RELATED PARTY TRANSACTIONS - Narrative (Details) - International Paper - Affiliated Entity $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($)
Offtake Agreement
Related Party Transaction [Line Items]
Related party transaction, expenses from related party	$ 149
Fiber Purchase Agreement
Related Party Transaction [Line Items]
Related party transaction, expenses from related party	49
Transition Services Agreement
Related Party Transaction [Line Items]
Other Expenses	8
Packaging
Related Party Transaction [Line Items]
Related party transaction, expenses from related party	$ 4

Amount of expense classified as other.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4,6)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.7)
-URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Name:	us-gaap_OtherExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration