OPERATING CASH FLOWS AND OTHER SUPPLEMENTAL FINANCIAL INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
NET INCOME (LOSS)	$ 4	$ 234	$ 3	$ 13	$ 43	$ (39)	$ (4)	$ (20)	$ 254	$ (20)	$ 63
Less: loss from discontinued operations, net of tax									(30)	(7)	(17)
Income (loss) from continuing operations									284	(13)	80
Adjustments to income (loss) from continuing operations to arrive at cash provided by (used for) operating activities:
Depreciation and amortization									67	67	63
Deferred income tax expense (benefit)									(2)	(4)	13
Restructuring costs									10	23	39
Repurchase of convertible notes									31	24	0
Equity in earnings of affiliates									(38)	(42)	(52)
Stock compensation expense									8	5	6
Provision for doubtful accounts									0	3	2
Pension and retiree medical expense									25	151	53
Gain on sale of investment									0	(125)	0
Gain on sale of property									0	0	(16)
Dividends received from equity method investments									36	30	47
Pension and retiree medical contributions									(177)	(153)	(140)
Restructuring payments									(10)	(23)	(22)
Changes in off-balance sheet receivable securitization and factoring programs									(46)	43	(24)
Changes in assets and liabilities, excluding effects of acquisitions, divestitures, foreign currency adjustments and discontinued operations:
Receivables									34	(87)	150
Inventories									(9)	18	11
Accounts payable									(5)	(31)	(118)
Other current assets and liabilities									19	37	(20)
Other assets and liabilities									0	(1)	24
Operating cash flows provided by (used by) continuing operations									227	(78)	96
Operating cash flows used for discontinued operations									(12)	(18)	(19)
CASH PROVIDED BY (USED FOR) OPERATING ACTIVITIES									215	(96)	77
ZF Meritor LLC [Member]
Adjustments to income (loss) from continuing operations to arrive at cash provided by (used for) operating activities:
Equity in earnings of affiliates									(190)	0	0
Dividends received from equity method investments									190	0	0
Other equity method investments [Member]
Adjustments to income (loss) from continuing operations to arrive at cash provided by (used for) operating activities:
Equity in earnings of affiliates									(38)	(42)	(52)
Dividends received from equity method investments									$ 36	$ 30	$ 47