Cash Flow, Operating And Financing Activities, Lessee [Abstract]

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- Definition

Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract]

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- Definition

Amount of interest paid on finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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-Publisher FASB
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-SubTopic 20
-Section 45
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-Subparagraph (b)
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($)			9 Months Ended
	Jun. 28, 2019	Jan. 01, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Cash flows from operating activities - Operating leases			$ 20,512,000	$ 10,881,000
Finance Lease, Interest Payment on Liability			997,000	953,000
ROU assets obtained in exchange for lease obligations:
Operating leases	$ 21,000,000		62,507,000	57,607,000
Finance leases			$ 1,613,000	$ 1,671,000
Harsco Clean Earth Segment
ROU assets obtained in exchange for lease obligations:
Operating leases		$ 34,000,000