Information by Segment and Geographic Area (Tables)

12 Months Ended

Dec. 31, 2025

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Countries with revenues from unaffiliated customers or net PP&E of 10% or more of the consolidated totals for at least one of the periods presented below are as follows:


	Revenues from Unaffiliated Customers
	Years ended December 31
(In thousands)	2025		2024		2023
By geographic location (a):
U.S.	$	1,283,489	$	1,341,287	$	1,405,398


International	956,869		1,001,850		960,789
Total revenues from unaffiliated customers	$	2,240,358	$	2,343,137	$	2,366,187

(a) Revenues are attributed to individual countries based on the location of the facility generating the revenue.

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]


	Property, Plant and Equipment, Net
	December 31
(In thousands)	2025		2024
By geographic location:
U.S.	$	362,085	$	338,679



International	337,579		325,613
Total property, plant and equipment, net	$	699,664	$	664,292

Schedule of Segment Operating Information by Segment

Operating Information by Segment

The accounting policies for the three reportable segments are consistently applied, as described in Note 1, Summary of Significant Accounting Policies. The Company's chief operating decision maker (the "CODM") is the Company's Chairman and Chief Executive Officer. The CODM uses segment operating income/(loss) from continuing operations as the profit measure to evaluate segment performance and allocate resources across segments. Corporate unallocated expenses, interest income, interest expense, facility fees and debt-related income (expense) and defined benefit pension income (expense) are centrally managed costs and are, therefore, excluded from this profit measure to provide better understanding of the Company's segment operating results. The CODM considers variances of actual performance to the Company's annual operating plan and periodic forecasts when making decisions.

The following tables include information about the Company's revenues and operating income (loss) by reporting segment, along with significant segment expenses and other segment information, for the years ended December 31, 2025, 2024 and 2023:


	Year Ended December 31, 2025
(in thousands)	Harsco Environmental	Clean Earth	Harsco Rail	Total Segment		Corporate	Total
Segment Profit and Loss:
Total revenues	1,019,411	973,853	247,094	$	2,240,358	—	$	2,240,358
Less:
Cost of services and products sold (a)	857,777	711,666	251,108	1,820,551		155	1,820,706
Selling, general and administrative expenses	105,402	169,728	46,953	322,083		59,922	382,005

Property, plant and equipment impairment charge	7,797	—	—	7,797		—	7,797


Other segment items (a)(b)	6,258	797	6,410	13,465		12,136	25,601

Operating income (loss) from continuing operations	42,177	91,662	(57,377)	$	76,462	(72,213)	$	4,249
Plus:
Interest income							2,191
Interest expense							(110,962)
Facility fees and debt-related income (expense)							(10,662)
Defined benefit pension income (expense)							(21,635)

Income (loss) from continuing operations before income taxes and equity income							$	(136,819)

Other Segment Information:
Depreciation	108,168	39,778	4,464	$	152,410	972	$	153,382
Amortization (c)	2,242	23,644	713	$	26,599	3,976	$	30,575
Capital expenditures	84,494	49,459	7,117	$	141,070	209	$	141,279
Total assets	1,329,132	1,036,916	333,383	$	2,699,431	9,240	$	2,708,671


	Year Ended December 31, 2024
(in thousands)	Harsco Environmental	Clean Earth	Harsco Rail	Total Segment		Corporate	Total
Segment Profit and Loss:
Total revenues	1,111,512	940,337	291,288	$	2,343,137	—	$	2,343,137
Less:
Cost of services and products sold (a)	948,591	690,160	271,853	1,910,604		—	1,910,604
Selling, general and administrative expenses	113,845	156,378	48,461	318,684		40,704	359,388
Goodwill and other intangible asset impairment charges	2,840	—	13,026	15,866		—	15,866
Property, plant and equipment impairment charge	23,444	—	—	23,444		—	23,444
Remeasurement of long-lived assets	—	—	10,695	10,695		—	10,695
Gain on sale of businesses, net	(10,029)	—	—	(10,029)		(449)	(10,478)
Other segment items (a)(b)	808	1,151	6,808	8,767		(5,863)	2,904

Operating income (loss) from continuing operations	32,013	92,648	(59,555)	$	65,106	(34,392)	$	30,714
Plus:
Interest income							6,795
Interest expense							(112,217)
Facility fees and debt-related income (expense)							(11,265)
Defined benefit pension income (expense)							(17,607)

Income (loss) from continuing operations before income taxes and equity income							$	(103,580)

Other Segment Information:
Depreciation	109,756	33,840	3,478	$	147,074	1,255	$	148,329
Amortization (c)	3,068	23,976	224	$	27,268	4,203	$	31,471
Capital expenditures	98,845	32,754	4,756	$	136,355	236	$	136,591
Total assets	1,263,031	993,107	351,174	$	2,607,312	27,199	$	2,634,511


	Year Ended December 31, 2023
(in thousands)	Harsco Environmental	Clean Earth	Harsco Rail	Total Segment		Corporate	Total
Segment Profit and Loss:
Total revenues	1,141,935	927,457	296,795	$	2,366,187	—	$	2,366,187
Less:
Cost of services and products sold (a)	942,219	694,164	270,996	1,907,379		—	1,907,379
Selling, general and administrative expenses	109,131	154,513	45,770	309,414		44,571	353,985

Property, plant and equipment impairment charge	14,099	—	—	14,099		—	14,099


Other segment items (a)(b)	(2,180)	2,078	4,884	4,782		(1,571)	3,211

Operating income (loss) from continuing operations	78,666	76,702	(24,855)	$	130,513	(43,000)	$	87,513
Plus:
Interest income							6,809
Interest expense							(107,081)
Facility fees and debt-related income (expense)							(10,762)
Defined benefit pension income (expense)							(22,326)

Income (loss) from continuing operations before income taxes and equity income							$	(45,847)

Other Segment Information:
Depreciation	113,571	23,252	—	$	136,823	2,133	$	138,956
Amortization (c)	4,030	24,583	—	$	28,613	3,795	$	32,408
Capital expenditures	104,045	32,100	2,453	$	138,598	427	$	139,025
Total assets	1,417,278	979,871	369,931	$	2,767,080	67,444	$	2,834,524

(a) Cost of services and products sold is a significant expense category provided to the CODM at the segment-level.

(b) Other segment activities include amounts reflected in the captions, Research and development costs, Cost of services and products sold and Other (income) expenses, net, on the Company's Consolidated Statements of Operations.