Segment Information - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Reportable segment results
Revenues	$ 1,012.1	$ 1,088.0	$ 2,839.2	$ 3,113.6
Segment Adjusted EBITDA excluding corporate and other segment	127.4	227.9	374.8	734.1
Loss from equity affiliates	2.6	2.1	10.2	7.1
Additions to property, plant, equipment and mine development	116.2	98.7	280.8	265.7
Shoal Creek insurance recovery	0.0	0.0	0.0	109.5
Seaborne Thermal
Reportable segment results
Revenues	242.7	313.2	702.9	904.6
Labor costs	35.8	38.8	108.6	117.9
Repair costs	29.3	44.6	83.1	118.5
Outside services	31.2	35.4	84.9	97.7
Commodities expense	20.6	23.0	59.6	69.4
Sales related costs	54.0	57.8	153.4	162.5
Other expenses	30.8	(6.4)	54.6	20.4
Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization	41.0	120.0	158.7	318.2
Additions to property, plant, equipment and mine development	8.2	17.4	26.3	50.1
Seaborne Metallurgical
Reportable segment results
Revenues	258.9	242.5	731.2	783.8
Labor costs	62.4	54.1	178.7	155.8
Repair costs	48.5	63.3	136.9	139.5
Outside services	100.4	77.0	258.3	186.3
Commodities expense	17.1	14.8	43.1	46.4
Sales related costs	56.1	52.9	168.8	166.9
Other expenses	(53.4)	(47.4)	(86.4)	(130.8)
Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization	27.8	27.8	31.8	219.7
Additions to property, plant, equipment and mine development	87.8	64.5	213.9	179.7
Shoal Creek insurance recovery		80.8		80.8
Powder River Basin
Reportable segment results
Revenues	301.4	305.3	852.7	781.3
Labor costs	56.5	50.9	159.2	152.2
Repair costs	38.8	33.9	102.9	94.9
Outside services	35.0	31.9	94.9	89.8
Commodities expense	42.3	41.7	116.8	117.2
Sales related costs	66.2	82.5	215.4	212.6
Other expenses	10.9	12.7	32.5	28.7
Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization	51.7	51.7	131.0	85.9
Additions to property, plant, equipment and mine development	11.5	9.8	20.9	22.3
Other U.S. Thermal
Reportable segment results
Revenues	192.0	216.7	515.8	610.3
Labor costs	54.3	54.8	153.4	162.8
Repair costs	40.5	36.7	114.2	104.9
Outside services	40.8	36.5	114.2	109.5
Commodities expense	19.2	19.2	56.4	58.3
Sales related costs	11.5	14.3	30.9	40.0
Other expenses	18.8	26.8	(6.6)	24.5
Segment Reporting Information Adjusted Earning Before Interest Taxes Depreciation And Amortization	6.9	28.4	53.3	110.3
Additions to property, plant, equipment and mine development	7.7	4.9	17.7	10.0
Total Segment Excluding Corporate and Other Operating Segment
Reportable segment results
Segment Adjusted EBITDA excluding corporate and other segment	127.4	227.9	374.8	734.1
Additions to property, plant, equipment and mine development excluding corporate and other segment	115.2	96.6	278.8	262.1
Total reportable segment revenue	$ 995.0	$ 1,077.7	$ 2,802.6	$ 3,080.0

PEABODY ENERGY CORP 10-Q