Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]

Summary of revenues by primary geographical markets

A summary of the Company's revenues by primary geographical markets as well as by key product and service groups for the years ended December 31, 2024, 2023 and 2022 is as follows:

	Year Ended December 31, 2024
(In thousands)	Harsco Environmental Segment		Clean Earth Segment		Harsco Rail Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	292,274	$	939,845	$	173,424	$	1,405,543
Western Europe	425,775		—		84,398		510,173
Latin America (b)	154,684		—		5,578		160,262
Asia-Pacific	117,523		—		27,888		145,411
Middle East and Africa	103,957		—		—		103,957
Eastern Europe	17,299		—		—		17,299
Total Revenues	$	1,111,512	$	939,845	$	291,288	$	2,342,645
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing; and related logistical services	$	967,188	$	—	$	—	$	967,188
Ecoproducts	120,896		—		—		120,896
Environmental systems for aluminum dross and scrap processing	23,428		—		—		23,428
Railway track maintenance equipment	—		—		113,039		113,039
After market parts and services; safety and diagnostic technology	—		—		117,327		117,327
Railway contracting services	—		—		60,922		60,922
Hazardous waste processing solutions	—		778,402		—		778,402
Soil and dredged materials processing and reuse solutions	—		161,443		—		161,443
Total Revenues	$	1,111,512	$	939,845	$	291,288	$	2,342,645

	Year Ended December 31, 2023
(In thousands)	Harsco Environmental Segment		Clean Earth Segment		Harsco Rail Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	318,574	$	928,321	$	214,893	$	1,461,788
Western Europe	431,893		—		57,301		489,194
Latin America (b)	170,194		—		2,540		172,734
Asia-Pacific	113,800		—		22,061		135,861
Middle East and Africa	86,867		—		—		86,867
Eastern Europe	19,576		—		—		19,576
Total Revenues	$	1,140,904	$	928,321	$	296,795	$	2,366,020
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing; and related logistical services	$	950,961	$	—	$	—	$	950,961
Ecoproducts	162,291		—		—		162,291
Environmental systems for aluminum dross and scrap processing	27,652		—		—		27,652
Railway track maintenance equipment	—		—		128,155		128,155
After market parts and services; safety and diagnostic technology	—		—		121,039		121,039
Railway contracting services	—		—		47,601		47,601
Hazardous waste processing solutions	—		767,338		—		767,338
Soil and dredged materials processing and reuse solutions	—		160,983		—		160,983
Total Revenues	$	1,140,904	$	928,321	$	296,795	$	2,366,020

	Year Ended December 31, 2022
(In thousands)	Harsco Environmental Segment		Clean Earth Segment		Harsco Rail Segment		Consolidated Totals
Primary Geographical Markets (a):
North America	$	297,544	$	827,826	$	163,998	$	1,289,368
Western Europe	389,713		—		45,507		435,220
Latin America (b)	155,235		—		1,556		156,791
Asia-Pacific	119,433		—		33,855		153,288
Middle East and Africa	79,562		—		—		79,562
Eastern Europe	19,752		—		—		19,752
Total Revenues	$	1,061,239	$	827,826	$	244,916	$	2,133,981
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing; and related logistical services	$	900,426	$	—	$	—	$	900,426
Ecoproducts	145,911		—		—		145,911
Environmental systems for aluminum dross and scrap processing	14,902		—		—		14,902
Railway track maintenance equipment	—		—		100,032		100,032
After market parts and services; safety and diagnostic technology	—		—		118,829		118,829
Railway contracting services	—		—		26,055		26,055
Hazardous waste processing solutions	—		681,804		—		681,804
Soil and dredged materials processing and reuse solutions	—		146,022		—		146,022
Total Revenues	$	1,061,239	$	827,826	$	244,916	$	2,133,981

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

(b)    Includes Mexico.

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The table below represents the expected fulfillment year of Company's fixed, unsatisfied performance obligations, where the expected contract duration exceeds one year, by segment, and exclude any variable fees, fixed fees subject to indexation and any performance obligations expected to be satisfied within one year:

(In thousands)	Harsco Environmental Segment		Harsco Rail Segment
2025	$	17,019	$	51,037
2026	15,367		24,980
2027	12,803		17,955
2028	11,121		5,137
2029	3,132		4,038
Thereafter	3,132		2,676
Total remaining performance obligations	$	62,574	$	105,823