Subsequent Events (Details) - Subsequent Event [Member] $ in Millions	3 Months Ended
	Dec. 31, 2023 USD ($)
Severance and other shutdown charges [Member] | Global Cellulose Fibers [Member]
Restructuring Cost and Reserve [Line Items]
Business Exit Costs	$ 14
Severance and other shutdown charges [Member] | Industrial Packaging
Restructuring Cost and Reserve [Line Items]
Business Exit Costs	55
Noncash asset write-off and accelerated depreciation [Member] | Global Cellulose Fibers [Member]
Restructuring Cost and Reserve [Line Items]
Business Exit Costs	200
Noncash asset write-off and accelerated depreciation [Member] | Industrial Packaging
Restructuring Cost and Reserve [Line Items]
Business Exit Costs	$ 395