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, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued businesses	$ 9,315	$ 5,163	$ 12,066	$ (30,732)
Selling, general and administrative expenses	594	1,862	1,071	3,511
Service revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	10,765	7,488	18,485	14,198
Cost of services and products sold	7,290	4,229	12,916	8,524
Product Revenues
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	78,083	64,364	135,415	109,477
Cost of services and products sold	$ 60,762	$ 52,548	$ 106,505	$ 125,094

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

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