Income Tax (Tables)

6 Months Ended

Mar. 31, 2023

Income Tax Disclosure [Abstract]

Effective Tax Rate

Effective Tax Rate

	Three Months Ended March 31						Six Months Ended March 31
	2023			2022			2023			2022
	(Dollars in millions)
(Provision) benefit for income taxes	$	(29	)	$	(36	)	$	(49	)	$	(24	)
Effective tax rate		26	%		24	%		25	%		44	%