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COMMITMENTS AND CONTINGENCIES (Details)	1 Months Ended		6 Months Ended
COMMITMENTS AND CONTINGENCIES (Details)	May 31, 2026	Oct. 31, 2023 agreement	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2022 USD ($)	Apr. 08, 2022 USD ($)
Loss Contingencies [Line Items]
Reserves for proceeding-related contingencies			$ 172,000,000
Aggregate amount for legal actions for which no loss amount has been accrued			622,000,000
Estimated litigation liabilities			$ 0
Collection rate granted (in percentage)	10.00%
Air logistics services agreement term (in years)			10 years
Operating lease agreement not yet commenced			$ 2,254,000,000
ICMS-DIFAL
Loss Contingencies [Line Items]
Expected withdrawal of funds			1,000,000
Provision for disputed amounts			2,000,000
Income tax examination, judicial deposits			2,000,000
Capital Addition Purchase Commitments
Loss Contingencies [Line Items]
Committed contract, minimum annual cost			3,000,000
Operating lease agreement not yet commenced			34,000,000
Cloud Platform Services
Loss Contingencies [Line Items]
Paid in relation to the contract			$ 2,064,000,000
Maximum
Loss Contingencies [Line Items]
Operating lease term not yet commenced yet (in years)			16 years
Minimum
Loss Contingencies [Line Items]
Operating lease term not yet commenced yet (in years)			2 years
Technology Service
Loss Contingencies [Line Items]
Number of services agreement \| agreement		2
Technology Service \| Maximum
Loss Contingencies [Line Items]
Air logistics services agreement term (in years)		5 years
Air Logistics Services
Loss Contingencies [Line Items]
Committed contract, minimum annual cost			$ 272,000,000			$ 378,000,000
Three Federation Units
Loss Contingencies [Line Items]
Total amount of claim including surcharges and interest			3,000,000		$ 4,000,000
Fully Paid Off Between October 1, 2021 And September 30, 2026 \| Cloud Platform Services
Loss Contingencies [Line Items]
Purchase commitment			$ 3,502,000,000
Trademarks
Loss Contingencies [Line Items]
Loss contingency withholding income tax rate (in percent)	0.15
Other Royalties
Loss Contingencies [Line Items]
Loss contingency withholding income tax rate (in percent)	0.10
Brazilian Preliminary
Loss Contingencies [Line Items]
Provision consideration rate (in percent)			15.00%
Tax Claims
Loss Contingencies [Line Items]
Provision for disputed amounts			$ 632,000,000
Judicial deposit			593,000,000
Judicial deposits, interest income			143,000,000
Judicial deposits, differential rate amount			3,000,000
ICMS-DIFAL \| One Writ
Loss Contingencies [Line Items]
Provision for disputed amounts			152,000,000
Buyer Protection Program
Loss Contingencies [Line Items]
Provision for maximum potential exposure			9,292,000,000	$ 7,953,000,000
Product liability, contingency, recorded allowance			$ 22,000,000	$ 19,000,000