Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2020

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, 2020		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	$	10	$	—	$	10	$	—
Other noncurrent assets
Foreign currency exchange derivatives	1		—		1		—
Cross-currency interest rate swaps	2		—		2		—
Total assets	$	13	$	—	$	13	$	—
Other current liabilities
Foreign currency exchange derivatives	$	66	$	—	$	66	$	—
Other non current liabilities
Foreign currency exchange derivatives	15		—		15		—
Total liabilities	$	81	$	—	$	81	$	—

	Fair Value Measurements Using:
(in millions)	Total as of September 30, 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	$	8	$	—	$	8	$	—
Cross-currency interest rate swaps	12		—		12		—
Other noncurrent assets
Foreign currency exchange derivatives	1		—		1		—
Cross-currency interest rate swaps	1		—		1		—
Interest rate cap	1		—		1		—
Total assets	$	23	$	—	$	23	$	—
Other current liabilities
Foreign currency exchange derivatives	$	12	$	—	$	12	$	—
Other noncurrent liabilities
Foreign currency exchange derivatives	3		—		3		—
Total liabilities	$	15	$	—	$	15	$	—