SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Allowance for doubtful accounts
Valuation and Qualifying Account
Balance at beginning of year	$ 71	$ 64	$ 53
Charged (credited) to costs and expenses	61	69	61
Other	(64)	(62)	(50)
Balance at end of year	68	71	64
Deferred tax assets valuation allowance
Valuation and Qualifying Account
Balance at beginning of year	141	141	138
Charged (credited) to costs and expenses	16	(38)	(14)
Other	(27)	38	17
Balance at end of year	$ 130	$ 141	$ 141