Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of the Fair Value Hierarchy for Assets and Liabilities

The following tables present Adient's fair value hierarchy for those assets and liabilities measured at fair value:

	Fair Value Measurements Using:
(in millions)	Total as of March 31, 2019		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other current assets
Foreign currency exchange derivatives	$	9	$	—	$	9	$	—
Cross-currency interest rate swaps	20		—		20		—
Other noncurrent assets
Foreign currency exchange derivatives	—		—		—		—
Total assets	$	29	$	—	$	29	$	—
Other current liabilities
Foreign currency exchange derivatives	$	14	$	—	$	14	$	—
Other noncurrent liabilities
Foreign currency exchange derivatives	1		—		1		—
Total liabilities	$	15	$	—	$	15	$	—

	Fair Value Measurements Using:
(in millions)	Total as of September 30, 2018		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Other current assets
Foreign currency exchange derivatives	$	8	$	—	$	8	$	—
Other noncurrent assets
Foreign currency exchange derivatives	2		—		2		—
Cross-currency interest rate swaps	13		—		13		—
Total assets	$	23	$	—	$	23	$	—
Other current liabilities
Foreign currency exchange derivatives	$	11	$	—	$	11	$	—
Other noncurrent liabilities
Foreign currency exchange derivatives	2		—		2		—
Equity swaps	2		—		2		—
Total liabilities	$	15	$	—	$	15	$	—