PROPERTY, PLANT AND EQUIPMENT - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 732,621	$ 729,852
Less: Accumulated depreciation	(76,647)	(55,773)
Property, plant, and equipment, net	655,974	674,079
Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 82,026	$ 82,026
Building \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	10 years	10 years
Building \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	40 years	40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 373,849	$ 374,639
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	3 years	3 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	30 years	30 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 4,829	$ 4,829
Leasehold improvements \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	2 years	2 years
Leasehold improvements \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	5 years	5 years
Fixtures and furnishings
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 764	$ 800
Fixtures and furnishings \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	5 years	5 years
Fixtures and furnishings \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	7 years	7 years
Land improvements
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	15 years	15 years
Property, plant and equipment at cost	$ 150	$ 150
Land
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]	us-gaap:UsefulLifeTermOfLeaseMember	us-gaap:UsefulLifeTermOfLeaseMember
Property, plant and equipment at cost	$ 1,150	$ 1,150
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment at cost	$ 269,853	$ 266,258

PureCycle Technologies, Inc. 10-Q