Accounts Receivable and Note Receivable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023	Jun. 30, 2023	Jan. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 296,291,000	$ 272,775,000
Accounts Receivable Greater than 12 Months Reserved	11,300,000
Accounts Receivable Securitization, Deferred Financing Cost		1,800,000
Receivable with Imputed Interest, Face Amount					$ 40,000,000
Note Receivable; Interest Rate; Stated percentage					2.50%
Receivables, Fair Value Disclosure					$ 34,300,000
Proceeds from Collection of Notes Receivable	11,200,000	8,600,000
Receivable with Imputed Interest, Net Amount	$ 14,000,000.0	23,900,000
Middle East | Harsco Environmental
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable Greater than 12 Months Reserved			$ 5,300,000
P N C Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable Securitization, Term	3 years
Accounts Receivable Securitization, Maximum Purchase Commitment				$ 150,000,000.0
Accounts Receivable from Securitization	$ 82,200,000	$ 69,700,000
Greater than 12 months
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 18,000,000
Harsco Industrial IKG | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Disposal Group, Including Discontinued Operation, Consideration					$ 85,000,000