CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues from continuing operations:
Total revenues	$ 609,993	$ 609,016	$ 1,210,310	$ 1,169,721
Costs and expenses from continuing operations:
Selling, general and administrative expenses	90,454	86,801	177,580	168,662
Research and development expenses	943	1,019	1,804	1,539
Impairment of Long-Lived Assets to be Disposed of	0	14,099	0	14,099
Remeasurement of long-lived assets	0	0	10,695	0
Other expense (income), net	7,123	(1,269)	4,683	(6,917)
Total costs and expenses	578,738	575,329	1,153,242	1,104,119
Operating income (loss) from continuing operations	31,255	33,687	57,068	65,602
Interest income	3,435	1,594	5,132	3,074
Interest expense	(27,934)	(26,409)	(56,056)	(51,404)
Facility fees and debt-related income (expense)	(2,920)	(2,730)	(5,709)	(5,093)
Defined benefit pension income (expense)	(4,166)	(5,400)	(8,342)	(10,729)
Income (loss) from continuing operations before income taxes and equity income	(330)	742	(7,907)	1,450
Income tax benefit (expense) from continuing operations	(10,020)	(15,331)	(17,935)	(23,348)
Equity income (loss) of unconsolidated entities, net	127	(309)	(122)	(442)
Income (loss) from continuing operations	(10,223)	(14,898)	(25,964)	(22,340)
Discontinued operations:
Income (loss) from discontinued businesses	(1,211)	(1,165)	(2,703)	(2,820)
Income tax benefit (expense) from discontinued businesses	314	225	701	732
Income (loss) from discontinued operations, net of tax	(897)	(940)	(2,002)	(2,088)
Net income (loss)	(11,120)	(15,838)	(27,966)	(24,428)
Less: Net loss (income) attributable to noncontrolling interests	(2,481)	4,399	(3,597)	3,464
Net income (loss) attributable to Enviri Corporation	(13,601)	(11,439)	(31,563)	(20,964)
Amounts attributable to Enviri Corporation common stockholders:
Income (loss) from continuing operations, net of tax	(12,704)	(10,499)	(29,561)	(18,876)
Income (loss) from discontinued operations, net of tax	(897)	(940)	(2,002)	(2,088)
Net income (loss) attributable to Enviri Corporation	$ (13,601)	$ (11,439)	$ (31,563)	$ (20,964)
Weighted-average shares of common stock outstanding (in shares)	80,146	79,816	80,045	79,725
Basic earnings (loss) per common share attributable to Enviri Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.16)	$ (0.13)	$ (0.37)	$ (0.24)
Discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.03)	(0.03)
Basic earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (0.17)	$ (0.14)	$ (0.39)	$ (0.26)
Diluted weighted-average shares of common stock outstanding (in shares)	80,146	79,816	80,045	79,725
Diluted earnings (loss) per common share attributable to Enviri Corporation common stockholders:
Continuing operations (in dollars per share)	$ (0.16)	$ (0.13)	$ (0.37)	$ (0.24)
Discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.03)	(0.03)
Diluted earnings (loss) per share attributable to Harsco Corporation common stockholders (in dollars per share)	$ (0.17)	$ (0.14)	$ (0.39)	$ (0.26)
Product Revenues
Revenues from continuing operations:
Total revenues	$ 104,710	$ 127,053	$ 205,873	$ 226,198
Costs and expenses from continuing operations:
Cost of services and products sold	91,996	101,148	177,406	183,697
Service Revenues
Revenues from continuing operations:
Total revenues	505,283	481,963	1,004,437	943,523
Costs and expenses from continuing operations:
Cost of services and products sold	$ 388,222	$ 373,531	$ 781,074	$ 743,039