Equity and Noncontrolling Interests (Tables)

3 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of Stockholders Equity

(in millions)	Ordinary Shares		Additional Paid-in Capital		Retained Earnings (Accumulated Deficit)			Accumulated Other Comprehensive Income (Loss)			Shareholders' Equity Attributable  to Adient			Shareholders' Equity Attributable to Noncontrolling Interests			Total Equity
Balance at September 30, 2018	$	—	$	3,951	$	(1,028	)	$	(531	)	$	2,392		$	325		$	2,717
Net income (loss)	—		—		(17		)	—			(17		)	18			1
Foreign currency translation adjustments	—		—		—			16			16			1			17
Realized and unrealized gains (losses) on derivatives	—		—		—			(3		)	(3		)	—			(3		)
Dividends declared ($0.275 per share)	—		—		(26		)	—			(26		)	—			(26		)
Dividends attributable to noncontrolling interests	—		—		—			—			—			(14		)	(14		)
Formation of consolidated joint venture	—		—		—			—			—			28			28
Share based compensation	—		3		1			—			4			—			4
Balance at December 31, 2018	$	—	$	3,954	$	(1,070	)	$	(518	)	$	2,366		$	358		$	2,724

(in millions)	Ordinary Shares		Additional Paid-in Capital		Retained Earnings (Accumulated Deficit)			Accumulated Other Comprehensive Income (Loss)			Shareholders' Equity Attributable  to Adient			Shareholders' Equity Attributable to Noncontrolling Interests			Total Equity
Balance at September 30, 2017	$	—	$	3,942	$	734		$	(397	)	$	4,279		$	313		$	4,592
Net income (loss)	—		—		(216		)	—			(216		)	13			(203		)
Foreign currency translation adjustments	—		—		—			71			71			4			75
Realized and unrealized gains (losses) on derivatives	—		—		—			(10		)	(10		)	—			(10		)
Dividends declared ($0.275 per share)	—		—		(26		)	—			(26		)	—			(26		)
Dividends attributable to noncontrolling interests	—		—		—			—			—			(9		)	(9		)
Share based compensation	—		6		—			—			6			—			6
Other	—		4		—			—			4			—			4
Balance at December 31, 2017	$	—	$	3,952	$	492		$	(336	)	$	4,108		$	321		$	4,429

Schedule of AOCI

The following table presents changes in AOCI attributable to Adient:

	Three Months Ended December 31,
(in millions)	2018			2017
Foreign currency translation adjustments
Balance at beginning of period	$	(523	)	$	(398	)
Aggregate adjustment for the period, net of tax	16			71
Balance at end of period	(507		)	(327		)
Realized and unrealized gains (losses) on derivatives
Balance at beginning of period	(7		)	3
Current period changes in fair value, net of tax	(3		)	(9		)
Reclassification to income, net of tax	—			(1		)
Balance at end of period	(10		)	(7		)
Pension and postretirement plans
Balance at beginning of period	(1		)	(2		)
Balance at end of period	(1		)	(2		)
Accumulated other comprehensive income (loss), end of period	$	(518	)	$	(336	)

Schedule of Changes in Redeemable Noncontrolling Interest

The following table presents changes in the redeemable noncontrolling interests:

	Three Months Ended December 31,
(in millions)	2018			2017
Beginning balance	$	47		$	28
Net income	9			7
Foreign currency translation adjustments	(1		)	1
Dividends	(28		)	(8		)
Change in noncontrolling interest share	—			1
Ending balance	$	27		$	29