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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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