Financial Information by Segment - Schedule of Performance Segment (Detail) - Performance Chemicals [Member] - Operating Segments [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 372	$ 303	$ 1,034	$ 864
Performance Additives [Member]
Segment Reporting Information [Line Items]
Net sales	270	208	763	595
Formulated Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	$ 102	$ 95	$ 271	$ 269