XML 37 R25.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Derivative Instruments and Hedging Activities (Policies) | 9 Months Ended
--- | ---
Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Corporate Hedging - Coal Trading | Generally, the Company’s Level 3 instruments or contracts are valued using bid/ask price quotations and other market assessments obtained from multiple, independent third-party brokers or other transactional data incorporated into internally-generated discounted cash flow models. Decreases in the number of third-party brokers or market liquidity could erode the quality of market information and therefore the valuation of the Company’s market positions. The Company’s valuation techniques include basis adjustments to the foregoing price inputs for quality, such as sulfur and ash content, location differentials, expressed as port and freight costs, and credit risk. The Company’s risk management function independently validates the Company’s valuation inputs, including unobservable inputs, with third-party information and settlement prices from other sources where available. A daily process is performed to analyze market price changes and changes to the portfolio. Further periodic validation occurs at the time contracts are settled with the counterparty. These valuation techniques have been consistently applied in all periods presented, and the Company believes it has obtained the most accurate information available for the types of derivative contracts held.Significant increases or decreases in the inputs in isolation could result in a significantly higher or lower fair value measurement. The unobservable inputs do not have a direct interrelationship; therefore, a change in one unobservable input would not necessarily correspond with a change in another unobservable input.
Fair Value, Assets, Transfers Between Levels | The Company’s policy is to value all transfers between levels using the beginning of period valuation.
Corporate Hedging | From time to time, the Company may utilize various types of derivative instruments to manage its exposure to risks in the normal course of business, including (1) foreign currency exchange rate risk and the variability of cash flows associated with forecasted Australian dollar expenditures made in its Australian mining platform, (2) price risk of fluctuating coal prices related to forecasted sales or purchases of coal, or changes in the fair value of a fixed price physical sales contract, (3) price risk and the variability of cash flows related to forecasted diesel fuel purchased for use in its operations and (4) interest rate risk on long-term debt. These risk management activities are actively monitored for compliance with the Company’s risk management policies. On a limited basis, the Company engages in the direct and brokered trading of coal and freight-related contracts. Except those contracts for which the Company has elected to apply a normal purchases and normal sales exception, all derivative coal trading contracts are accounted for at fair value. The Company had no diesel fuel or interest rate derivatives in place as of September 30, 2022. Foreign Currency Option Contracts

X
- Definition Corporate Hedging - Coal Trading [Policy Text Block] + References No definition available. + Details
Name: | btu_CorporateHedgingCoalTradingPolicyTextBlock
Namespace Prefix: | btu_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Corporate Hedging [Policy Text Block] + References No definition available. + Details
Name: | btu_CorporateHedgingPolicyTextBlock
Namespace Prefix: | btu_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value, Assets, Transfers Between Levels [Policy Text Block] + References No definition available. + Details
Name: | btu_FairValueAssetsTransfersBetweenLevelsPolicyTextBlock
Namespace Prefix: | btu_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration