Segment Information - Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 1,012.1	$ 1,088.0	$ 2,839.2	$ 3,113.6
Total Segment Excluding Corporate and Other Operating Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total reportable segment revenue	995.0	1,077.7	2,802.6	3,080.0
Corporate and Other (1)
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 17.1	$ 10.3	$ 36.6	$ 33.6

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details

PEABODY ENERGY CORP 10-Q