Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill are as follows:

(in millions)	Americas		EMEA		Asia		Total
Balance at September 30, 2023	$	609	$	317	$	1,168	$	2,094
Business acquisitions	—		—		(5)		(5)
Currency translation and other	(3)		24		54		75
Balance at September 30, 2024	$	606	$	341	$	1,217	$	2,164
Impairments	—		(333)		—		(333)
Currency translation and other	1		(8)		(17)		(24)
Balance at September 30, 2025	$	607	$	—	$	1,200	$	1,807

Schedule of Other Intangible Assets

Adient's other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of:

	September 30, 2025						September 30, 2024
(in millions)	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Intangible assets
Patented technology	$	81	$	(45)	$	36	$	81	$	(39)	$	42
Customer relationships	537		(265)		272		563		(246)		317
Trademarks and other	15		(4)		11		25		(13)		12
Total intangible assets	$	633	$	(314)	$	319	$	669	$	(298)	$	371