Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net income attributable to Johnson Controls, Inc.	$ 148	$ 379	$ 502	$ 803
Income attributable to noncontrolling interests	30	38	60	73
Net income	178	417	562	876
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	234	200	457	396
Pension and postretirement benefit cost (credit)	3	6	(13)	13
Pension and postretirement contributions	(29)	(22)	(45)	(364)
Equity in earnings of partially-owned affiliates, net of dividends received	(51)	(59)	(99)	(161)
Deferred income taxes	129	(26)	121	43
Impairment charges	13	14	13	14
Gain on divestitures - net	0	(35)	0	(35)
Fair value adjustment of equity investment	(82)	(12)	(82)	(12)
Other	14	18	27	36
Changes in assets and liabilities, excluding acquisitions and divestitures:
Receivables	(295)	(277)	(54)	(71)
Inventories	(64)	(74)	(84)	(69)
Other assets	(70)	(9)	(292)	(195)
Accouns payable and accrued liabilities	282	181	81	(134)
Accrued income taxes	(45)	(79)	(77)	(191)
Cash provided by operating activities	217	243	515	146
Investing Activities
Capital expenditures	(293)	(448)	(664)	(986)
Sale of property, plant and equipment	29	3	46	6
Acquisition of businesses, net of cash acquired	(113)	(19)	(113)	(30)
Business divestitures	0	91	0	91
Settlement of cross-currency interest rate swaps	47	(9)	53	(19)
Changes in long-term investments	0	2	(17)	(98)
Warrant redemption	0	0	0	25
Cash used by investing activities	(330)	(380)	(695)	(1,011)
Financing Activities
Increase (decrease) in short-term debt - net	245	186	637	(98)
Increase in long-term debt	1	136	91	1,235
Repayment of long-term debt	(5)	(9)	(114)	(16)
Stock repurchases	(50)	(33)	(50)	(33)
Payment of cash dividends	0	(123)	(253)	(232)
Proceeds from the exercise of stock options	51	16	85	21
Other	27	(17)	28	(40)
Cash provided by financing activities	269	156	424	837
Effect of exchange rate changes on cash and cash equivalents	11	(20)	(28)	11
Increase (decrease) in cash and cash equivalents	167	(1)	216	(17)
Cash and cash equivalents at beginning of period	314	241	265	257
Cash and cash equivalents at end of period	$ 481	$ 240	$ 481	$ 240