Debtor Reorganization Items, Write-Off Of Long-Term Debt Fees

No definition available.

Name:	ihrt_DebtorReorganizationItemsWriteOffOfLongTermDebtFees
Namespace Prefix:	ihrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Liabilities Subject To Compromise, Debt

+ References

No definition available.

+ Details

Name:	ihrt_LiabilitiesSubjectToCompromiseDebt
Namespace Prefix:	ihrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num: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
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount debtor-in-possession financing arranged (but not necessarily all borrowed).

+ References

No definition available.

+ Details

Name:	us-gaap_DebtorInPossessionFinancingAmountArranged
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=114872137&loc=d3e55730-112764

+ Details

Name:	us-gaap_DebtorReorganizationItemsWriteOffOfDeferredFinancingCostsAndDebtDiscounts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_SecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_TermLoanFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_DebtorsInPossessionToExitFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=ihrt_AvailabilityBlockRequirementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PriorityGuaranteeNotesDue2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PriorityGuaranteeNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PriorityGuaranteeNotesDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PriorityGuaranteeNotesDue2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PriorityGuaranteeNotesDue2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_CCOReceivablesBasedCreditFacilityDue2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_OtherSecuredSubsidiaryLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_SeniorNotesDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_IheartcommunicationsLegacyNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_SubisidarySeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_SubsidiarySeniorSubordinatedNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_SubsidiarySeniorSubordinatedNotesdue2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_ClearChannelInternationalBvSeniorNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_OtherIheartcommunicationsSubsidiaryDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_PurchaseAccountingAdjustmentsAndOriginalIssueDiscountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_CcwhSeniorASubordinatedNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ihrt_SubisidarySeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_CcwhSeniorBSubordinatedNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_NewCCWHSubordinatedNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_LegacyNotesDue2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_LegacyNotesDue2027Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=ihrt_LegacyNotesDue2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=ihrt_LiabilitiesSubjectToCompromiseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LONG-TERM DEBT - Schedule Of Long-Term Debt Outstanding (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Feb. 04, 2019	Dec. 31, 2018	Jun. 14, 2018	Mar. 26, 2018
Debt Instrument [Line Items]
Total consolidated secured debt	$ 3,828,000			$ 3,882,000
Long-term debt	20,483,862,000			20,472,917,000
Long-term debt fees	(44,322,000)			(25,808,000)
Long-term debt, net subject to compromise	15,143,713,000			15,149,477,000
Less: Current portion	46,744,000			46,332,000
Total long-term debt	5,293,405,000			5,277,108,000
Additional borrowed on receivables based credit facility	0	$ 25,333,000
Borrowings repaid under receivables based credit facility	0	59,000,000
Write-off of deferred long-term debt fees	0	54,670,000
Write-off of original issue discount on debt subject to compromise	0	$ 131,100,000
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Total consolidated secured debt	0			0
DIP Facility
Debt Instrument [Line Items]
Total consolidated secured debt	0			0
DIP Facility \| Line of Credit
Debt Instrument [Line Items]
Maximum borrowings provided under credit facility	426,800,000.0
Outstanding borrowings under facility	0
Letters of credit outstanding	59,000,000
Line of credit, excess availability	330,300,000
DIP Facility \| Line of Credit \| Availability Block Requirement
Debt Instrument [Line Items]
Line of credit, excess availability	37,500,000
DIP Facility \| Line of Credit \| Subsidiary
Debt Instrument [Line Items]
DIP Facility, aggregate principal amount					$ 450,000,000.0
9.0% Priority Guarantee Notes Due 2019
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
Stated interest rate	9.00%
9.0% Priority Guarantee Notes Due 2021
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
Stated interest rate	9.00%
11.25% Priority Guarantee Notes Due 2021
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
Stated interest rate	11.25%
9.0% Priority Guarantee Notes Due 2022
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
Stated interest rate	9.00%
10.625% Priority Guarantee Notes Due 2023
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
Stated interest rate	10.625%
CCO Receivables Based Credit Facility Due 2023
Debt Instrument [Line Items]
Total consolidated secured debt	$ 0			0
CCO Receivables Based Credit Facility Due 2023 \| Subsidiary \| Revolving credit commitment
Debt Instrument [Line Items]
Maximum borrowings provided under credit facility	125,000,000.0
CCO Receivables Based Credit Facility Due 2023 \| Line of Credit \| Subsidiary \| Revolving credit commitment
Debt Instrument [Line Items]
Maximum borrowings provided under credit facility	116,200,000.0
Letters of credit outstanding	85,500,000
Line of credit, excess availability	30,700,000
Other secured subsidiary debt
Debt Instrument [Line Items]
Total consolidated secured debt	3,828,000			3,882,000
14.0% Senior Notes Due 2021
Debt Instrument [Line Items]
Long-term debt	$ 0			0
Stated interest rate	14.00%					14.00%
Legacy Notes
Debt Instrument [Line Items]
Long-term debt	$ 0			0
CCWH Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt	2,725,000,000			2,725,000,000
CCWH Subordinated Notes due 2020(5)
Debt Instrument [Line Items]
Long-term debt	0			2,200,000,000
CCWH Subordinated Notes due 2024(5)
Debt Instrument [Line Items]
Long-term debt	2,235,000,000			0
Clear Channel International B.V. Senior Notes due 2020
Debt Instrument [Line Items]
Long-term debt	375,000,000			375,000,000
Other subsidiary debt
Debt Instrument [Line Items]
Long-term debt	46,510,000			46,105,000
Purchase accounting adjustments and original issue discount
Debt Instrument [Line Items]
Long-term debt	$ (867,000)			$ (739,000)
CCWH Senior A Subordinated Notes Due 2020 \| CCWH Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt			$ 275,000,000
Stated interest rate			7.625%
CCWH Senior B Subordinated Notes Due 2020 \| CCWH Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt			$ 1,925,000,000
Stated interest rate			7.625%
New CCWH Subordinated Notes \| CCWH Senior Notes due 2022
Debt Instrument [Line Items]
Long-term debt			$ 2,235,000,000
Stated interest rate			9.25%
Legacy Notes Due 2018 \| Senior Notes \| Subsidiary
Debt Instrument [Line Items]
Stated interest rate	6.875%
Senior notes	$ 175,000,000
Legacy Notes Due 2027 \| Senior Notes \| Subsidiary
Debt Instrument [Line Items]
Stated interest rate	7.25%
Senior notes	$ 300,000,000
Legacy Notes Due 2016 \| Senior Notes \| Subsidiary
Debt Instrument [Line Items]
Stated interest rate	5.50%
Senior notes	$ 57,100,000.0
Liabilities Subject To Compromise \| Senior Secured Credit Facilities
Debt Instrument [Line Items]
Total consolidated secured debt	6,300,000,000
Liabilities Subject To Compromise \| 9.0% Priority Guarantee Notes Due 2019
Debt Instrument [Line Items]
Total consolidated secured debt	1,999,800,000
Liabilities Subject To Compromise \| 9.0% Priority Guarantee Notes Due 2021
Debt Instrument [Line Items]
Total consolidated secured debt	1,750,000,000
Liabilities Subject To Compromise \| 11.25% Priority Guarantee Notes Due 2021
Debt Instrument [Line Items]
Total consolidated secured debt	870,500,000
Liabilities Subject To Compromise \| 9.0% Priority Guarantee Notes Due 2022
Debt Instrument [Line Items]
Total consolidated secured debt	1,000,000,000
Liabilities Subject To Compromise \| 10.625% Priority Guarantee Notes Due 2023
Debt Instrument [Line Items]
Total consolidated secured debt	950,000,000
Liabilities Subject To Compromise \| Other secured subsidiary debt
Debt Instrument [Line Items]
Total consolidated secured debt	6,000,000
Liabilities Subject To Compromise \| 14.0% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior notes	1,781,600,000.0
Liabilities Subject To Compromise \| Legacy Notes
Debt Instrument [Line Items]
Senior notes	475,000,000
Liabilities Subject To Compromise \| Other subsidiary debt
Debt Instrument [Line Items]
Senior notes	$ 10,800,000.0