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Revenue Recognition
 6 Months Ended
Jun. 30, 2023
Revenue from Contract with Customer [Abstract]  
Revenue Recognition RevenuesThe Company recognizes revenues to depict the transfer of promised services and products to customers in an amount that reflects the consideration the Company expects to receive in exchange for those services and products. Revenues from continuing operations include service revenues from HE and CE and product revenues from HE. Revenue from the Rail business is included in Income (loss) from discontinued businesses.
A summary of the Company's revenues by primary geographical markets as well as by key product and service groups is as follows:
Three Months Ended
June 30, 2023
(In thousands)Harsco Environmental Segment
Clean Earth
Segment		Consolidated Totals
Primary Geographical Markets (a):
North America$81,616 $230,575 $312,191 
Western Europe107,318 — 107,318 
Latin America (b)
42,180 — 42,180 
Asia-Pacific32,339 — 32,339 
Middle East and Africa21,117 — 21,117 
Eastern Europe 5,023 — 5,023 
Total Revenues$289,593 $230,575 $520,168 
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services$242,638 $— $242,638 
Ecoproducts40,504 — 40,504 
Environmental systems for aluminum dross and scrap processing6,451 — 6,451 
Hazardous waste processing solutions— 197,506 197,506 
Soil and dredged materials processing and reuse solutions— 33,069 33,069 
Total Revenues$289,593 $230,575 $520,168 

Three Months Ended
June 30, 2022
(In thousands)Harsco Environmental SegmentClean Earth
Segment		Consolidated Totals
Primary Geographical Markets (a):
North America$80,709 $203,453 $284,162 
Western Europe99,591 — 99,591 
Latin America (b)
39,202 — 39,202 
Asia-Pacific31,950 — 31,950 
Middle East and Africa20,762 — 20,762 
Eastern Europe 5,385 — 5,385 
Total Revenues $277,599 $203,453 $481,052 
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services$236,165 $— $236,165 
Ecoproducts38,083 — 38,083 
Environmental systems for aluminum dross and scrap processing3,351 — 3,351 
Hazardous waste processing solutions— 170,817 170,817 
Soil and dredged materials processing and reuse solutions— 32,636 32,636 
Total Revenues$277,599 $203,453 $481,052 
Six Months Ended
June 30, 2023
(In thousands)Harsco Environmental SegmentClean Earth
Segment		Consolidated Totals
Primary Geographical Markets (a):
North America$160,089 $453,039 $613,128 
Western Europe208,704 — 208,704 
Latin America (b)
83,135 — 83,135 
Asia-Pacific61,300 — 61,300 
Middle East and Africa39,522 — 39,522 
Eastern Europe 10,032 — 10,032 
Total Revenues $562,782 $453,039 $1,015,821 
Six Months Ended
June 30, 2023
(In thousands)Harsco Environmental SegmentClean Earth
Segment		Consolidated Totals
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services$471,999 $— $471,999 
Ecoproducts78,906 — 78,906 
Environmental systems for aluminum dross and scrap processing11,877 — 11,877 
Hazardous waste processing solutions— 383,618 383,618 
Soil and dredged materials processing and reuse solutions— 69,421 69,421 
Total Revenues$562,782 $453,039 $1,015,821 
Six Months Ended
June 30, 2022
(In thousands)Harsco Environmental Segment
Clean Earth
Segment		Consolidated Totals
Primary Geographical Markets (a):
North America$151,788 $394,199 $545,987 
Western Europe201,670 — 201,670 
Latin America (b)
75,007 — 75,007 
Asia-Pacific60,018 — 60,018 
Middle East and Africa40,648 — 40,648 
Eastern Europe 10,519 — 10,519 
Total Revenues$539,650 $394,199 $933,849 
Key Product and Service Groups:
Environmental services related to resource recovery for metals manufacturing and related logistical services$463,854 $— $463,854 
Ecoproducts70,048 — 70,048 
Environmental systems for aluminum dross and scrap processing5,748 — 5,748 
Hazardous waste processing solutions— 329,824 329,824 
Soil and dredged materials processing and reuse solutions— 64,375 64,375 
Total Revenues$539,650 $394,199 $933,849 
(a)     Revenues are attributed to individual countries based on the location of the facility generating the revenue.
(b)     Includes Mexico.

The Company may receive payments in advance of earning revenue (advances on contracts), which are included in Other current liabilities and Other liabilities on the Condensed Consolidated Balance Sheets. The Company may recognize revenue in advance of being able to contractually invoice the customer (contract assets), which is included in Other current assets and Other assets on the Condensed Consolidated Balance Sheets. Contract assets are transferred to Trade accounts receivable, net, when the right to payment becomes unconditional. Contract assets and advances on contracts are reported as a net position, on a contract-by-contract basis, at the end of each reporting period.

The Company had contract assets totaling $5.3 million at both June 30, 2023 and December 31, 2022. The Company had advances on contracts totaling $5.2 million and $6.8 million at June 30, 2023 and December 31, 2022, respectively. During the three and six months ended June 30, 2023, the Company recognized $2.2 million and $5.5 million, respectively, of revenue related to amounts previously included in advances on contracts. During the three and six months ended June 30, 2022, the Company recognized $7.7 million and $10.5 million, respectively, of revenue related to amounts previously included in advances on contracts.
At June 30, 2023, HE had remaining, fixed, unsatisfied performance obligations where the expected contract duration exceeds one year totaling $66.6 million. Of this amount, $20.8 million is expected to be fulfilled by June 30, 2024, $20.6 million by June 30, 2025, $12.4 million by June 30, 2026, $6.2 million by June 30, 2027 and the remainder thereafter. These amounts exclude any variable fees, fixed fees subject to indexation and any performance obligations expected to be satisfied within one year.