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Commitments And Contingencies (Narrative) (Details) $ / shares in Units, shares in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | --- | --- | ---
Apr. 08, 2022 USD ($) item | Sep. 30, 2022 USD ($) item $ / shares | Jan. 31, 2022 item | Sep. 30, 2022 USD ($) item $ / shares | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) item $ / shares shares | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) item | Dec. 31, 2020 item | Dec. 31, 2021 USD ($) item
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  | $ 45,000,000 |  | $ 45,000,000 |  | $ 45,000,000 |  |  |  |
Aggregate amount for legal actions for which no loss amount has been accrued |  | $ 249,000,000 |  | $ 249,000,000 |  | 249,000,000 |  |  |  |
Number of federation units where writs of mandamus where filed | item |  |  | 27 | 3 |  |  |  |  |  |
Loss accrued for reasonably possible legal actions |  |  |  |  |  | 0 |  |  |  |
Income tax expense (benefit) |  |  |  | $ 69,000,000 | $ 31,000,000 | $ 154,000,000 | $ 145,000,000 |  |  |
Air logistics services agreement term | 10 years |  |  |  |  |  |  |  |  |
Committed contract, minimum annual cost | $ 43,000,000 |  |  |  |  |  |  |  |  |
Number of dedicated aircrafts | item | 6 |  |  |  |  |  |  |  |  |
Number of dedicated aircrafts, of which has started operations | item |  | 1 |  | 1 |  | 1 |  |  |  |
Number of purchase commitments entered | item |  |  |  |  |  | 2 |  |  |  |
Sponsor Committed To Purchase Class A Ordinary Shares [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Initial public offering, shares | shares |  |  |  |  |  | 5 |  |  |  |
Shares issued, price per share | $ / shares |  | $ 10 |  | $ 10 |  | $ 10 |  |  |  |
Buyer Protection Program [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Provision for maximum potential exposure |  | $ 3,345,000,000 |  | $ 3,345,000,000 |  | $ 3,345,000,000 |  | $ 2,964,000,000 |  | $ 2,964,000,000
Product liability, contingency, recorded allowance |  | 4,000,000 |  | 4,000,000 |  | 4,000,000 |  | $ 5,000,000 |  | $ 5,000,000
ICMS-DIFAL [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of writs of mandamus | item |  |  |  |  |  |  |  |  |  | 15
Number of cases filed | item |  |  |  |  |  |  |  | 11 | 4 |
Number of cases filed became final and unappealable | item |  |  |  |  |  |  |  | 4 | 1 |
Provision for maximum potential exposure |  | 4,000,000 |  | 4,000,000 |  | 4,000,000 |  |  |  |
ICMS-DIFAL [Member] | 27 Federal Units [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  | 0 |  | 0 |  | 0 |  |  |  |
ICMS-DIFAL [Member] | 3 Federal Units [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  | $ 0 |  | $ 0 |  | $ 0 |  |  |  |
ICMS-DIFAL [Member] | Lawsuits Filed In 2020 [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of lawsuits pending | item |  | 3 |  | 3 |  | 3 |  |  |  |
ICMS-DIFAL [Member] | Lawsuits Filed In 2021 [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of lawsuits pending | item |  | 6 |  | 6 |  | 6 |  | 6 |  | 6
ICMS Tax Benefits Granted [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Reserves for proceeding-related contingencies |  | $ 0 |  | $ 0 |  | $ 0 |  |  |  |
Income tax expense (benefit) |  |  |  | (8,000,000) | $ (3,000,000) | (25,000,000) | $ (3,000,000) |  |  |
Ebazar.com.br Ltda [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of cases filed became final and unappealable | item |  |  |  |  |  |  |  | 1 |  |
Cloud Platform Services [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Paid in relation to the contract |  | 141,000,000 |  | 141,000,000 |  | 141,000,000 |  |  |  |
Cloud Platform Services [Member] | Fully Paid Off Between October 1, 2021 And September 30, 2026 [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Commitment, Amount |  |  |  |  |  | 824,000,000 |  |  |  |
Cloud Platform Services II [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Paid in relation to the contract |  | 29,000,000 |  | $ 29,000,000 |  | 29,000,000 |  |  |  |
Cloud Platform Services II [Member] | Fully Paid Off Between September 17, 2021 And September 17, 2024 [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Commitment, Amount |  |  |  |  |  | $ 108,000,000 |  |  |  |
Cloud Platform Services II [Member] | Fully Paid Off Between September 23, 2022 And September 23, 2025 [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase Commitment, Amount |  | $ 200,000,000 |  |  |  |  |  |  |  |

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