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COMMITMENTS AND CONTINGENCIES - Narrative (Details) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 10, 2024 USD ($) | Apr. 08, 2022 USD ($) | Oct. 31, 2023 USD ($) | Jun. 30, 2024 USD ($) case | Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | [1] | Mar. 31, 2023 USD ($) | Jun. 30, 2024 USD ($) supplier case | Jun. 30, 2023 USD ($) | [1] | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Jul. 24, 2024 | Jul. 23, 2024
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  |  |  | $ 100,000,000 |  |  |  |  | $ 100,000,000 |  |  |  |  |
Aggregate amount for legal actions for which no loss amount has been accrued |  |  |  | 209,000,000 |  |  |  |  | 209,000,000 |  |  |  |  |
Estimated litigation liabilities |  |  |  | 0 |  |  |  |  | 0 |  |  |  |  |
Loss accrued for reasonably possible legal actions |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |
Income tax expense |  |  |  | (137,000,000) | $ (65,000,000) | $ (172,000,000) | $ (210,000,000) | $ (122,000,000) | $ (274,000,000) | $ (332,000,000) | $ (504,000,000) | $ (569,000,000) |  |
Number of purchase commitments entered | supplier |  |  |  |  |  |  |  |  | 2 |  |  |  |  |
Air logistics services agreement term | 5 years | 10 years | 3 years |  |  |  |  |  |  |  |  |  |  |
Committed contract, minimum annual cost | $ 56,000,000 | $ 43,000,000 | $ 112,000,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Punitive fine percentage |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% | 150.00%
Cloud Platform Services |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Paid in relation to the contract |  |  |  | 524,000,000 |  |  |  |  | $ 524,000,000 |  |  |  |  |
Fully Paid Off Between October 1, 2021 And September 30, 2026 | Cloud Platform Services |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase commitment |  |  |  |  |  |  |  |  | 824,000,000 |  |  |  |  |
Fully Paid Off Between September 17, 2021 And September 17, 2024 | Cloud Platform Services II |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase commitment |  |  |  |  |  |  |  |  | 200,000,000 |  |  |  |  |
Paid in relation to the contract |  |  |  | 118,000,000 |  |  |  |  | 118,000,000 |  |  |  |  |
Brazilian Preliminary |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for disputed amounts |  |  |  | 325,000,000 |  |  |  |  | 325,000,000 |  |  |  |  |
Judicial deposits |  |  |  | 292,000,000 |  |  |  |  | 292,000,000 |  |  |  |  |
Interest income |  |  |  | $ 54,000,000 |  |  |  |  | $ 54,000,000 |  |  |  |  |
ICMS-DIFAL | Lawsuits Filed In 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of lawsuits pending | case |  |  |  | 3 |  |  |  |  | 3 |  |  |  |  |
ICMS |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount under dispute |  |  |  | $ 51,000,000 |  |  |  |  | $ 51,000,000 |  |  |  |  |
PIS And COFINS Tax Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax expense |  |  |  |  |  |  |  |  | 14,000,000 |  |  |  |  |
IRPJ And CSLL |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount under dispute |  |  |  | 68,000,000 |  |  |  |  | 68,000,000 |  |  |  |  |
Buyer Protection Program |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for maximum potential exposure |  |  |  | 4,907,000,000 | 5,072,000,000 |  |  |  | 4,907,000,000 |  |  | 5,072,000,000 |  |
Product liability, contingency, recorded allowance |  |  |  | $ 9,000,000 | $ 8,000,000 |  |  |  | $ 9,000,000 |  |  | $ 8,000,000 |  |
[1] | Recast for consistency with the current presentation due to the change in the presentation of certain financial results. Please refer to Note 2 – Summary of significant accounting policies - Change in the presentation of certain financial results and reclassification of prior year results.

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