Contract With Customer, Future Travel Liability, Expiration Period

No definition available.

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- Definition

Contract With Customer, Liability, Air Traffic, Current

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contract With Customer, Liability, Customer Rights To Book Future Travel

+ References

No definition available.

+ Details

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Namespace Prefix:	fron_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contract With Customer, Liability, Revenue Recognized, Percentage

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

+ Details

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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Capitalized Contract Cost [Line Items]
Air traffic liability	$ 372		$ 372		$ 273
Customer rights to book future travel	30		30
Passenger revenue recognized	$ 23	$ 7	$ 45	$ 17
Minimum
Capitalized Contract Cost [Line Items]
Future travel credit balance, expiration period			3 months
Maximum
Capitalized Contract Cost [Line Items]
Future travel credit balance, expiration period			12 months
Passenger
Capitalized Contract Cost [Line Items]
Air traffic liability recognized as passenger revenue			91.00%