Acquisitions and Dispositions - Summary of Cash Flow Information (Details) - Discontinued Operations, Held-for-sale [Member] - Harsco Industrial - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Depreciation and Amortization, Discontinued Operations	$ 3,301	$ 7,729	$ 7,360
Capital Expenditure, Discontinued Operations	$ 8,372	$ 7,561	$ 6,895