$ULCC
Frontier Group Holdings, Inc. Stock $ulcc

$ulcc Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000167007622000016 Filed on February 23, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$609.0M	$2.060B	$267.0M
YoY Change	128.09%	64.8%	-59.24%
Cost Of Revenue	$317.0M	$1.105B	$187.0M
YoY Change	69.52%	50.54%	-30.74%
Gross Profit	$292.0M	$955.0M	$80.00M
YoY Change	265.0%	85.08%	-79.22%
Gross Profit Margin	47.95%	46.36%	29.96%
Selling, General & Admin	$327.0M	$1.228B	$242.0M
YoY Change	35.12%	29.13%	-19.33%
% of Gross Profit	111.99%	128.59%	302.5%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.00M	$38.00M	$10.00M
YoY Change	0.0%	15.15%	-9.09%
% of Gross Profit	3.42%	3.98%	12.5%
Operating Expenses	$378.0M	$1.367B	$264.0M
YoY Change	43.18%	55.16%	-16.72%
Operating Profit	-$86.00M	-$117.0M	-$184.0M
YoY Change	-53.26%	-67.95%	-370.59%
Interest Expense	$0.00	-$27.00M	-$9.000M
YoY Change	-100.0%	285.71%	-325.0%
% of Operating Profit
Other Income/Expense, Net		-$27.00M
YoY Change		285.71%
Pretax Income	-$86.00M	-$144.0M	-$193.0M
YoY Change	-55.44%	-61.29%	-368.06%
Income Tax	-$33.00M	-$42.00M	-$66.00M
% Of Pretax Income
Net Earnings	-$53.00M	-$102.0M	-$127.0M
YoY Change	-58.27%	-54.67%	-326.79%
Net Earnings / Revenue	-8.7%	-4.95%	-47.57%
Basic Earnings Per Share		-$0.48
Diluted Earnings Per Share	-$245.0K	-$0.48	-$590.4K
COMMON SHARES
Basic Shares Outstanding	216.0M shares	211.4M shares
Diluted Shares Outstanding		211.4M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$918.0M	$918.0M	$378.0M
YoY Change	142.86%	142.86%
Cash & Equivalents	$918.0M	$918.0M	$378.0M
Short-Term Investments
Other Short-Term Assets	$40.00M	$37.00M	$226.0M
YoY Change	-82.3%	-43.08%
Inventory
Prepaid Expenses	$14.00M		$24.00M
Receivables	$50.00M	$50.00M	$28.00M
Other Receivables	$32.00M	$32.00M	$179.0M
Total Short-Term Assets	$1.037B	$1.037B	$650.0M
YoY Change	59.54%	59.54%
LONG-TERM ASSETS
Property, Plant & Equipment	$186.0M	$2.612B	$176.0M
YoY Change	5.68%	7.67%
Goodwill
YoY Change
Intangibles	$29.00M		$29.00M
YoY Change	0.0%
Long-Term Investments
YoY Change
Other Assets	$199.0M	$557.0M	$143.0M
YoY Change	39.16%	24.05%
Total Long-Term Assets	$3.198B	$3.198B	$2.904B
YoY Change	10.12%	10.12%
TOTAL ASSETS
Total Short-Term Assets	$1.037B	$1.037B	$650.0M
Total Long-Term Assets	$3.198B	$3.198B	$2.904B
Total Assets	$4.235B	$4.235B	$3.554B
YoY Change	19.16%	19.16%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$86.00M	$86.00M	$71.00M
YoY Change	21.13%	21.13%
Accrued Expenses	$582.0M	$582.0M	$513.0M
YoY Change	13.45%	13.45%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$127.0M	$127.0M	$101.0M
YoY Change	25.74%	25.74%
Total Short-Term Liabilities	$1.326B	$1.326B	$1.003B
YoY Change	32.2%	32.2%
LONG-TERM LIABILITIES
Long-Term Debt	$287.0M	$287.0M	$247.0M
YoY Change	16.19%	16.19%
Other Long-Term Liabilities	$60.00M	$2.092B	$96.00M
YoY Change	-37.5%	5.39%
Total Long-Term Liabilities	$347.0M	$2.379B	$343.0M
YoY Change	1.17%	6.59%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.326B	$1.326B	$1.003B
Total Long-Term Liabilities	$347.0M	$2.379B	$343.0M
Total Liabilities	$3.705B	$3.705B	$3.244B
YoY Change	14.21%	14.21%
SHAREHOLDERS EQUITY
Retained Earnings	$159.0M		$261.0M
YoY Change	-39.08%
Common Stock	$0.00		$0.00
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$530.0M	$530.0M	$310.0M
YoY Change
Total Liabilities & Shareholders Equity	$4.235B	$4.235B	$3.554B
YoY Change	19.16%	19.16%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	-$53.00M	-$102.0M	-$127.0M
YoY Change	-58.27%	-54.67%	-326.79%
Depreciation, Depletion And Amortization	$10.00M	$38.00M	$10.00M
YoY Change	0.0%	15.15%	-9.09%
Cash From Operating Activities	$120.0M	$216.0M	-$191.0M
YoY Change	-162.83%	-138.78%	-418.33%
INVESTING ACTIVITIES
Capital Expenditures	-$7.000M	-$27.00M	-$10.00M
YoY Change	-30.0%	68.75%	-33.33%
Acquisitions
YoY Change
Other Investing Activities	-$64.00M	$4.000M	$6.000M
YoY Change	-1166.67%	300.0%	-154.55%
Cash From Investing Activities	-$71.00M	-$67.00M	-$4.000M
YoY Change	1675.0%	-709.09%	-84.62%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$97.00M
YoY Change		-23.02%
Cash From Financing Activities	67.00M	$391.0M	8.000M
YoY Change	737.5%	150.64%	-73.33%
NET CHANGE
Cash From Operating Activities	120.0M	$216.0M	-191.0M
Cash From Investing Activities	-71.00M	-$67.00M	-4.000M
Cash From Financing Activities	67.00M	$391.0M	8.000M
Net Change In Cash	116.0M	$540.0M	-187.0M
YoY Change	-162.03%	-238.46%	-392.19%
FREE CASH FLOW
Cash From Operating Activities	$120.0M	$216.0M	-$191.0M
Capital Expenditures	-$7.000M	-$27.00M	-$10.00M
Free Cash Flow	$127.0M	$243.0M	-$181.0M
YoY Change	-170.17%	-144.92%	-341.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001670076
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CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-40304
CY2021	dei	Entity Registrant Name EntityRegistrantName	Frontier Group Holdings, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	4545 Airport Way
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	46-3681866
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Denver
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	CO
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	80239
CY2021	dei	City Area Code CityAreaCode	720
CY2021	dei	Local Phone Number LocalPhoneNumber	374-4490
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.001 par value
CY2021	dei	Trading Symbol TradingSymbol	ULCC
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
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CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
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CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
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CY2021	dei	Auditor Firm AuditorFirmId	42
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CY2021	dei	Auditor Location AuditorLocation	Denver, Colorado
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CY2019	us-gaap	Net Income Loss NetIncomeLoss	251000000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-32000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-14000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	52000000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	38000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	33000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	46000000	USD
CY2021	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	60000000	USD
CY2020	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	48000000	USD
CY2019	us-gaap	Sale And Leaseback Transaction Gain Loss Net SaleAndLeasebackTransactionGainLossNet	107000000	USD
CY2021	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	22000000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	9000000	USD
CY2019	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	0	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	11000000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	8000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	8000000	USD
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	1000000	USD
CY2020	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	0	USD
CY2019	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	0	USD
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	4000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1000000	USD
CY2021	fron	Operating Lease Payments For Proceeds From Lease Modifications OperatingLeasePaymentsForProceedsFromLeaseModifications	0	USD
CY2020	fron	Operating Lease Payments For Proceeds From Lease Modifications OperatingLeasePaymentsForProceedsFromLeaseModifications	-17000000	USD
CY2019	fron	Operating Lease Payments For Proceeds From Lease Modifications OperatingLeasePaymentsForProceedsFromLeaseModifications	0	USD
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	37000000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	32000000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	29000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	14000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-61000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6000000	USD
CY2021	fron	Increase Decrease In Supplies And Other Current Assets IncreaseDecreaseInSuppliesAndOtherCurrentAssets	-174000000	USD
CY2020	fron	Increase Decrease In Supplies And Other Current Assets IncreaseDecreaseInSuppliesAndOtherCurrentAssets	166000000	USD
CY2019	fron	Increase Decrease In Supplies And Other Current Assets IncreaseDecreaseInSuppliesAndOtherCurrentAssets	18000000	USD
CY2021	fron	Increase Decrease In Deposits On Aircraft Maintenance IncreaseDecreaseInDepositsOnAircraftMaintenance	20000000	USD
CY2020	fron	Increase Decrease In Deposits On Aircraft Maintenance IncreaseDecreaseInDepositsOnAircraftMaintenance	15000000	USD
CY2019	fron	Increase Decrease In Deposits On Aircraft Maintenance IncreaseDecreaseInDepositsOnAircraftMaintenance	18000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	13000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	24000000	USD
CY2021	fron	Increase Decrease In Contract With Customer Liability Air Traffic IncreaseDecreaseInContractWithCustomerLiabilityAirTraffic	138000000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	3000000	USD
CY2020	fron	Increase Decrease In Contract With Customer Liability Air Traffic IncreaseDecreaseInContractWithCustomerLiabilityAirTraffic	-114000000	USD
CY2019	fron	Increase Decrease In Contract With Customer Liability Air Traffic IncreaseDecreaseInContractWithCustomerLiabilityAirTraffic	36000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	84000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-67000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-67000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	216000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-557000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	171000000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	27000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	16000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	45000000	USD
CY2021	fron	Payments For Pre Delivery Deposits For Flight Equipment Net Of Refunds PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds	36000000	USD
CY2020	fron	Payments For Pre Delivery Deposits For Flight Equipment Net Of Refunds PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds	-28000000	USD
CY2019	fron	Payments For Pre Delivery Deposits For Flight Equipment Net Of Refunds PaymentsForPreDeliveryDepositsForFlightEquipmentNetOfRefunds	17000000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	4000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-67000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	11000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-62000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	163000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	236000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	170000000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	97000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	126000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	139000000	USD
CY2021	fron	Proceeds From Sale Leaseback Transactions ProceedsFromSaleLeasebackTransactions	59000000	USD
CY2020	fron	Proceeds From Sale Leaseback Transactions ProceedsFromSaleLeasebackTransactions	47000000	USD
CY2019	fron	Proceeds From Sale Leaseback Transactions ProceedsFromSaleLeasebackTransactions	92000000	USD
CY2021	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	266000000	USD
CY2020	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2019	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	159000000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3000000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1000000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	391000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	156000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-39000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	540000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-390000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	70000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	768000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	698000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	918000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	768000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	280000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	251000000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	159000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	21000000	USD
CY2019	fron	Adjustments To Additional Paid In Capital Stock Option Repurchase AdjustmentsToAdditionalPaidInCapitalStockOptionRepurchase	3000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	542000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-225000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-15000000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	310000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-102000000	USD
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	1000000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11000000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	267000000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	43000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	530000000	USD
CY2021	fron	Number Of Airports NumberOfAirports	120	airport
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	reportableSegment
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:12pt;text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
CY2021Q2	fron	Sale Of Stock Offering Discounts And Commissions SaleOfStockOfferingDiscountsAndCommissions	14000000	USD
CY2021Q2	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	5000000	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2000000000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	1000000	USD
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	1000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3000000	USD
CY2021Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	12000000	USD
CY2020Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	8000000	USD
CY2021	us-gaap	Depreciation Nonproduction DepreciationNonproduction	38000000	USD
CY2020	us-gaap	Depreciation Nonproduction DepreciationNonproduction	32000000	USD
CY2019	us-gaap	Depreciation Nonproduction DepreciationNonproduction	45000000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	0	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1000000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	38000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	33000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	46000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	fron	Deposits On Aircraft Maintenance Allowance For Credit Loss DepositsOnAircraftMaintenanceAllowanceForCreditLoss	0	USD
CY2020Q4	fron	Deposits On Aircraft Maintenance Allowance For Credit Loss DepositsOnAircraftMaintenanceAllowanceForCreditLoss	0	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	7000000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	4000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	10000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	8000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	fron	Multiemployer Plan Number Of Employee Groups MultiemployerPlanNumberOfEmployeeGroups	7	employee_group
CY2021	us-gaap	Multiemployer Plan Pension Significant Employees Covered By Collective Bargaining Arrangement To All Entitys Employees Percentage MultiemployerPlanPensionSignificantEmployeesCoveredByCollectiveBargainingArrangementToAllEntitysEmployeesPercentage	0.88
CY2021Q4	fron	Aircraft Maintenance Deposits Number Of Lessors AircraftMaintenanceDepositsNumberOfLessors	2	numberOfLessors
CY2021Q4	fron	Number Of Vendors Pre Delivery Deposits NumberOfVendorsPreDeliveryDeposits	1	numberOfVendors
CY2021Q4	us-gaap	Warrants And Rights Outstanding Term WarrantsAndRightsOutstandingTerm	P5Y
CY2021	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	22000000	USD
CY2020	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	9000000	USD
CY2021	fron	Cares Act Employee Retention Credit CARESActEmployeeRetentionCredit	17000000	USD
CY2020	fron	Cares Act Employee Retention Credit CARESActEmployeeRetentionCredit	16000000	USD
CY2020Q4	fron	Contract With Customer Liability Air Traffic Current ContractWithCustomerLiabilityAirTrafficCurrent	135000000	USD
CY2021Q4	fron	Contract With Customer Liability Air Traffic Current ContractWithCustomerLiabilityAirTrafficCurrent	273000000	USD
CY2021Q4	fron	Contract With Customer Liability Customer Rights To Book Future Travel ContractWithCustomerLiabilityCustomerRightsToBookFutureTravel	59000000	USD
CY2020Q3	fron	Contract With Customer Liability Frequent Flyer Increase For Modification Of Contract ContractWithCustomerLiabilityFrequentFlyerIncreaseForModificationOfContract	25000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2060000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1250000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2508000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2060000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1250000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2508000000	USD
CY2021Q4	fron	Aircraft Passenger And Other Taxes Receivable Current AircraftPassengerAndOtherTaxesReceivableCurrent	9000000	USD
CY2020Q4	fron	Aircraft Passenger And Other Taxes Receivable Current AircraftPassengerAndOtherTaxesReceivableCurrent	26000000	USD
CY2021Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	14000000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	24000000	USD
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3000000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	161000000	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	14000000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	15000000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	40000000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	226000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	130000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	107000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	186000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	176000000	USD
CY2021Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	26000000	USD
CY2021Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	26000000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	26000000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	26000000	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	42000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	13000000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	29000000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	42000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	13000000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	29000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1000000	USD
CY2021Q4	fron	Finite Lived Intangible Asset Expected Amortization Year Six FiniteLivedIntangibleAssetExpectedAmortizationYearSix	1000000	USD
CY2021Q4	fron	Finite Lived Intangible Asset Expected Amortization Year Eight FiniteLivedIntangibleAssetExpectedAmortizationYearEight	1000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1000000	USD
CY2021Q4	fron	Finite Lived Intangible Asset Expected Amortization Year Seven FiniteLivedIntangibleAssetExpectedAmortizationYearSeven	1000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	0	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	1000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-15000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	21000000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	89000000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	97000000	USD
CY2021Q4	fron	Passenger Taxes And Fees Payable Current PassengerTaxesAndFeesPayableCurrent	84000000	USD
CY2020Q4	fron	Passenger Taxes And Fees Payable Current PassengerTaxesAndFeesPayableCurrent	41000000	USD
CY2021Q4	fron	Accrued Landing Fees And Other Rentals Current AccruedLandingFeesAndOtherRentalsCurrent	64000000	USD
CY2020Q4	fron	Accrued Landing Fees And Other Rentals Current AccruedLandingFeesAndOtherRentalsCurrent	33000000	USD
CY2019	fron	Aircraft Rent Expense AircraftRentExpense	368000000	USD
CY2021Q4	fron	Accrued Aircraft Maintenance Materials And Repairs Current AccruedAircraftMaintenanceMaterialsAndRepairsCurrent	36000000	USD
CY2020Q4	fron	Accrued Aircraft Maintenance Materials And Repairs Current AccruedAircraftMaintenanceMaterialsAndRepairsCurrent	22000000	USD
CY2021Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	26000000	USD
CY2020Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	0	USD
CY2021Q4	fron	Leased Aircraft Return Liability Current LeasedAircraftReturnLiabilityCurrent	25000000	USD
CY2020Q4	fron	Leased Aircraft Return Liability Current LeasedAircraftReturnLiabilityCurrent	20000000	USD
CY2021Q4	fron	Accrued Fuel Costs Current AccruedFuelCostsCurrent	23000000	USD
CY2020Q4	fron	Accrued Fuel Costs Current AccruedFuelCostsCurrent	6000000	USD
CY2021Q4	fron	Warrants And Rights Outstanding Current WarrantsAndRightsOutstandingCurrent	0	USD
CY2020Q4	fron	Warrants And Rights Outstanding Current WarrantsAndRightsOutstandingCurrent	18000000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	36000000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	30000000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	383000000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	267000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	423000000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	357000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	127000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	101000000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	9000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	9000000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	287000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	247000000	USD
CY2020Q2	us-gaap	Warrants And Rights Outstanding Term WarrantsAndRightsOutstandingTerm	P5Y
CY2021	us-gaap	Interest Paid InterestPaid	9000000	USD
CY2020	us-gaap	Interest Paid InterestPaid	7000000	USD
CY2019	us-gaap	Interest Paid InterestPaid	10000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	127000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	61000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	150000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	81000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	423000000	USD
CY2020Q1	fron	Lessee Operating Lease Number Of Amendments LesseeOperatingLeaseNumberOfAmendments	2	amendment
CY2020Q1	fron	Lessee Operating Lease Renewal Number Of Aircraft LesseeOperatingLeaseRenewalNumberOfAircraft	2	aircraft
CY2020Q1	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P5Y
CY2020Q1	fron	Operating Lease Payments For Proceeds From Lease Modifications OperatingLeasePaymentsForProceedsFromLeaseModifications	-17000000	USD
CY2020Q1	fron	Lessee Operating Lease Renewal Number Of Aircraft LesseeOperatingLeaseRenewalNumberOfAircraft	2	aircraft
CY2021Q2	fron	Lessee Operating Lease Termination Number Of Aircraft LesseeOperatingLeaseTerminationNumberOfAircraft	6	aircraft
CY2021	fron	Aircraft Rent Expense AircraftRentExpense	530000000	USD
CY2020	fron	Aircraft Rent Expense AircraftRentExpense	396000000	USD
CY2021	fron	Supplemental Rent Expense Non Recoverable SupplementalRentExpenseNonRecoverable	-3000000	USD
CY2020	fron	Supplemental Rent Expense Non Recoverable SupplementalRentExpenseNonRecoverable	2000000	USD
CY2019	fron	Supplemental Rent Expense Non Recoverable SupplementalRentExpenseNonRecoverable	6000000	USD
CY2021	fron	Supplemental Rent Expense Lease Return Obligations SupplementalRentExpenseLeaseReturnObligations	61000000	USD
CY2020	fron	Supplemental Rent Expense Lease Return Obligations SupplementalRentExpenseLeaseReturnObligations	25000000	USD
CY2019	fron	Supplemental Rent Expense Lease Return Obligations SupplementalRentExpenseLeaseReturnObligations	5000000	USD
CY2021Q4	fron	Aircraft Maintenance Deposits Expected To Be Recoverable AircraftMaintenanceDepositsExpectedToBeRecoverable	108000000	USD
CY2020Q4	fron	Aircraft Maintenance Deposits Expected To Be Recoverable AircraftMaintenanceDepositsExpectedToBeRecoverable	82000000	USD
CY2021Q4	fron	Aircraft Maintenance Deposits Expected To Be Recoverable Eligible Maintenance Performed AircraftMaintenanceDepositsExpectedToBeRecoverableEligibleMaintenancePerformed	10000000	USD
CY2020Q4	fron	Aircraft Maintenance Deposits Expected To Be Recoverable Eligible Maintenance Performed AircraftMaintenanceDepositsExpectedToBeRecoverableEligibleMaintenancePerformed	1000000	USD
CY2021Q4	fron	Deposits On Aircraft Maintenance Noncurrent DepositsOnAircraftMaintenanceNoncurrent	98000000	USD
CY2020Q4	fron	Deposits On Aircraft Maintenance Noncurrent DepositsOnAircraftMaintenanceNoncurrent	82000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Year Four LesseeOperatingLeaseMaintenanceReservePaymentYearFour	3000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Year Five LesseeOperatingLeaseMaintenanceReservePaymentYearFive	3000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Year One LesseeOperatingLeaseMaintenanceReservePaymentYearOne	3000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Year Three LesseeOperatingLeaseMaintenanceReservePaymentYearThree	3000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Year Two LesseeOperatingLeaseMaintenanceReservePaymentYearTwo	3000000	USD
CY2021Q4	fron	Lessee Operating Lease Maintenance Reserve Payment Due After Year Five LesseeOperatingLeaseMaintenanceReservePaymentDueAfterYearFive	9000000	USD
CY2021	fron	Number Of Airports NumberOfAirports	120	airport
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2426000000	USD
CY2021	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	-22000000	USD
CY2020	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	33000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2250000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	444000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	416000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1991000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1848000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2435000000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2264000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0508
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0515
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	454000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	337000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	363000000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	284000000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	220000000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	186000000	USD
CY2021	us-gaap	Lease Cost LeaseCost	738000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	557000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	549000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	456000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	435000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	419000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	396000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	332000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	915000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2953000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	518000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2435000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	444000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1991000000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	461000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	340000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	374000000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8000000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8000000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9879240	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	1.93
CY2020Q4	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateGrantDateFairValue	10000000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2021	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodAggregateGrantDateFairValue	0	USD
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2202895	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.62
CY2021	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodAggregateGrantDateFairValue	2000000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	24938	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.15
CY2021	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodAggregateGrantDateFairValue	0	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7651407	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	1.99
CY2021Q4	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAggregateGrantDateFairValue	8000000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	7480088	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	1.79
CY2021Q4	fron	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Aggregate Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableAggregateGrantDateFairValue	7000000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	454100	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.46
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2202895	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	32000000	USD
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	89000000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	1000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y1M6D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y1M6D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y2M12D
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	46000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	37000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	32000000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	21000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	23000000	USD
CY2021Q4	us-gaap	Deferred Compensation Sharebased Arrangements Liability Classified Noncurrent DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent	0	USD
CY2020Q4	us-gaap	Deferred Compensation Sharebased Arrangements Liability Classified Noncurrent DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent	26000000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9000000	USD
CY2021Q4	fron	Other Liabilities Miscellaneous Noncurrent OtherLiabilitiesMiscellaneousNoncurrent	39000000	USD
CY2020Q4	fron	Other Liabilities Miscellaneous Noncurrent OtherLiabilitiesMiscellaneousNoncurrent	38000000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	60000000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	96000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	784000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	1215000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	1450000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	1754000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	2345000000	USD
CY2021Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	6218000000	USD
CY2021Q4	fron	Multiemployer Plan Number Of Employee Groups MultiemployerPlanNumberOfEmployeeGroups	7	employee_group
CY2021	us-gaap	Multiemployer Plan Pension Significant Employees Covered By Collective Bargaining Arrangement To All Entitys Employees Percentage MultiemployerPlanPensionSignificantEmployeesCoveredByCollectiveBargainingArrangementToAllEntitysEmployeesPercentage	0.88
CY2021Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	5000000	USD
CY2020Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	4000000	USD
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	456000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	217065096	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	199438098	shares
CY2021Q4	fron	Common Stock Voting Rights Number Of Votes Per Share CommonStockVotingRightsNumberOfVotesPerShare	1	votePerShare
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2020	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1000000	USD
CY2021	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	1000000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.76
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199260410	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199141090	shares
CY2019	us-gaap	Dividends Dividends	166000000	USD
CY2019	us-gaap	Dividends Share Based Compensation DividendsShareBasedCompensation	7000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	159000000	USD
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	27000000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	1000000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	1000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-102000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-225000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	251000000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	14000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-102000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-225000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	237000000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	211436542	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199260410	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	199141090	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.48
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.13
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.19
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-102000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-225000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	251000000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	14000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-102000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-225000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	237000000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	211436542	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	199593100	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.48
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.13
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.19
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	233700	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	452010	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	211436542	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	199260410	shares
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-10000000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-134000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19000000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-10000000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-133000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22000000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-32000000	USD
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$ULCC
Frontier Group Holdings, Inc. Stock $ulcc

2021 Q4 Form 10-K Financial Statement

#000167007622000016 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ULCC Frontier Group Holdings, Inc. Stock $ulcc

2021 Q4 Form 10-K Financial Statement

#000167007622000016 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ULCC
Frontier Group Holdings, Inc. Stock $ulcc