Commitments and Contingencies	9 Months Ended
Sep. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments Unconditional Purchase Obligations As of September 30, 2026, purchase commitments for capital expenditures were $37.3 million, all of which is obligated within the next 12 months. There were no other material changes to the Company’s commitments from the information provided in Note 20. “Commitments and Contingencies” to the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. Contingencies From time to time, the Company or its subsidiaries are involved in legal proceedings arising in the ordinary course of business or related to indemnities or historical operations. The Company believes it has recorded adequate reserves for these liabilities. The Company discusses its significant legal proceedings below, including ongoing proceedings and those that impacted the Company’s consolidated results of operations for the periods presented. Litigation and Matters Relating to Continuing Operations Arbitration Relating to Terminated Anglo American plc (Anglo) Acquisition. On November 25, 2024, Peabody entered into definitive agreements (the Purchase Agreements) to acquire from Anglo certain assets and businesses associated with Anglo’s metallurgical coal portfolio in Australia (collectively, the Assets), 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 agreed to, following the prospective closing of the Anglo acquisition, sell the Dawson Assets to Pt Bukit Makmur Mandiri Utama or one of its subsidiaries. On August 19, 2025, Peabody terminated the Purchase Agreements. The termination of the Purchase Agreements followed Peabody’s prior delivery of a notice of a Material Adverse Change (MAC) as a result of an ignition event at the Moranbah North mine on March 31, 2025, which had led to the closure of the mine. Following Peabody’s termination of the Purchase Agreements, Anglo returned $29.0 million of the $75.0 million deposit previously paid by Peabody, and Peabody has demanded the outstanding $46.0 million of the deposit also be returned. On September 23, 2025, various subsidiaries of Anglo initiated International Chamber of Commerce arbitration proceedings in London, United Kingdom, against Peabody and certain of its affiliates. At that time, Anglo’s complaint alleged, among other things, that Peabody wrongfully terminated the Purchase Agreements and sought, among other things, declarations that the ignition event at the Moranbah North mine did not constitute a MAC, as well as damages for losses in an unspecified amount, plus costs and interest. On June 5, 2026, Anglo filed its Statement of Claim, in which it purported to quantify, for the first time in the arbitration proceedings, the damages that it is demanding at approximately $755.0 million. This amount primarily consists of $628.4 million in claimed losses, representing what Anglo contends is the difference in value of the Assets between November 25, 2024 and August 19, 2025, with the remainder consisting of Anglo’s claimed additional costs and interest on such claimed losses and costs. On October 2, 2026, Peabody filed its Statement of Defense and Counterclaim in the arbitration. In its filing, Peabody denied Anglo’s allegations, asserted various defenses and brought counterclaims against Anglo and certain of its affiliates. Peabody disputes Anglo’s allegations in the arbitration proceedings and submits it properly terminated the Purchase Agreements. With respect to Anglo’s calculation of its supposed damages, Peabody believes it is fundamentally flawed for several reasons, including because Anglo’s calculation assumes that the substantial portion of any loss in value is not attributable to the MAC and specifically the ignition event at Moranbah North. In this regard, Peabody remains confident that a MAC occurred, and that it was entitled to terminate the Purchase Agreements. However, while Peabody strongly disagrees with Anglo’s claim that the ignition event at the Moranbah North mine did not constitute a MAC, it is reasonably possible that the Company may incur a loss in connection with Anglo’s claim. That said, given Peabody’s strong view that it was entitled to terminate the Purchase Agreements, as well as the fundamental disagreement over the basis for Anglo’s calculation of its alleged damages, Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter. In addition, Peabody expects to receive the remaining $46.0 million purchase deposit under the termination provisions of the Purchase Agreements. A final hearing in the arbitration proceedings is scheduled for September 2027. Shareholder Action. On June 25, 2026, a putative class action lawsuit, McGeachy v. Peabody Energy Corp., et al., was filed against the Company and certain current/former executives (together the Securities Defendants) in the United States District Court for the Eastern District of Missouri (the Court) on behalf of a putative class of investors who purchased or otherwise acquired Peabody Energy common stock from October 14, 2024 to May 4, 2026. The lawsuit alleges that the Securities Defendants made certain misstatements or omissions in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, (the Exchange Act) regarding the Company’s ability to resume longwall production at the Centurion mine. On September 9, 2026, the Court appointed a lead plaintiff and lead counsel. On September 25, 2026, the Court entered a schedule under which plaintiffs must file an amended complaint by November 20, 2026, and the Securities Defendants must move against or otherwise respond to the amended complaint by January 22, 2027. The Securities Defendants intend to defend themselves vigorously. Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter. On September 10, 2026, a putative derivative lawsuit, Marti v Grech, et al., was filed against the Company (as nominal defendant) and certain of the Company’s current/former officers and directors (the Derivative Defendants) in the United States District Court for the Eastern District of Missouri. Plaintiff alleges, putatively on behalf of the Company, that some or all of the Derivative Defendants are liable for breaches of their fiduciary duties, unjust enrichment, abuse of control, gross mismanagement, waste of corporate assets, violations of Sections 10(b), 20(a), and 14(a) of the Exchange Act, and for contribution under Sections 10(b) and 21D of the Exchange Act, for allegedly causing the Company to make false and misleading statements about the Company’s efforts to resume longwall production at the Centurion mine and the associated financial guidance. The Company and the Derivative Defendants intend to defend themselves vigorously. Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter. Other At times, the Company becomes a party to other disputes, including those related to contract miner performance, claims, lawsuits, arbitration proceedings, regulatory investigations and administrative procedures in the ordinary course of business in the U.S., Australia and other countries where the Company does business. Based on current information, the Company believes that such other pending or threatened proceedings are likely to be resolved without a material adverse effect on its consolidated financial condition, results of operations or cash flows. The Company reassesses the probability and the ability to estimate contingent losses as new information becomes available.

There were no other material changes to the Company’s commitments from the information provided in Note 20. “Commitments and Contingencies” to the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

From time to time, the Company or its subsidiaries are involved in legal proceedings arising in the ordinary course of business or related to indemnities or historical operations. The Company believes it has recorded adequate reserves for these liabilities. The Company discusses its significant legal proceedings below, including ongoing proceedings and those that impacted the Company’s consolidated results of operations for the periods presented.

Arbitration Relating to Terminated Anglo American plc (Anglo) Acquisition. On November 25, 2024, Peabody entered into definitive agreements (the Purchase Agreements) to acquire from Anglo certain assets and businesses associated with Anglo’s metallurgical coal portfolio in Australia (collectively, the Assets), 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 agreed to, following the prospective closing of the Anglo acquisition, sell the Dawson Assets to Pt Bukit Makmur Mandiri Utama or one of its subsidiaries.

On August 19, 2025, Peabody terminated the Purchase Agreements. The termination of the Purchase Agreements followed Peabody’s prior delivery of a notice of a Material Adverse Change (MAC) as a result of an ignition event at the Moranbah North mine on March 31, 2025, which had led to the closure of the mine. Following Peabody’s termination of the Purchase Agreements, Anglo returned $29.0 million of the $75.0 million deposit previously paid by Peabody, and Peabody has demanded the outstanding $46.0 million of the deposit also be returned.

On September 23, 2025, various subsidiaries of Anglo initiated International Chamber of Commerce arbitration proceedings in London, United Kingdom, against Peabody and certain of its affiliates. At that time, Anglo’s complaint alleged, among other things, that Peabody wrongfully terminated the Purchase Agreements and sought, among other things, declarations that the ignition event at the Moranbah North mine did not constitute a MAC, as well as damages for losses in an unspecified amount, plus costs and interest. On June 5, 2026, Anglo filed its Statement of Claim, in which it purported to quantify, for the first time in the arbitration proceedings, the damages that it is demanding at approximately $755.0 million. This amount primarily consists of $628.4 million in claimed losses, representing what Anglo contends is the difference in value of the Assets between November 25, 2024 and August 19, 2025, with the remainder consisting of Anglo’s claimed additional costs and interest on such claimed losses and costs. On October 2, 2026, Peabody filed its Statement of Defense and Counterclaim in the arbitration. In its filing, Peabody denied Anglo’s allegations, asserted various defenses and brought counterclaims against Anglo and certain of its affiliates.

Peabody disputes Anglo’s allegations in the arbitration proceedings and submits it properly terminated the Purchase Agreements. With respect to Anglo’s calculation of its supposed damages, Peabody believes it is fundamentally flawed for several reasons, including because Anglo’s calculation assumes that the substantial portion of any loss in value is not attributable to the MAC and specifically the ignition event at Moranbah North. In this regard, Peabody remains confident that a MAC occurred, and that it was entitled to terminate the Purchase Agreements. However, while Peabody strongly disagrees with Anglo’s claim that the ignition event at the Moranbah North mine did not constitute a MAC, it is reasonably possible that the Company may incur a loss in connection with Anglo’s claim. That said, given Peabody’s strong view that it was entitled to terminate the Purchase Agreements, as well as the fundamental disagreement over the basis for Anglo’s calculation of its alleged damages, Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter. In addition, Peabody expects to receive the remaining $46.0 million purchase deposit under the termination provisions of the Purchase Agreements.

Shareholder Action. On June 25, 2026, a putative class action lawsuit, McGeachy v. Peabody Energy Corp., et al., was filed against the Company and certain current/former executives (together the Securities Defendants) in the United States District Court for the Eastern District of Missouri (the Court) on behalf of a putative class of investors who purchased or otherwise acquired Peabody Energy common stock from October 14, 2024 to May 4, 2026. The lawsuit alleges that the Securities Defendants made certain misstatements or omissions in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, (the Exchange Act) regarding the Company’s ability to resume longwall production at the Centurion mine. On September 9, 2026, the Court appointed a lead plaintiff and lead counsel. On September 25, 2026, the Court entered a schedule under which plaintiffs must file an amended complaint by November 20, 2026, and the Securities Defendants must move against or otherwise respond to the amended complaint by January 22, 2027. The Securities Defendants intend to defend themselves vigorously. Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter.

On September 10, 2026, a putative derivative lawsuit, Marti v Grech, et al., was filed against the Company (as nominal defendant) and certain of the Company’s current/former officers and directors (the Derivative Defendants) in the United States District Court for the Eastern District of Missouri. Plaintiff alleges, putatively on behalf of the Company, that some or all of the Derivative Defendants are liable for breaches of their fiduciary duties, unjust enrichment, abuse of control, gross mismanagement, waste of corporate assets, violations of Sections 10(b), 20(a), and 14(a) of the Exchange Act, and for contribution under Sections 10(b) and 21D of the Exchange Act, for allegedly causing the Company to make false and misleading statements about the Company’s efforts to resume longwall production at the Centurion mine and the associated financial guidance. The Company and the Derivative Defendants intend to defend themselves vigorously. Peabody is unable to provide a reasonable estimate of any possible loss or range of loss relating to this matter.

At times, the Company becomes a party to other disputes, including those related to contract miner performance, claims, lawsuits, arbitration proceedings, regulatory investigations and administrative procedures in the ordinary course of business in the U.S., Australia and other countries where the Company does business. Based on current information, the Company believes that such other pending or threatened proceedings are likely to be resolved without a material adverse effect on its consolidated financial condition, results of operations or cash flows. The Company reassesses the probability and the ability to estimate contingent losses as new information becomes available.