.2Letters of credit
The position of the letters of credit in use by the Company follows, for the following purposes:
December, 31
20232022
DescriptionR$US$R$US$
Security deposits and maintenance reserves1,979,883 408,957 2,453,336 470,194 
Bank guarantees9,161 — 44,563 — 
1,989,044 408,957 2,497,899 470,194