Information by Segment and Geographic Area (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

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

Countries with revenues from unaffiliated customers or net property, plant and equipment of ten percent or more of the consolidated totals (in at least one period presented) are as follows:

Information by Geographic Area (a)

	Revenues from Unaffiliated Customers
	Twelve Months Ended December 31
(In thousands)	2021		2020		2019
U.S.	$	1,008,689	$	830,699	$	420,956
U.K.	117,529		116,425		126,660
All Other	722,181		586,909		656,753
Totals including Corporate	$	1,848,399	$	1,534,033	$	1,204,369

(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)	2021		2020
U.S.	$	267,174	$	253,994
China	108,496		109,617
All Other	278,243		266,743
Totals including Corporate	$	653,913	$	630,354

Schedule of Segment Operating Information by Segment

Operating Information by Segment:

	Twelve Months Ended
	December 31
(In thousands)	2021		2020		2019
Revenues (b)
Harsco Environmental	$	1,068,083	$	914,445	$	1,034,847
Harsco Clean Earth	780,316		619,588		169,522
Total Revenues	$	1,848,399	$	1,534,033	$	1,204,369
Operating Income (Loss) (b)
Harsco Environmental	$	103,402	$	59,006	$	112,298
Harsco Clean Earth	25,639		16,096		20,009
Corporate	(40,665)		(78,408)		(55,904)
Total Operating Income (Loss)	$	88,376	$	(3,306)	$	76,403
Total Assets
Harsco Environmental	$	1,386,087	$	1,322,731	$	1,296,061
Harsco Clean Earth	1,278,472		1,279,387		745,410
Corporate	56,086		74,185		28,455
Discontinued Operations	333,263		316,984		297,541
Total Assets	$	3,053,908	$	2,993,287	$	2,367,467
Depreciation (b)
Harsco Environmental	$	105,830	$	100,971	$	104,840
Harsco Clean Earth	19,672		17,450		4,932
Corporate	1,900		2,022		2,737
Total Depreciation	$	127,402	$	120,443	$	112,509
Amortization (b)
Harsco Environmental	$	8,052	$	7,825	$	7,286
Harsco Clean Earth	24,180		22,814		7,923
Corporate (c)	2,710		2,961		2,500
Total Amortization	$	34,942	$	33,600	$	17,709
Capital Expenditures (b)
Harsco Environmental	$	137,228	$	99,056	$	153,694
Harsco Clean Earth	18,403		12,612		5,870
Corporate	1,289		488		1,762
Total Capital Expenditures	$	156,920	$	112,156	$	161,326

(b) The Company's acquisition of ESOL closed on April 6, 2020 and the Company's acquisition of Clean Earth closed on June 28, 2019. The operating results of the former Harsco Rail Segment and former Harsco Industrial Segment have been reflected as discontinued operations in the Consolidated Statement of Operations for all periods presented. See Note 3, Acquisitions and Dispositions, for additional details.

(c) Amortization expense on Corporate relates to the amortization of deferred financing costs.

Reconciliation of Operating Profit (Loss) from Segments to Consolidated

Reconciliation of Segment Operating Income to Consolidated Income (Loss) From Continuing Operations Before Income Taxes and Equity Income:

	Twelve Months Ended
	December 31
(In thousands)	2021		2020		2019
Segment operating income	$	129,041	$	75,102	$	132,307
General Corporate expense	(40,665)		(78,408)		(55,904)
Operating income from continuing operations	88,376		(3,306)		76,403
Interest income	2,231		2,129		1,946
Interest expense	(63,235)		(58,196)		(34,024)
Defined benefit pension income (expense)	15,640		7,073		(5,556)
Unused debt commitment fees, amendment fees and loss on extinguishment of debt	(5,506)		(1,920)		(7,704)
Income (loss) from continuing operations before income taxes and equity income	$	37,506	$	(54,220)	$	31,065