EQUITY METHOD INVESTMENTS Narrative (Details) $ in Millions	3 Months Ended
	Dec. 31, 2023 USD ($)
Ilim Holding
Schedule of Equity Method Investments [Line Items]
Reclassification from accumulated other comprehensive income, current period, before tax	$ 517
Proceeds from Divestiture of Businesses and Interests in Affiliates	484
Divestiture, Transaction Costs	36
Ilim JSC Group
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates	$ 24
Reportable Subsegments | Ilim Holding
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest	50.00%
Reportable Subsegments | Ilim JSC Group
Schedule of Equity Method Investments [Line Items]
Percentage of equity interest	2.39%