Other Events	6 Months Ended
Other Events	Jun. 30, 2025
Other Events [Abstract]
Other Events	Other Events Planned Anglo American Acquisition On November 25, 2024, Peabody entered into definitive agreements (the Purchase Agreements), to acquire from Anglo a portion of the assets and businesses associated with Anglo’s metallurgical coal portfolio in Australia, including Anglo’s interests in the Moranbah North and Grosvenor mines, the Moranbah South development project, the Capcoal complex, the Roper Creek mine and the Dawson complex (comprising the Dawson Main/Central operating mine, the Dawson South operating mine, the Dawson South Exploration project and the Theodore South exploration project, collectively, the Dawson Assets). The Company has agreed to, following the prospective closing of the Anglo acquisition, sell the Dawson Assets to BUMA. The Purchase Agreements required Peabody to acquire the balance, or a portion thereof, of the remaining interest in the Moranbah North and Grosvenor mines upon receipt of a tag-along notice from any joint venture participant (the Tag-Along Notice). On January 15, 2025, Peabody received a Tag-Along Notice pursuant to which Peabody acquired an additional 0.5% interest in the Moranbah North and Grosvenor mines for consideration of up to approximately $13 million. The Purchase Agreements, as adjusted for the receipt of the Tag-Along Notice, contemplate an upfront cash payment of $2.058 billion, including a deposit of $75.0 million paid to Anglo upon execution of the Purchase Agreements, and fixed deferred cash payments totaling $726.0 million that will be payable in annual installments over a four-year period commencing on the first anniversary of the closing date of the acquisition, and additional contingent cash payments capped at $1.004 billion, comprised of (a) royalty payments contingent on the price of coal exceeding agreed-upon thresholds for each of the five years following the closing date of the acquisition and (b) payments contingent on the potential restart of the Grosvenor mine. The total consideration for the acquisition would be up to approximately $3.788 billion if the maximum amounts under the contingencies described above become payable. On May 5, 2025, Peabody announced that it had notified Anglo and BUMA of a Material Adverse Change (MAC) impacting Peabody’s planned acquisition, due to issues involving the Moranbah North Mine, which remains inactive following what was described as a gas ignition event on March 31, 2025. As of July 31, 2025, no credible timetable has been given regarding resumption of sustainable longwall production. Peabody’s understanding of the conditions underground, along with the continued passage of time, has further confirmed that a MAC has occurred under the Purchase Agreements. Peabody has not reached a revised agreement with the seller and intends to provide a further update after the 90-day MAC cure period has expired. Wards Well Acquisition On April 16, 2024, the Company acquired the southern part of the Wards Well tenements (Wards Well) which are adjacent to the Company’s Centurion Mine in Queensland, Australia. The acquisition was accounted for as an asset acquisition. The acquired asset was measured at the cost of the acquisition based on the total consideration, allocated on the basis of relative fair value. The total consideration of $153.4 million, consisting of cash consideration of $134.4 million, cash transaction costs of $9.4 million and the non-cash settlement of existing receivables with the acquiree of $9.6 million, was recorded in “Property, plant, equipment and mine development, net” in the condensed consolidated balance sheets. The agreement also included an initial contingent royalty of up to $200 million. The royalty will only be payable once the Company has recovered its investment and development costs of Wards Well and if the average sales price achieved exceeds certain thresholds. No royalty is payable if the Company does not commence mining Wards Well. The Company will adjust the cost basis of the assets acquired if and when the contingent royalty is paid or becomes payable. Shoal Creek On March 29, 2023, the Company’s Shoal Creek Mine experienced a fire. On June 20, 2023, the Company announced that the Shoal Creek Mine, in coordination with the Mine Safety and Health Administration, had safely completed localized sealing of the affected area of the mine. In October 2023, the Company filed an insurance claim against applicable insurance policies with combined business interruption and property loss limits of $125 million above a $50 million deductible. During June 2024, the Company reached a settlement and recognized a $109.5 million insurance recovery, which the Company included in its results of operations for the three and six months ended June 30, 2024. During the six months ended June 30, 2024, the Company collected $5.6 million of the insurance recovery. Since this portion of the recovery related to equipment damage for which the Company previously recognized a provision for loss, the Company classified the amount within the “Cash Flows From Investing Activities” section of the unaudited condensed consolidated statements of cash flows.