Restructuring and Impairment Costs (Tables)

12 Months Ended

Sep. 30, 2025

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve

The following tables summarize the changes in Adient's restructuring reserve.

(in millions)	Employee Severance and Termination Benefits		Currency Translation and Other		Total
Balance at September 30, 2022	$	69	$	(9)	$	60
2023 Plan charges	39		—		39
Utilized - cash	(53)		—		(53)
Noncash adjustment - (under) overspend and other	1		4		5
Balance at September 30, 2023	$	56	$	(5)	$	51
2024 Plan charges	169		—		169
Utilized - cash	(43)		—		(43)
Noncash adjustment - (under) overspend and other	(1)		6		5
Balance at September 30, 2024	$	181	$	1	$	182
2025 Plan charges	58		—		58
Utilized - cash	(104)		—		(104)
Noncash adjustment - (under) overspend and other	(7)		5		(2)
Balance at September 30, 2025	$	128	$	6	$	134
Current restructuring reserve - other current liabilities					$	69
Noncurrent restructuring reserve - other noncurrent liabilities					65
Balance at September 30, 2025					$	134