Supplemental Financial Information - Other Income (Expense), Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ (35)	$ 57	$ 13
Foreign Currency Transaction Gain (Loss), Realized	(28)	(13)	(17)
Losses on debt extinguishment	(24)	(178)	(8)
Other	1	(6)	5
Other Nonoperating Income (Expense)	(117)	(99)	23
United States
Pension Settlement Expense	73
Other Nonoperating Income (Expense)
Deferred Compensation Investment Income (Expense)	(46)	43	24
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(17)	(1)	7
Embecta services agreement income, net	$ 33	$ 0	$ 0