Financial Information by Segment - Schedule of Income (Loss) from Continuing Operations before Income Taxes and Equity in Earnings of Affiliated Companies for Unallocated and Other (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Interest expense	$ (22)	$ (12)
Gain on sale of land	1
Loss on sale of business and asset impairment charge (Note D)	3	197
Unallocated and Other [Member]
Segment Reporting Information [Line Items]
Interest expense	(22)	(12)
Unallocated corporate costs	(15)	(14)
General unallocated income (expense)	4	1
Less: Equity in earnings of affiliated companies, net of tax	2	1
Income from continuing operations before income taxes and equity in earnings of affiliated companies	(39)	(230)
Certain Items [Member]
Segment Reporting Information [Line Items]
Gain on sale of land	1
Loss on sale of business and asset impairment charge (Note D)	(3)	(197)
Legal and environmental matters and reserves	(1)	(1)
Acquisition and integration-related charges	(1)	(1)
Divestiture related charges		(4)
Global restructuring activities		(2)
Other		1
Total certain items, pre-tax	$ (4)	$ (204)