Accounts Payable, Accrued Liabilities and Other Liabilities - Components of Other Long-Term Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Payables and Accruals [Abstract]
Employee benefit plan liabilities	$ 48	$ 51
Operating lease liabilities	84	83
Other accrued liabilities	99	100
Total	$ 231	$ 234