Goodwill and Intangible Assets - Schedule of Changes in Balances (Detail) $ in Millions	3 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill And Intangible Assets [Line Items]
Beginning balance	$ 129
Foreign currency impact	4
Ending balance	133
Reinforcement Materials [Member]
Goodwill And Intangible Assets [Line Items]
Beginning balance	46
Foreign currency impact	2
Ending balance	48
Performance Chemicals [Member]
Goodwill And Intangible Assets [Line Items]
Beginning balance	83
Foreign currency impact	2
Ending balance	$ 85