Debt Instrument Unamortized Fair Value Adjustment

No definition available.

Name:	fybr_DebtInstrumentUnamortizedFairValueAdjustment
Namespace Prefix:	fybr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Long Term Debt Fair Value Adjustment

+ References

No definition available.

+ Details

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

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-Publisher FASB
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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt (Long-Term Debt) (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Debt Instrument [Line Items]
New Borrowings	$ 225	$ 1,000	$ 1,200	$ 4,950
Less: Debt Issuance Costs		(13)	(28)
Less: Current Portion		(15)	(15)
Plus: Unamortized fair value adjustments		219	190
Long-term debt		7,968	9,110
Long-term debt, fair value adjustment	(236)
Amortization	$ 1	$ (18)	$ (28)	$ 5
Weighted average interest rate		5.702%	6.76%
Secured Debt Issued By Frontier [Member]
Debt Instrument [Line Items]
Principal debt outstanding, beginning			$ 6,927
Principal Payments and Retirements			(14)
New Borrowings			1,200
Principal debt outstanding, ending		$ 6,927	$ 8,113
Interest Rate			6.726%
Secured Debt Issued By Subsidiaries [Member]
Debt Instrument [Line Items]
Principal debt outstanding, beginning			$ 100
Principal debt outstanding, ending		100	$ 100
Interest Rate			8.50%
Unsecured Debt Issued By Subsidiaries [Member]
Debt Instrument [Line Items]
Principal debt outstanding, beginning			$ 750
Principal debt outstanding, ending		750	$ 750
Interest Rate			6.899%
Debt Prior To Reclassification To Liabilities Subject To Compromise [Member]
Debt Instrument [Line Items]
Principal debt outstanding, beginning			$ 7,777
Principal Payments and Retirements			(14)
New Borrowings			1,200
Principal debt outstanding, ending		$ 7,777	$ 8,963
Interest Rate			6.76%