Dispositions - Schedule of Income (Loss) from Discontinued Operations Harsco Rail (Details) - Discontinued Operations, Held-for-sale - Harsco Rail Segment - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued businesses	$ 2,751	$ (35,895)
Selling, general and administrative expenses	477	1,649
Service revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	7,720	6,710
Cost of services and products sold	5,626	4,295
Product Revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	57,332	45,113
Cost of services and products sold	$ 45,743	$ 72,546