XML 106 R82.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Reorganization Items, Net (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 01, 2017 | Mar. 31, 2018 | Apr. 01, 2017 | Mar. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2016
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Adjustment, Reorganization Gain, Net | $ (3,031.2) |  |  |  |  |  |
Legal and Advisory Professional Fees | 336.4 |  |  |  |  |  |
Payments of Reorganization Professional Fees | 8.3 |  |  |  |  |  |
Predecessor |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Adjustment, Reorganization Gain, Net |  |  | $ (3,031.2) |  |  |  | $ 0.0
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, before Tax |  |  | 3,363.1 |  |  |  | 0.0
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense |  |  | 253.9 |  |  |  | 0.0
Net Loss on Rejection of Leases and Other Executory Contracts |  |  | 0.0 |  |  |  | 75.2
Legal and Advisory Professional Fees |  |  | 42.5 |  |  |  | 88.4
Gain on Settlement of Other Claims, Net |  |  | (0.7) |  |  |  | (1.8)
Interest Income on Accumulated Cash |  |  | (0.4) |  |  |  | (1.8)
Other Expense (Income) |  |  | 0.0 |  |  |  | (1.0)
Reorganization Items, net | 585.8 |  | 627.2 | $ 41.4 |  |  | 159.0
Payments for Reorganization Items, Net |  |  | $ 45.8 |  |  |  | $ 68.1
Predecessor | Income Tax Effect Related to Predecessor Deferred Tax Liabilities [Member] |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense | 177.8 |  |  |  |  |  |
Predecessor | Income Tax Effect Related to AOCI [Member] |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense | 81.5 |  |  |  |  |  |
Predecessor | Income Tax Effect Related to Unrecognized Tax Benefits [Member] |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense | 6.7 |  |  |  |  |  |
Predecessor | Income Tax Effect Related to Predecessor Deferred Tax Assets of Discontinued Operations [Member] |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense | $ (12.1) |  |  |  |  |  |
Successor |  |  |  |  |  |  |
Fresh-Start Adjustment [Line Items] |  |  |  |  |  |  |
Fresh-Start Adjustment, Reorganization Gain, Net |  |  |  |  |  | $ (12.8) |
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, before Tax |  |  |  |  |  | 0.0 |
Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense |  |  |  |  |  | 0.0 |
Net Loss on Rejection of Leases and Other Executory Contracts |  |  |  |  |  | 0.0 |
Legal and Advisory Professional Fees |  |  |  |  |  | 0.0 |
Gain on Settlement of Other Claims, Net |  |  |  |  |  | 0.0 |
Interest Income on Accumulated Cash |  |  |  |  |  | 0.0 |
Other Expense (Income) |  |  |  |  |  | 0.0 |
Reorganization Items, net |  | $ 12.8 |  |  | $ 0.0 | (12.8) |
Payments for Reorganization Items, Net |  |  |  |  |  | $ 0.0 |

X
- Definition Debtor Reorganization Items, Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity, before Tax + References No definition available. + Details
Name: | btu_DebtorReorganizationItemsFreshStartAdjustmentIncreaseDecreaseStockholdersEquitybeforeTax
Namespace Prefix: | btu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Debtor Reorganization Items, Fresh-Start Income Tax Adjustments, Increase (Decrease) in Expense + References No definition available. + Details
Name: | btu_DebtorReorganizationItemsFreshStartIncomeTaxAdjustmentsIncreaseDecreaseinExpense
Namespace Prefix: | btu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fresh-Start Adjustment, Reorganization Gain (Loss), Net + References No definition available. + Details
Name: | btu_FreshStartAdjustmentReorganizationGainLossNet
Namespace Prefix: | btu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payments for Reorganization Items, Net + References No definition available. + Details
Name: | btu_PaymentsforReorganizationItemsNet
Namespace Prefix: | btu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payments of Reorganization Professional Fees + References No definition available. + Details
Name: | btu_PaymentsofReorganizationProfessionalFees
Namespace Prefix: | btu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of net gain (loss) on settlement of other claims for entities in bankruptcy, reported as a reorganization item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
Name: | us-gaap_DebtorReorganizationItemsGainLossOnSettlementOfOtherClaimsNet1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest income on accumulated cash, reported as a reorganization item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 + Details
Name: | us-gaap_DebtorReorganizationItemsInterestIncomeOnAccumulatedCash1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
Name: | us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) on rejection of leases and other executory contracts, reported as a reorganization item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 + Details
Name: | us-gaap_DebtorReorganizationItemsNetGainLossOnRejectionOfLeasesAndOtherExecutoryContracts1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expense (income) related to reorganization items classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 + Details
Name: | us-gaap_DebtorReorganizationItemsOtherExpenseIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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
- Definition Total amount of reorganization items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 + Details
Name: | us-gaap_ReorganizationItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=btu_IncomeTaxEffectRelatedtoPredecessorDeferredTaxLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=btu_IncomeTaxEffectRelatedtoAOCIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=btu_IncomeTaxEffectRelatedtoUnrecognizedTaxBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis=btu_IncomeTaxEffectRelatedtoPredecessorDeferredTaxAssetsofDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_SuccessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |