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	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued businesses	$ 5,163	$ 9,690	$ (30,732)	$ 14,845
Selling, general and administrative expenses	1,862	0	3,511	0
Service revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	7,488	7,081	14,198	17,190
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	4,589	3,527	9,264	8,180
Product Revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	64,396	94,065	109,392	165,546
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	$ 53,260	$ 75,396	$ 126,421	$ 134,458

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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