XML 98 R74.htm IDEA: XBRL DOCUMENT v3.10.0.1

Debt Securities (Details) - USD ($)	Sep. 18, 2017	Apr. 03, 2017	Apr. 01, 2017	Feb. 15, 2017
Fresh-Start Adjustment [Line Items]
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ 950,000,000
Effect of Plan
Fresh-Start Adjustment [Line Items]
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ 903,200,000
6.000% Senior Secured Notes due March 2022 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Principal amount				$ 500,000,000.0
Stated interest rate				6.00%
6.375% Senior Secured Notes due March 2025 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Principal amount				$ 500,000,000.0
Stated interest rate				6.375%
Successor Credit Agreement | Senior Secured Term Loan due 2025, net of original issue discount | Effect of Plan
Fresh-Start Adjustment [Line Items]
Principal amount		$ 950,000,000
10.00% Senior Secured Second Lien Notes due March 2022 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Stated interest rate			10.00%
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ (1,000,000,000.0)
6.50% Senior Notes due September 2020 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Stated interest rate			6.50%
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ (650,000,000.0)
6.00% Senior Notes due November 2018 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Stated interest rate			6.00%
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ (1,518,800,000.0)
6.25% Senior Notes due November 2021 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Stated interest rate			6.25%
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ (1,339,600,000.0)
7.875% Senior Notes due November 2026 | Senior Notes | Effect of Plan
Fresh-Start Adjustment [Line Items]
Stated interest rate			7.875%
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			$ (250,000,000.0)
Convertible Junior Subordinated Debentures Due December 2006 [Member] | Subordinated Debt | Effect of Plan
Fresh-Start Adjustment [Line Items]
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt			(732,500,000.0)
2013 Term Loan Facility | Senior Secured Term Loan due 2025, net of original issue discount | Effect of Plan
Fresh-Start Adjustment [Line Items]
Credit facility canceled			1,170,000,000
2013 Revolver | Effect of Plan
Fresh-Start Adjustment [Line Items]
Credit facility canceled			947,000,000
2013 Revolver | 2013 Revolver | Effect of Plan
Fresh-Start Adjustment [Line Items]
Credit facility canceled			1,650,000,000
2013 Revolver | Letter of credit | Effect of Plan
Fresh-Start Adjustment [Line Items]
Credit facility canceled			$ 675,000,000
London Interbank Offered Rate (LIBOR) | Successor Credit Agreement | Senior Secured Term Loan due 2025, net of original issue discount | Effect of Plan
Fresh-Start Adjustment [Line Items]
Basis spread on variable rate	2.75%	4.50%
Floor interest rate		1.00%

X

- Definition

Debt Instrument, Floor Interest Rate

+ References

No definition available.

+ Details

Name:	btu_DebtInstrumentFloorInterestRate
Namespace Prefix:	btu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Total fresh-start adjustment to long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

+ Details

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

X

- Definition

Amount of fresh-start adjustment to postconfirmation credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

+ Details

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

X

- 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_FreshStartAdjustmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=btu_EffectofReorganizationPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A6.000SeniorSecuredNotesDue2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A6.375SeniorSecuredNotesDue2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A10.00SeniorSecuredSecondLienNotesDue2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A6.50SeniorNotesdueSeptember2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A6.00SeniorNotesdueNovember2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A6.25SeniorNotesdueNovember2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A7.875SeniorNotesdueNovember2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_ConvertibleJuniorSubordinatedDebenturesDueDecember2066Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A2013TermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=btu_A2013RevolverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: