Johnson Controls 10-Q 3 Feb 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Dec. 31, 2013
Document and Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	31-Dec-13
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q1
Trading Symbol	'JCI
Entity Registrant Name	'JOHNSON CONTROLS INC
Entity Central Index Key	'0000053669
Current Fiscal Year End Date	'--09-30
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	664,028,370

Consolidated_Statements_of_Fin

Consolidated Statements of Financial Position (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'	'
Cash and cash equivalents	$245	$1,055	$314
Accounts receivable - net	6,743	7,206	7,090
Inventories	2,452	2,325	2,384
Assets held for sale	777	804	0
Other current assets	2,509	2,308	3,115
Current assets	12,726	13,698	12,903
Property, plant and equipment - net	6,665	6,585	6,553
Goodwill	6,717	6,589	7,016
Other intangible assets-net	1,070	999	1,031
Investments in partially-owned affiliates	1,043	1,024	1,015
Other noncurrent assets	2,611	2,623	2,789
Total assets	30,832	31,518	31,307
Liabilities and Equity	'	'	'
Short-term debt	986	119	715
Current portion of long-term debt	818	819	320
Accounts payable	5,592	6,318	5,880
Accrued compensation and benefits	1,017	1,215	931
Liabilities held for sale	321	402	0
Other current liabilities	3,069	3,244	2,922
Current liabilities	11,803	12,117	10,768
Long-term debt	4,866	4,560	5,413
Pension and postretirement benefits	736	750	1,235
Other noncurrent liabilities	1,466	1,360	1,533
Long-term liabilities	7,068	6,670	8,181
Commitments and contingencies (Note 18)	'	'	'
Redeemable noncontrolling interests	169	157	270
Common stock, $1.00 par value	703	700	684
Capital in excess of par value	2,431	2,399	2,092
Retained earnings	9,649	9,328	8,842
Treasury stock, at cost	-1,652	-531	-180
Accumulated other comprehensive income	400	418	495
Shareholders' equity attributable to Johnson Controls, Inc.	11,531	12,314	11,933
Noncontrolling interests	261	260	155
Total equity	11,792	12,574	12,088
Total liabilities and equity	$30,832	$31,518	$31,307

Consolidated_Statements_of_Fin1

Consolidated Statements of Financial Position (Parenthetical) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'	'
Common stock, par value	$1	$1	$1

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Net sales	'		'
Products and systems	$8,939	[1]	$8,357	[1]
Services	1,969	[1]	2,065	[1]
Net sales	10,908		10,422
Cost of sales	'		'
Products and systems	7,630	[1]	7,207	[1]
Services	1,621	[1]	1,699	[1]
Cost of sales	9,251		8,906
Gross profit	1,657		1,516
Selling, general and administrative expenses	-1,084		-1,052
Net financing charges	-55		-61
Equity income	113		85
Income before income taxes	631		488
Provision for income taxes	126		99
Net income	505		389
Income attributable to noncontrolling interests	36		30
Net income attributable to Johnson Controls, Inc.	$469		$359
Earnings per share	'		'
Basic	$0.70		$0.53
Diluted	$0.69		$0.52
[1]	*Products and systems consist of Automotive Experience and Power Solutions products and systems and Building Efficiency installed systems. Services are Building Efficiency technical and Global Workplace Solutions.

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]	'	'
Net income	$505	$389
Other comprehensive income (loss), net of tax:	'	'
Foreign currency translation adjustments	-14	43
Realized and unrealized losses on derivatives	-1	-1
Realized and unrealized gains (losses) on marketable common stock	-2	3
Pension and postretirement plans	-1	-9
Other comprehensive income (loss)	-18	36
Total comprehensive income	487	425
Comprehensive income attributable to noncontrolling interests	36	29
Comprehensive income attributable to Johnson Controls, Inc.	$451	$396

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Operating Activities	'	'
Net income attributable to Johnson Controls, Inc.	$469	$359
Income attributable to noncontrolling interests	36	30
Net income	505	389
Adjustments to reconcile net income to cash provided (used) by operating activities:	'	'
Depreciation and amortization	244	223
Pension and postretirement benefit expense (income)	9	-16
Pension and postretirement contributions	-25	-16
Equity in earnings of partially-owned affiliates, net of dividends received	-74	-48
Deferred income taxes	14	-5
Fair value adjustment of equity investment	-19	0
Equity-based compensation	18	16
Other	-8	-3
Changes in assets and liabilities, excluding acquisitions and divestitures:	'	'
Receivables	531	241
Inventories	-95	-28
Other assets	-41	-222
Restructuring reserves	-62	-34
Accounts payable and accrued liabilities	-932	-167
Accrued income taxes	-346	-32
Cash provided (used) by operating activities	-281	298
Investing Activities	'	'
Capital expenditures	-345	-371
Sale of property, plant and equipment	21	17
Acquisition of businesses, net of cash acquired	-128	0
Business divestitures	13	0
Changes in long-term investments	3	-17
Other	5	6
Cash used by investing activities	-431	-365
Financing Activities	'	'
Increase in short-term debt - net	867	392
Increase in long-term debt	302	90
Repayment of long-term debt	-6	-109
Stock repurchases	-1,199	0
Payment of cash dividends	-130	-253
Proceeds from the exercise of stock options	84	34
Other	4	1
Cash provided (used) by financing activities	-78	155
Effect of exchange rate changes on cash and cash equivalents	-19	-39
Change in cash held for sale	-1	0
Increase (decrease) in cash and cash equivalents	-810	49
Cash and cash equivalents at beginning of period	1,055	265
Cash and cash equivalents at end of period	$245	$314

Financial_Statements

Financial Statements	3 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Financial Statements	'
	Financial Statements
	In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for the periods presented. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) have been omitted pursuant to the rules and regulations of the United States Securities and Exchange Commission (SEC). These consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in the Johnson Controls, Inc. (the “Company”) Annual Report on Form 10-K for the year ended September 30, 2013. The results of operations for the three month period ended December 31, 2013 are not necessarily indicative of results for the Company’s 2014 fiscal year because of seasonal and other factors.
	The consolidated financial statements include the accounts of Johnson Controls, Inc. and its domestic and non-U.S. subsidiaries that are consolidated in conformity with U.S. GAAP. All significant intercompany transactions have been eliminated. Investments in partially-owned affiliates are accounted for by the equity method when the Company’s interest exceeds 20% and the Company does not have a controlling interest.
	Under certain criteria as provided for in Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 810, “Consolidation,” the Company may consolidate a partially-owned affiliate. To determine whether to consolidate a partially-owned affiliate, the Company first determines if the entity is a variable interest entity (VIE). An entity is considered to be a VIE if it has one of the following characteristics: 1) the entity is thinly capitalized; 2) residual equity holders do not control the entity; 3) equity holders are shielded from economic losses or do not participate fully in the entity’s residual economics; or 4) the entity was established with non-substantive voting. If the entity meets one of these characteristics, the Company then determines if it is the primary beneficiary of the VIE. The party with the power to direct activities of the VIE that most significantly impact the VIE’s economic performance and the potential to absorb benefits or losses that could be significant to the VIE is considered the primary beneficiary and consolidates the VIE. If the entity is not considered a VIE, then the Company applies the voting interest model to determine whether or not the Company shall consolidate the partially-owned affiliate.
	Consolidated VIEs
	Based upon the criteria set forth in ASC 810, the Company has determined that it was the primary beneficiary in three VIEs for the reporting periods ended December 31, 2013, September 30, 2013 and December 31, 2012, as the Company absorbs significant economics of the entities and has the power to direct the activities that are considered most significant to the entities.
	Two of the VIEs manufacture products in North America for the automotive industry. The Company funds the entities’ short term liquidity needs through revolving credit facilities and has the power to direct the activities that are considered most significant to the entities through its key customer supply relationships.
	During the three month period ended December 31, 2011, a pre-existing VIE accounted for under the equity method was reorganized into three separate investments as a result of the counterparty exercising its option to put its interest to the Company. The Company acquired additional interests in two of the reorganized group entities. The reorganized group entities are considered to be VIEs as the other owner party has been provided decision making rights but does not have equity at risk. The Company is considered the primary beneficiary of one of the entities due to the Company’s power pertaining to decisions over significant activities of the entity. As such, this VIE has been consolidated within the Company’s consolidated statements of financial position. The impact of consolidation of the entity on the Company’s consolidated statements of income for the three month periods ended December 31, 2013 and 2012 was not material. The VIE is named as a co-obligor under a third party debt agreement of $175 million, maturing in fiscal 2020, under which it could become subject to paying more than its allocated share of the third party debt in the event of bankruptcy of one or more of the other co-obligors. The other co-obligors, all related parties in which the Company is an equity investor, consist of the remaining group entities involved in the reorganization. As part of the overall reorganization transaction, the Company has also provided financial support to the group entities in the form of loans totaling $55 million, which are subordinate to the third party debt agreement. The Company is a significant customer of certain co-obligors, resulting in a remote possibility of loss. Additionally, the Company is subject to a floor guaranty expiring in fiscal 2022; in the event that the other owner party no longer owns any part of the group entities due to sale or transfer, the Company has guaranteed that the proceeds received from the sale or transfer will not be less than $25 million. The Company has partnered with the group entities to design and manufacture battery components for the Power Solutions business.
	The carrying amounts and classification of assets (none of which are restricted) and liabilities included in the Company’s consolidated statements of financial position for the consolidated VIEs are as follows (in millions):
		December 31,		September 30,		December 31,
		2013		2013		2012
	Current assets	$	212	$	273	$	209
	Noncurrent assets	140		139		148
	Total assets	$	352	$	412	$	357
	Current liabilities	$	171	$	212	$	164
	Noncurrent liabilities	39		39		24
	Total liabilities	$	210	$	251	$	188
	The Company did not have a significant variable interest in any other consolidated VIEs for the presented reporting periods.
	Nonconsolidated VIEs
	As of September 30, 2013 and December 31, 2012, the Company had a 40% interest in an equity method investee whereby the investee is a VIE. The investee produces and sells lead-acid batteries of which the Company both purchases and supplies certain batteries to complement each investment partners’ portfolio. The Company had a contractual right to purchase the remaining 60% equity interest in the investee between May 2014 and May 2016 (the “call option”). If the Company did not exercise the call option prior to its expiration in May 2016, for a period of six months thereafter the Company was subject to a contractual obligation at the counterparty’s option to sell the Company’s equity investment in the investee to the counterparty (the “repurchase option”). The purchase price was fixed under both the call option and the repurchase option. Based upon the criteria set forth in ASC 810, the Company determined that the investee was a VIE as the equity holders, through their equity investments, may not participate fully in the entity’s residual economics. The Company was not the primary beneficiary as the Company did not have the power to make key operating decisions considered to be most significant to the VIE. Therefore, the investee was accounted for under the equity method of accounting as the Company’s interest exceeded 20% and the Company did not have a controlling interest. The investment balance included within investments in partially-owned affiliates in the consolidated statements of financial position at September 30, 2013 and December 31, 2012 was $56 million and $54 million, respectively, which represents the Company’s maximum exposure to loss. Current assets and liabilities related to the VIE were immaterial and represent normal course of business trade receivables and payables for all presented periods. In the first quarter of fiscal 2014, the Company purchased an additional 50% equity interest in the investee to bring the Company's total interest in the investee to 90%. As a result of this transaction, the fixed price call option and repurchase option no longer exist, and the Company consolidates the investee under the voting interest model. Refer to Note 3, "Acquisitions and Divestitures," of the notes to consolidated financial statements for additional information regarding this transaction.
	As mentioned previously within the “Consolidated VIEs” section above, during the three month period ended December 31, 2011, a pre-existing VIE was reorganized into three separate investments as a result of the counterparty exercising its option to put its interest to the Company. The reorganized group entities are considered to be VIEs as the other owner party has been provided decision making rights but does not have equity at risk. The Company is not considered to be the primary beneficiary of two of the entities as the Company cannot make key operating decisions considered to be most significant to the VIEs. Therefore, the entities are accounted for under the equity method of accounting as the Company’s interest exceeds 20% and the Company does not have a controlling interest. The Company’s maximum exposure to loss includes the partially-owned affiliate investment balance of $57 million, $57 million and $54 million at December 31, 2013, September 30, 2013 and December 31, 2012, respectively, as well as the subordinated loan from the Company, third party debt agreement and floor guaranty mentioned previously within the “Consolidated VIEs” section above. Current liabilities due to the VIEs are not material and represent normal course of business trade payables for all presented periods.
	The Company did not have a significant variable interest in any other nonconsolidated VIEs for the presented reporting periods.
	Restricted Cash
	At December 31, 2013, September 30, 2013 and December 31, 2012, the Company held restricted cash of approximately $24 million, $32 million and $21 million, respectively, within cash and cash equivalents. These amounts were collected from customers for payment of maintenance costs under contract, and withdrawals are restricted for this purpose.
	Retrospective Changes
	Certain amounts as of September 30, 2013 and December 31, 2012 have been revised to conform to the current year’s presentation.
	Effective October 1, 2013, the Company reorganized the reportable segments within its Building Efficiency business to align with its new management reporting structure and business activities. Prior to this reorganization, Building Efficiency was comprised of five reportable segments for financial reporting purposes: North America Systems, North America Service, Global Workplace Solutions, Asia and Other. As a result of this change, Building Efficiency is now comprised of four reportable segments for financial reporting purposes, with the only change being the combination of North America Systems and North America Service into one reportable segment called North America Systems and Service. Historical information has been revised to reflect the new Building Efficiency reportable segment structure.
	In the fourth quarter of fiscal 2013, the Company changed its method of inventory costing for certain inventory in its Power Solutions business to the first-in first-out (FIFO) method from the last-in first-out (LIFO) method. The Company's other businesses also determine costs using the FIFO method. Prior to the change, Power Solutions utilized two methods of inventory costing: LIFO for inventories in the U.S. and FIFO for inventories in other countries. The Company believes that the FIFO method is preferable as it better reflects the current value of inventory on the Company’s consolidated statement of financial position, provides better matching of revenues and expenses, results in uniformity across the Company’s global operations with respect to the method of inventory accounting and improves comparability with the Company’s peers. The change has been reported through retrospective application of the new policy to all periods presented and resulted in a $5 million increase in net income attributable to Johnson Controls, Inc., and no impact on diluted earnings per share for the three months ended December 31, 2012.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	Dec. 31, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Accounting Standards	'
	New Accounting Standards
	In July 2013, the FASB issued Accounting Standards Update (ASU) No. 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a similar Tax Loss, or a Tax Credit Carryforward Exists." ASU No. 2013-11 clarifies that companies should present an unrecognized tax benefit as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. ASU No. 2013-11 will be effective prospectively for the Company for the quarter ending December 31, 2014, with early adoption permitted. The Company is currently assessing the impact that adoption of this guidance may have on its consolidated statement of financial position. The adoption of this guidance will have no impact on the Company's consolidated results of operations.
	In March 2013, the FASB issued ASU No. 2013-05, "Foreign Currency Matters (Topic 830): Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity." ASU No. 2013-05 clarifies when companies should release the cumulative translation adjustment (CTA) into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity. Additionally, ASU No. 2013-05 states that CTA should be released into net income upon an acquirer obtaining control of an acquiree in which it held an equity interest immediately before the acquisition date (step acquisition). ASU No. 2013-05 will be effective prospectively for the Company for the quarter ending December 31, 2014, with early adoption permitted. The significance of this guidance for the Company is dependent on any future derecognition events involving the Company's foreign entities.
	In February 2013, the FASB issued ASU No. 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." ASU No. 2013-02 requires companies to provide information about the amounts reclassified out of accumulated other comprehensive income by component. Additionally, companies are required to disclose these reclassifications by each respective line item on the statements of income. ASU No. 2013-02 was effective for the Company for the quarter ended December 31, 2013. The adoption of this guidance had no impact on the Company's consolidated financial condition or results of operations. Refer to Note 14, "Equity and Noncontrolling Interests," of the notes to consolidated financial statements for disclosures regarding other comprehensive income.
	In December 2011, the FASB issued ASU No. 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities." ASU No. 2011-11 requires additional quantitative and qualitative disclosures of gross and net information regarding derivative instruments that are offset or eligible for offset in the consolidated statement of financial position. ASU No. 2011-11 was effective for the Company for the quarter ending December 31, 2013. The adoption of this guidance had no impact on the Company’s consolidated financial condition or results of operations. Refer to Note 15, "Derivative Instruments and Hedging Activities," of the notes to consolidated financial statements for disclosure of gross and net information regarding the Company's derivative instruments.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	3 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisition and Divestitures	'
	Acquisitions and Divestitures
	In the first quarter of fiscal 2014, the Company completed two acquisitions for a combined purchase price, net of cash acquired, of $128 million, all of which was paid in the three months ended December 31, 2013. The acquisitions in the aggregate were not material to the Company's consolidated financial statements. In connection with the acquisitions, the Company recorded goodwill of $102 million. The purchase price allocations may be subsequently adjusted to reflect final valuation studies. As a result of one of the acquisitions, which increased the Company's ownership from a noncontrolling to controlling interest, the Company recorded a non-cash gain of $19 million in equity income for the Power Solutions business to adjust the Company's existing equity investment in the partially-owned affiliate to fair value.
	In the first quarter of fiscal 2014, the Company completed one divestiture for a sales price of $13 million, all of which was received as of December 31, 2013. The divestiture was not material to the Company’s consolidated financial statements. In connection with the divestiture, the Company recorded a gain, net of transaction costs, of $9 million in the Automotive Experience Interiors segment. There was no change in goodwill as a result of this transaction.
	In the first quarter of fiscal 2014, the Company adjusted the purchase price allocation of certain fiscal 2013 acquisitions and recorded an addition to goodwill of $2 million.
	On January 13, 2014, the Company announced that it had reached a definitive agreement to sell the Automotive Experience Electronics business to Visteon Corporation, subject to regulatory and other approvals. The business is classified as held for sale in the consolidated statements of financial position as of December 31, 2013 and September 30, 2013. Refer to Note 4, "Assets and Liabilities Held for Sale," of the notes to consolidated financial statements for further disclosure related to the Company's assets and liabilities held for sale.
	In the first quarter of fiscal 2013, the Company made no acquisitions and had no divestitures.

Assets_and_Liabilities_Held_fo

Assets and Liabilities Held for Sale (Notes)	3 Months Ended
	Dec. 31, 2013
Assets and Liabilities Held for Sale [Abstract]	'
Assets and Liabilities Held for Sale	'
	4	Assets and Liabilities Held for Sale
	At September 30, 2013, the Company determined that certain of its businesses met the criteria to be classified as held for sale. The Automotive Experience Electronics segment and certain product lines of the Automotive Experience Interiors segment were classified as held for sale as of December 31, 2013 and September 30, 2013.
	The following table summarizes the carrying value of the assets and liabilities held for sale (in millions):
		December 31,		September 30,
		2013		2013
	Cash and cash equivalents	$	5	$	4
	Accounts receivable - net	173		197
	Inventories	134		124
	Other current assets	62		91
	Property, plant and equipment - net	167		167
	Goodwill	74		74
	Other intangible assets - net	60		57
	Investments in partially-owned affiliates	31		26
	Other noncurrent assets	71		64
	Assets held for sale	$	777	$	804
	Short-term debt	$	7	$	5
	Accounts payable	227		253
	Accrued compensation and benefits	32		46
	Other current liabilities	41		84
	Pension and postretirement benefits	11		13
	Other noncurrent liabilities	3		1
	Liabilities held for sale	$	321	$	402
	Assets and liabilities classified as held for sale were required to be recorded at the lower of carrying value or fair value less any costs to sell. Accordingly, the Company recorded an impairment charge of $41 million in the fourth quarter of fiscal 2013 to write down the long-lived assets related to certain product lines of the Automotive Experience Interiors segment to zero. In connection with the anticipated sale of those product lines, which is expected to occur in fiscal 2014, the Company expects to make a cash payment to the buyer to fund future operational improvement initiatives, which could result in a loss before income taxes of $75 million to $85 million, subject to final negotiations. In addition, the divestiture of the Automotive Experience Electronics segment could result in a gain or loss to the extent the ultimate selling price differs from the current carrying value of the net assets recorded.
	The Automotive Experience Electronics business did not meet the criteria to be classified as a discontinued operation primarily due to the status of transaction negotiations at December 31, 2013. The Automotive Experience Interiors product lines classified as held for sale are immaterial to the Company individually and in the aggregate, and do not constitute a distinguishable business in order to be classified as a discontinued operation.

PercentageofCompletion_Contrac

Percentage-of-Completion Contracts	3 Months Ended
	Dec. 31, 2013
Disclosure Percentage Of Completion Contracts Additional Information [Abstract]	'
Percentage-of-Completion Contracts	'
	Percentage-of-Completion Contracts
	The Building Efficiency business records certain long-term contracts under the percentage-of-completion method of accounting. Under this method, sales and gross profit are recognized as work is performed based on the relationship between actual costs incurred and total estimated costs at completion. The Company records costs and earnings in excess of billings on uncompleted contracts primarily within accounts receivable - net and billings in excess of costs and earnings on uncompleted contracts primarily within other current liabilities in the consolidated statements of financial position. Costs and earnings in excess of billings related to these contracts were $488 million, $489 million and $473 million at December 31, 2013, September 30, 2013 and December 31, 2012, respectively. Billings in excess of costs and earnings related to these contracts were $284 million, $263 million and $296 million at December 31, 2013, September 30, 2013 and December 31, 2012, respectively.

Inventories

Inventories	3 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	Inventories consisted of the following (in millions):
		December 31,		September 30,		December 31,
		2013		2013		2012
	Raw materials and supplies	$	1,112	$	1,086	$	1,120
	Work-in-process	402		459		435
	Finished goods	938		780		829
	Inventories	$	2,452	$	2,325	$	2,384
	In the fourth quarter of fiscal 2013, the Company changed its method of inventory costing for certain inventory in its Power Solutions business to the first-in first-out (FIFO) method from the last-in first-out (LIFO) method. Refer to Note 1, "Financial Statements," of the notes to consolidated financial statements for discussion of the Company's change in accounting method.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	3 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	Effective October 1, 2013, the Company reorganized the reportable segments within its Building Efficiency business to align with its new management reporting structure and business activities. Historical information has been revised to reflect the new Building Efficiency reportable segment structure. Refer to Note 17, “Segment Information,” of the notes to consolidated financial statements for further information.
	The changes in the carrying amount of goodwill in each of the Company’s reportable segments for the nine month period ended September 30, 2013 and the three month period ended December 31, 2013 were as follows (in millions):
		December 31,		Business Acquisitions			Business Divestitures			Impairments			Currency Translation and Other			September 30,
		2012														2013
	Building Efficiency
	North America Systems and Service	$	1,229	$	—		$	—		$	—		$	(1	)	$	1,228
	Global Workplace Solutions	187		79			—			—			(9		)	257
	Asia	390		—			—			—			(2		)	388
	Other	1,007		—			—			—			(4		)	1,003
	Automotive Experience
	Seating	2,495		187			(15		)	—			(8		)	2,659
	Interiors	409		—			—			(430		)	21			—
	Electronics	251		—			(251		)	—			—			—
	Power Solutions	1,048		—			—			—			6			1,054
	Total	$	7,016	$	266		$	(266	)	$	(430	)	$	3		$	6,589
		September 30,		Business Acquisitions			Business Divestitures			Impairments			Currency Translation and Other			December 31,
		2013														2013
	Building Efficiency
	North America Systems and Service	$	1,228	$	—		$	—		$	—		$	—		$	1,228
	Global Workplace Solutions	257		—			—			—			(1		)	256
	Asia	388		—			—			—			(1		)	387
	Other	1,003		—			—			—			1			1,004
	Automotive Experience
	Seating	2,659		2			—			—			17			2,678
	Interiors	—		—			—			—			—			—
	Electronics	—		—			—			—			—			—
	Power Solutions	1,054		102			—			—			8			1,164
	Total	$	6,589	$	104		$	—		$	—		$	24		$	6,717
	The nine months ended September 30, 2013 Automotive Experience Electronics business divestitures amount includes $74 million of goodwill transferred to assets held for sale on the consolidated statement of financial position. Refer to Note 4, "Assets and Liabilities Held for Sale," of the notes to consolidated financial statements for further information regarding the Company's disposal groups classified as held for sale.
	Based on a combination of factors, including the recent operating results of the Automotive Experience Interiors business, restrictions on future capital and restructuring funding, and the Company's announced intention to explore strategic options related to this business, the Company's forecasted cash flow estimates used in the goodwill assessment were negatively impacted as of September 30, 2013. As a result, the Company concluded that the carrying value of the Interiors reporting unit exceeded its fair value as of September 30, 2013. The Company recorded a goodwill impairment charge of $430 million in the fourth quarter of fiscal 2013, which was determined by comparing the carrying value of the reporting unit's goodwill with the implied fair value of goodwill for the reporting unit. The assumptions included in the impairment test require judgment, and changes to these inputs could impact the results of the calculation. Other than management's internal projections of future cash flows, the primary assumptions used in the impairment test were the weighted-average cost of capital and long-term growth rates. Although the Company's cash flow forecasts are based on assumptions that are considered reasonable by management and consistent with the plans and estimates management is using to operate the underlying business, there is significant judgment in determining the expected future cash flows attributable to the Interiors business.
	The Company’s other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of (in millions):
		December 31, 2013								September 30, 2013								December 31, 2012
		Gross		Accumulated			Net			Gross			Accumulated			Net		Gross		Accumulated			Net
		Carrying		Amortization						Carrying			Amortization					Carrying		Amortization
		Amount								Amount								Amount
	Amortized intangible assets
	Patented technology	$	91	$	(52	)	$	39		$	92		$	(53	)	$	39	$	168	$	(97	)	$	71
	Customer relationships	609		(149		)	460			537			(138		)	399		520		(124		)	396
	Miscellaneous	353		(99		)	254			336			(91		)	245		325		(77		)	248
	Total amortized intangible assets	1,053		(300		)	753			965			(282		)	683		1,013		(298		)	715
	Unamortized intangible assets
	Trademarks	317		—			317			316			—			316		316		—			316
	Total intangible assets	$	1,370	$	(300	)	$	1,070		$	1,281		$	(282	)	$	999	$	1,329	$	(298	)	$	1,031
	Amortization of other intangible assets for the three month periods ended December 31, 2013 and 2012 was $20 million and $18 million, respectively. Excluding the impact of any future acquisitions, the Company anticipates amortization for fiscal 2015, 2016, 2017, 2018 and 2019 will be approximately $82 million, $76 million, $71 million, $64 million and $55 million per year, respectively.

Product_Warranties

Product Warranties	3 Months Ended
	Dec. 31, 2013
Product Warranties Disclosures [Abstract]	'
Product Warranties	'
	Product Warranties
	The Company offers warranties to its customers depending upon the specific product and terms of the customer purchase agreement. A typical warranty program requires that the Company replace defective products within a specified time period from the date of sale. The Company records an estimate for future warranty-related costs based on actual historical return rates and other known factors. Based on analysis of return rates and other factors, the Company’s warranty provisions are adjusted as necessary. The Company monitors its warranty activity and adjusts its reserve estimates when it is probable that future warranty costs will be different than those estimates.
	The Company’s product warranty liability is recorded in the consolidated statements of financial position in other current liabilities if the warranty is less than one year and in other noncurrent liabilities if the warranty extends longer than one year.
	The changes in the carrying amount of the Company’s total product warranty liability, including extended warranties for which deferred revenue is recorded, for the three months ended December 31, 2013 and 2012 were as follows (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Balance at beginning of period	$	256		$	278
	Accruals for warranties issued during the period	70			67
	Accruals related to pre-existing warranties (including changes in estimates)	1			(4		)
	Settlements made (in cash or in kind) during the period	(53		)	(66		)
	Balance at end of period	$	274		$	275

Significant_Restructuring_Cost

Significant Restructuring Costs	3 Months Ended
	Dec. 31, 2013
Restructuring Charges [Abstract]	'
Significant Restructuring Costs	'
	Significant Restructuring Costs
	To better align its resources with its growth strategies and reduce the cost structure of its global operations to address the softness in certain underlying markets, the Company committed to a significant restructuring plan in fiscal 2012 and recorded $297 million of restructuring and impairment costs, of which $52 million was recorded in the third quarter and $245 million in the fourth quarter of fiscal 2012. As a continuation of its restructuring plan announced in fiscal 2012, the Company recorded $985 million of restructuring and impairment costs in fiscal 2013, of which $84 million was recorded in the second quarter, $143 million in the third quarter and $758 million in the fourth quarter of fiscal 2013. The restructuring actions related to cost reduction initiatives in the Company’s Automotive Experience, Building Efficiency and Power Solutions businesses and included planned workforce reductions, plant closures, and asset and goodwill impairments. The restructuring actions are expected to be substantially complete by the end of fiscal 2014.
	The following table summarizes the changes in the Company’s restructuring reserve, included within other current liabilities in the consolidated statements of financial position (in millions):
		Employee Severance and Termination Benefits			Other		Currency		Total
							Translation
	Balance at September 30, 2013	$	441		$	3	$	2	$	446
	Utilized—cash	(62		)	—		—		(62		)
	Utilized—noncash	—			—		5		5
	Transfers from liabilities held for sale	31			—		—		31
	Balance at December 31, 2013	$	410		$	3	$	7	$	420
	The $31 million of transfers from liabilities held for sale represent restructuring reserves that were included in liabilities held for sale in the consolidated statement of financial position at September 30, 2013, but are excluded from liabilities held for sale at December 31, 2013 based on recent transaction negotiations. See Note 4, "Assets and Liabilities Held for Sale," of the notes to consolidated financial statements for further information regarding the Company's disposal groups classified as held for sale.
	The Company's restructuring plans include workforce reductions of approximately 16,700 employees (9,500 for the Automotive Experience business, 6,200 for the Building Efficiency business and 1,000 for the Power Solutions business). Restructuring charges associated with employee severance and termination benefits are paid over the severance period granted to each employee or on a lump sum basis in accordance with individual severance agreements. As of December 31, 2013, approximately 9,100 of the employees have been separated from the Company pursuant to the restructuring plans. In addition, the restructuring plans include twenty-one plant closures (seventeen for Automotive Experience, two for Power Solutions and two for Building Efficiency). As of December 31, 2013, ten of the twenty-one plants have been closed.
	Company management closely monitors its overall cost structure and continually analyzes each of its businesses for opportunities to consolidate current operations, improve operating efficiencies and locate facilities in low cost countries in close proximity to customers. This ongoing analysis includes a review of its manufacturing, engineering and purchasing operations, as well as the overall global footprint for all its businesses. Because of the importance of new vehicle sales by major automotive manufacturers to operations, the Company is affected by the general business conditions in this industry. Future adverse developments in the automotive industry could impact the Company’s liquidity position, lead to impairment charges and/or require additional restructuring of its operations.

Income_Taxes

Income Taxes	3 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	In calculating the provision for income taxes, the Company uses an estimate of the annual effective tax rate based upon the facts and circumstances known at each interim period. On a quarterly basis, the actual effective tax rate is adjusted, as appropriate, based upon changed facts and circumstances, if any, as compared to those forecasted at the beginning of the fiscal year and each interim period thereafter. For the three months ended December 31, 2013 and 2012, the Company's effective tax rate was 20%. The effective rate was lower than the U.S. federal statutory rate of 35% primarily due to global tax planning and foreign tax rate differentials.
	Valuation Allowance
	The Company reviews the realizability of its deferred tax assets on a quarterly basis, or whenever events or changes in circumstances indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred tax asset are considered, along with any other positive or negative evidence. Since future financial results may differ from previous estimates, periodic adjustments to the Company’s valuation allowances may be necessary.
	In the first quarter of fiscal 2014, the Company determined that it was more likely than not that the deferred tax asset associated with a capital loss in Mexico would not be utilized. Therefore, the Company recorded a $21 million valuation allowance as income tax expense.
	Uncertain Tax Positions
	At September 30, 2013, the Company had gross tax effected unrecognized tax benefits of $1,345 million, of which $1,198 million, if recognized, would impact the effective tax rate. Total net accrued interest at September 30, 2013 was approximately $84 million (net of tax benefit). The net change in interest and penalties during the three months ended December 31, 2013 and 2012 was not material. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense.
	In the U.S., fiscal years 2010 through 2012 are currently under exam by the Internal Revenue Service (IRS) and 2004 through 2009 are currently under IRS Appeals. Additionally, the Company is currently under exam in the following major foreign jurisdictions:
	Tax Jurisdiction	Tax Years Covered
	Belgium	2011 - 2012
	Brazil	2004 - 2008
	Canada	2007 - 2010
	France	2002 - 2012
	Germany	2001 - 2010
	Italy	2005 - 2009
	Korea	2008 - 2012
	Mexico	2003 - 2004, 2007 - 2012
	The Company expects that certain tax examinations, appellate proceedings and/or tax litigation will conclude within the next twelve months, the impact of which is not expected to be significant to the Company's consolidated financial statements.
	Impacts of Tax Legislation
	As a result of changes to Mexican tax law in the first quarter of fiscal 2014, the Company recorded a benefit to income tax expense of $25 million. Tax legislation was also adopted in various other jurisdictions during the three month period ended December 31, 2013. These law changes did not have a material impact on the Company’s consolidated financial statements.
	The “look-through rule,” under subpart F of the U.S. Internal Revenue Code, expired for the Company on September 30, 2012. The “look-through rule” had provided an exception to the U.S. taxation of certain income generated by foreign subsidiaries. The rule was extended in January 2013 retroactive to the beginning of the Company’s 2013 fiscal year; however, because the bill was not signed into law until January 2013 it was not in effect as of December 31, 2012. The effect of the “look-through rule” expiration did not have a material impact on the Company’s consolidated financial statements for the quarter ended December 31, 2012.

Pension_and_Postretirement_Pla

Pension and Postretirement Plans	3 Months Ended
	Dec. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Pension and Postretirement Plans	'
	Pension and Postretirement Plans
	The components of the Company’s net periodic benefit costs associated with its defined benefit pension and postretirement plans are shown in the tables below in accordance with ASC 715, "Compensation – Retirement Benefits" (in millions):
		Pension Benefits
		U.S. Plans						Non-U.S. Plans
		Three Months Ended						Three Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
	Service cost	$	18		$	23		$	10		$	10
	Interest cost	34			38			18			16
	Expected return on plan assets	(51		)	(58		)	(19		)	(18		)
	Curtailment gain	—			—			—			(24		)
	Net periodic benefit cost (credit)	$	1		$	3		$	9		$	(16	)
		Postretirement Benefits
		Three Months Ended
		December 31,
		2013			2012
	Service cost	$	1		$	1
	Interest cost	3			3
	Expected return on plan assets	(3		)	(3		)
	Amortization of prior service credit	(2		)	(4		)
	Net periodic benefit credit	$	(1	)	$	(3	)
	The curtailment gain in the three months ended December 31, 2012 was the result of a lost contract in the Building Efficiency Global Workplace Solutions segment.

Debt_and_Financing_Arrangement

Debt and Financing Arrangements	3 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt and Financing Arrangements	'
	Debt and Financing Arrangements
	During the quarter ended December 31, 2013, a $35 million and a $100 million committed revolving credit facility expired. The Company entered into a new $35 million committed revolving credit facility scheduled to expire in November 2014 and a new $100 million committed revolving credit facility scheduled to expire in December 2014. As of December 31, 2013, there were no draws on either facility.
	During the quarter ended December 31, 2013, the Company entered into a five-year, 220 million euro, floating rate credit facility scheduled to mature in fiscal 2019. The Company drew on the full credit facility during the quarter ended December 31, 2013. Proceeds from the facility were used for general corporate purposes.
	During the quarter ended December 31, 2013, the Company entered into a nine-month, $500 million, floating rate term loan scheduled to mature in September 2014. Proceeds from the term loan were used for general corporate purposes.
	During the quarter ended December 31, 2012, the Company entered into a five-year, 70 million euro, floating rate credit facility scheduled to mature in fiscal 2018. The Company drew on the full credit facility during the quarter ended December 31, 2012. Proceeds from the facility were used for general corporate purposes.
	During the quarter ended December 31, 2012, the Company retired $100 million in principal amount, plus accrued interest, of its 5.8% fixed rate notes that matured November 2012. The Company used cash to fund the payment.
	Net Financing Charges
	The Company's net financing charges line item in the consolidated statements of income for the three month periods ended December 31, 2013 and 2012 contained the following components (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Interest expense, net of capitalized interest costs	$	57		$	60
	Banking fees and bond cost amortization	4			5
	Interest income	(3		)	(4		)
	Net foreign exchange results for financing activities	(3		)	—
	Net financing charges	$	55		$	61

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	The Company presents both basic and diluted earnings per share (EPS) amounts. Basic EPS is calculated by dividing net income attributable to Johnson Controls, Inc. by the weighted average number of common shares outstanding during the reporting period. Diluted EPS is calculated by dividing net income attributable to Johnson Controls, Inc. by the weighted average number of common shares and common equivalent shares outstanding during the reporting period that are calculated using the treasury stock method for stock options and unvested restricted stock. The treasury stock method assumes that the Company uses the proceeds from the exercise of awards to repurchase common stock at the average market price during the period. The assumed proceeds under the treasury stock method include the purchase price that the grantee will pay in the future, compensation cost for future service that the Company has not yet recognized and any windfall tax benefits that would be credited to capital in excess of par value when the award generates a tax deduction. If there would be a shortfall resulting in a charge to capital in excess of par value, such an amount would be a reduction of the proceeds. For unvested restricted stock, assumed proceeds under the treasury stock method would include unamortized compensation cost and windfall tax benefits or shortfalls.
	The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
		Three Months Ended
		December 31,
		2013		2012
	Income Available to Common Shareholders
	Basic and diluted income available to common shareholders	$	469	$	359
	Weighted Average Shares Outstanding
	Basic weighted average shares outstanding	674.1		683.1
	Effect of dilutive securities:
	Stock options and unvested restricted stock	8.1		3.6
	Diluted weighted average shares outstanding	682.2		686.7
	Antidilutive Securities
	Options to purchase common shares	0.2		2.7
	During the three months ended December 31, 2013, the Company declared a dividend of $0.22 per common share, which was paid in the month subsequent to the end of the fiscal quarter. The Company declared and paid a dividend of $0.19 per common share in the three months ended December 31, 2012.

Equity_and_Noncontrolling_Inte

Equity and Noncontrolling Interests	3 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Equity and Noncontrolling Interests	'
	Equity and Noncontrolling Interests
	The following schedule presents changes in consolidated equity attributable to Johnson Controls, Inc. and noncontrolling interests (in millions):
		Three Months Ended December 31, 2013									Three Months Ended December 31, 2012
		Equity			Equity			Total Equity			Equity			Equity			Total Equity
		Attributable to			Attributable to						Attributable to			Attributable to
		Johnson			Noncontrolling						Johnson			Noncontrolling
		Controls, Inc.			Interests						Controls, Inc.			Interests
	Beginning balance, September 30	$	12,314		$	260		$	12,574		$	11,625		$	148		$	11,773
	Total comprehensive income:
	Net income	469			22			491			359			11			370
	Foreign currency translation adjustments	(14		)	—			(14		)	44			(1		)	43
	Realized and unrealized losses on derivatives	(1		)	—			(1		)	(1		)	—			(1		)
	Realized and unrealized gains (losses) on marketable common stock	(2		)	—			(2		)	3			—			3
	Pension and postretirement plans	(1		)	—			(1		)	(9		)	—			(9		)
	Other comprehensive income (loss)	(18		)	—			(18		)	37			(1		)	36
	Comprehensive income	451			22			473			396			10			406
	Other changes in equity:
	Cash dividends — common stock	(147		)	—			(147		)	(130		)	—			(130		)
	Dividends attributable to noncontrolling interests	—			(21		)	(21		)	—			(3		)	(3		)
	Redemption value adjustment attributable to redeemable noncontrolling interests	—			—			—			2			—			2
	Repurchases of common stock	(1,199		)	—			(1,199		)	—			—			—
	Other, including options exercised	112			—			112			40			—			40
	Ending balance, December 31	$	11,531		$	261		$	11,792		$	11,933		$	155		$	12,088
	In November 2013, the Company's Board of Directors authorized a $3 billion increase in the Company's share repurchase program, which brought the total authorized amount under the repurchase program to $3.65 billion. The share repurchase program does not have an expiration date and may be amended or terminated by the Board of Directors at any time without prior notice. During the first quarter of fiscal 2014, the Company repurchased approximately $1.2 billion of shares, including $800 million as part of an accelerated share repurchase agreement, under these authorizations.
	The Company consolidates certain subsidiaries in which the noncontrolling interest party has within their control the right to require the Company to redeem all or a portion of its interest in the subsidiary. The redeemable noncontrolling interests are reported at their estimated redemption value. Any adjustment to the redemption value impacts retained earnings but does not impact net income. Redeemable noncontrolling interests which are redeemable only upon future events, the occurrence of which is not currently probable, are recorded at carrying value.
	The following schedule presents changes in the redeemable noncontrolling interests (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Beginning balance, September 30	$	157		$	253
	Net income	14			19
	Dividends	(2		)	—
	Redemption value adjustment	—			(2		)
	Ending balance, December 31	$	169		$	270
	The following schedule presents changes in accumulated other comprehensive income (AOCI) attributable to Johnson Controls, Inc. (in millions, net of tax):
		Three Months Ended
		December 31,
		2013			2012
	Foreign currency translation adjustments
	Balance at beginning of period	$	392		$	413
	Aggregate adjustment for the period (net of tax effect of $6 and $6)	(14		)	44
	Balance at end of period	378			457
	Realized and unrealized gains (losses) on derivatives
	Balance at beginning of period	7			12
	Current period changes in fair value (net of tax effect of $0 and $1)	—			3
	Reclassification to income (net of tax effect of $0 and $(2)) *	(1		)	(4		)
	Balance at end of period	6			11
	Realized and unrealized gains (losses) on marketable common stock
	Balance at beginning of period	7			5
	Current period changes in fair value (net of tax effect of $0)	(1		)	3
	Reclassification to income (net of tax effect of $0) **	(1		)	—
	Balance at end of period	5			8
	Pension and postretirement plans
	Balance at beginning of period	12			28
	Reclassification to income (net of tax effect of $(1) and $(4)) ***	(1		)	(9		)
	Balance at end of period	11			19
	Accumulated other comprehensive income, end of period	$	400		$	495
	* Refer to Note 15, "Derivative Instruments and Hedging Activities," of the notes to consolidated financial statements for disclosure of the line items on the consolidated statements of income affected by reclassifications from AOCI into income related to derivatives.
	** Refer to Note 16, "Fair Value Measurements," of the notes to consolidated financial statements for disclosure of the line item on the consolidated statements of income affected by reclassifications from AOCI into income related to marketable common stock.
	*** Refer to Note 11, "Pension and Postretirement Plans," of the notes to consolidated financial statements for disclosure of the components of the Company's net periodic benefit costs associated with its defined benefit pension and postretirement plans. For the three months ended December 31, 2013, the amount reclassified from AOCI into income for pension and postretirement plans was primarily recorded in cost of sales on the consolidated statement of income. For the three months ended December 31, 2012, the amount reclassified from AOCI into income was split approximately evenly between cost of sales and selling, general and administrative expenses on the consolidated statement of income.

Derivative_Instruments_and_Hed

Derivative Instruments and Hedging Activities	3 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments and Hedging Activities	'
	Derivative Instruments and Hedging Activities
	The Company selectively uses derivative instruments to reduce market risk associated with changes in foreign currency, commodities, stock-based compensation liabilities and interest rates. Under Company policy, the use of derivatives is restricted to those intended for hedging purposes; the use of any derivative instrument for speculative purposes is strictly prohibited. A description of each type of derivative utilized by the Company to manage risk is included in the following paragraphs. In addition, refer to Note 16, “Fair Value Measurements,” of the notes to consolidated financial statements for information related to the fair value measurements and valuation methods utilized by the Company for each derivative type.
	The Company has global operations and participates in the foreign exchange markets to minimize its risk of loss from fluctuations in foreign currency exchange rates. The Company primarily uses foreign currency exchange contracts to hedge certain of its foreign exchange rate exposures. The Company hedges 70% to 90% of the nominal amount of each of its known foreign exchange transactional exposures.
	The Company has entered into cross-currency interest rate swaps to selectively hedge portions of its net investment in Japan. The currency effects of the cross-currency interest rate swaps are reflected in the accumulated other comprehensive income (AOCI) account within shareholders’ equity attributable to Johnson Controls, Inc. where they offset gains and losses recorded on the Company’s net investment in Japan. At December 31, 2013, the Company had four cross-currency interest rate swaps outstanding totaling 20 billion yen. At September 30, 2013, the Company had five cross-currency interest rate swaps outstanding totaling 25 billion yen. At December 31, 2012, the Company had three cross-currency interest rate swaps outstanding totaling 20 billion yen.
	The Company uses commodity contracts in the financial derivatives market in cases where commodity price risk cannot be naturally offset or hedged through supply base fixed price contracts. Commodity risks are systematically managed pursuant to policy guidelines. As cash flow hedges, the effective portion of the hedge gains or losses due to changes in fair value are initially recorded as a component of AOCI and are subsequently reclassified into earnings when the hedged transactions, typically sales or costs related to sales, occur and affect earnings. Any ineffective portion of the hedge is reflected in the consolidated statements of income. The maturities of the commodity contracts coincide with the expected purchase of the commodities. The Company had the following outstanding commodity hedge contracts that hedge forecasted purchases:
					Volume Outstanding as of
	Commodity		Units		December 31, 2013			September 30, 2013			December 31, 2012
	Copper		Pounds		12,070,000			14,705,000			11,960,000
	Lead		Metric Tons		7,500			23,900			23,700
	Aluminum		Metric Tons		1,693			2,709			2,084
	Tin		Metric Tons		1,504			2,052			1,008
	The Company selectively uses equity swaps to reduce market risk associated with certain of its stock-based compensation plans, such as its deferred compensation plans. These equity compensation liabilities increase as the Company’s stock price increases and decrease as the Company’s stock price decreases. In contrast, the value of the swap agreement moves in the opposite direction of these liabilities, allowing the Company to fix a portion of the liabilities at a stated amount. As of December 31, 2013, September 30, 2013 and December 31, 2012, the Company had hedged approximately 4.6 million, 4.4 million and 4.5 million shares of its common stock, respectively.
	The Company selectively uses interest rate swaps to reduce market risk associated with changes in interest rates for its fixed-rate notes. As fair value hedges, the interest rate swaps and related debt balances are valued under a market approach using publicized swap curves. Changes in the fair value of the swap and hedged portion of the debt are recorded in the consolidated statements of income. In the second quarter of fiscal 2011, the Company entered into a fixed to floating interest rate swap totaling $100 million to hedge the coupon of its 5.8% notes which matured on November 15, 2012, two fixed to floating interest rate swaps totaling $300 million to hedge the coupon of its 4.875% notes which matured on September 15, 2013, and five fixed to floating interest rate swaps totaling $450 million to hedge the coupon of its 1.75% notes maturing March 1, 2014. In the fourth quarter of fiscal 2013, the Company entered into a fixed to floating interest rate swap totaling approximately $125 million to hedge the coupon of its 7.70% notes maturing March 1, 2015. Additionally, in the fourth quarter of fiscal 2013, the Company entered into four fixed to floating interest rate swaps totaling $800 million to hedge the coupon of its 5.50% notes maturing January 15, 2016. There were ten interest rate swaps outstanding as of December 31, 2013 and September 30, 2013, and seven interest rate swaps outstanding as of December 31, 2012.
	In September 2005, the Company entered into three forward treasury lock agreements to reduce the market risk associated with changes in interest rates associated with the Company’s anticipated fixed-rate note issuance to finance the acquisition of York International (cash flow hedge). The three forward treasury lock agreements, which had a combined notional amount of $1.3 billion, fixed a portion of the future interest cost for 5-year, 10-year and 30-year notes. The fair value of each treasury lock agreement, or the difference between the treasury lock reference rate and the fixed rate at time of note issuance, is amortized to interest expense over the life of the respective note issuance. In January 2006, in connection with the Company’s debt refinancing, the three forward treasury lock agreements were terminated.
	The following table presents the location and fair values of derivative instruments and hedging activities included in the Company’s consolidated statements of financial position (in millions):
		Derivatives and Hedging Activities Designated as												Derivatives and Hedging Activities Not Designated as Hedging Instruments under ASC 815
		Hedging Instruments under ASC 815
		December 31,				30-Sep-13				December 31,				December 31,			30-Sep-13			December 31,
		2013								2012				2013						2012
	Other current assets
	Foreign currency exchange derivatives	$	21			$	19			$	10			$	14		$	14		$	4
	Commodity derivatives	5				8				8				—			—			—
	Interest rate swaps	1				2				2				—			—			—
	Cross-currency interest rate swaps	19				7				21				—			—			—
	Other noncurrent assets
	Interest rate swaps	4				3				5				—			—			—
	Equity swap	—				—				—				236			183			138
	Total assets	$	50			$	39			$	46			$	250		$	197		$	142
	Other current liabilities
	Foreign currency exchange derivatives	$	24			$	21			$	12			$	12		$	11		$	5
	Commodity derivatives	1				3				—				—			—			—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	451				452				301				—			—			—
	Long-term debt
	Fixed rate debt swapped to floating	928				927				455				—			—			—
	Total liabilities	$	1,404			$	1,403			$	768			$	12		$	11		$	5
	The Company enters into International Swaps and Derivatives Associations (ISDA) master netting agreements with counterparties that permit the net settlement of amounts owed under the derivative contracts. The master netting agreements generally provide for net settlement of all outstanding contracts with a counterparty in the case of an event of default or a termination event. The Company has not elected to offset the fair value positions of the derivative contracts recorded in the consolidated statements of financial position. Collateral is generally not required of the Company or the counterparties under the master netting agreements. As of December 31, 2013, September 30, 2013 and December 31, 2012, no cash collateral was received or pledged under the master netting agreements.
	The gross and net amounts of derivative assets and liabilities were as follows (in millions):
		Fair Value of Assets												Fair Value of Liabilities
		December 31,				30-Sep-13				December 31,				December 31,			30-Sep-13			December 31,
		2013								2012				2013						2012
	Gross amount recognized	$	300			$	236			$	188			$	1,416		$	1,414		$	773
	Gross amount eligible for offsetting	(9		)		(9		)		(7		)		(9		)	(9		)	(7		)
	Net amount	$	291			$	227			$	181			$	1,407		$	1,405		$	766
	The following tables present the location and amount of the effective portion of gains and losses gross of tax on derivative instruments and related hedge items reclassified from AOCI into the Company’s consolidated statements of income for the three months ended December 31, 2013 and 2012 and amounts recorded in AOCI net of tax in the consolidated statements of financial position (in millions):
					Amount of Gain (Loss) Reclassified from AOCI into Income
	Derivatives in ASC 815 Cash Flow Hedging Relationships		Location of Gain (Loss) Reclassified from AOCI into Income		Three Months Ended December 31,
					2013				2012
	Foreign currency exchange derivatives		Cost of sales		$	2			$	1
	Commodity derivatives		Cost of sales		(1		)		5
	Total				$	1			$	6
	Derivatives in ASC 815 Cash Flow Hedging Relationships		Amount of Gain (Loss) Recognized in AOCI on Derivative
			December 31, 2013				September 30, 2013				December 31, 2012
	Foreign currency exchange derivatives		$	(4	)		$	(3	)		$	(2	)
	Commodity derivatives		3				3				5
	Forward treasury locks		7				7				8
	Total		$	6			$	7			$	11
					Amount of Gain (Loss) Recognized in Income on Derivative
	Derivatives in ASC 815 Fair Value Hedging Relationships		Location of Gain (Loss) Recognized in Income on Derivative		Three Months Ended December 31,
					2013				2012
	Interest rate swaps		Net financing charges		$	—			$	(1	)
	Fixed rate debt swapped to floating		Net financing charges		—				1
	Total				$	—			$	—
				Amount of Gain (Loss) Recognized in Income on Derivative
Derivatives Not Designated as Hedging Instruments under ASC 815		Location of Gain (Loss) Recognized in Income on Derivative		Three Months Ended December 31,
				2013				2012
Foreign currency exchange derivatives		Cost of sales		$	(1	)		$	—
Foreign currency exchange derivatives		Net financing charges		3				(1		)
Foreign currency exchange derivatives		Provision for income taxes		—				4
Equity swap		Selling, general and administrative		44				15
Total				$	46			$	18
The amount of gains recognized in cumulative translation adjustment (CTA) within AOCI on the effective portion of outstanding net investment hedges was $11 million, $4 million and $12 million at December 31, 2013, September 30, 2013 and December 31, 2012, respectively. For the three months ended December 31, 2013 and 2012, no gains or losses were reclassified from CTA into income for the Company’s outstanding net investment hedges, and no gains or losses were recognized in income for the ineffective portion of cash flow hedges.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	ASC 820, “Fair Value Measurement,” defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 also establishes a three-level fair value hierarchy that prioritizes information used in developing assumptions when pricing an asset or liability as follows:
	Level 1: Observable inputs such as quoted prices in active markets;
	Level 2: Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and
	Level 3: Unobservable inputs where there is little or no market data, which requires the reporting entity to develop its own assumptions.
	ASC 820 requires the use of observable market data, when available, in making fair value measurements. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement.
	Recurring Fair Value Measurements
	The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value as of December 31, 2013, September 30, 2013 and December 31, 2012 (in millions):
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		31-Dec-13		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
	Foreign currency exchange derivatives	$	35	$	—	$	35	$	—
	Commodity derivatives	5		—		5		—
	Interest rate swaps	1		—		1		—
	Cross-currency interest rate swap	19		—		19		—
	Other noncurrent assets
	Interest rate swaps	4		—		4		—
	Investments in marketable common stock	25		25		—		—
	Equity swap	236		236		—		—
	Total assets	$	325	$	261	$	64	$	—
	Other current liabilities
	Foreign currency exchange derivatives	$	36	$	—	$	36	$	—
	Commodity derivatives	1		—		1		—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	451		—		451		—
	Long-term debt
	Fixed rate debt swapped to floating	928		—		928		—
	Total liabilities	$	1,416	$	—	$	1,416	$	—
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		30-Sep-13		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
	Foreign currency exchange derivatives	$	33	$	—	$	33	$	—
	Commodity derivatives	8		—		8		—
	Interest rate swaps	2		—		2		—
	Cross-currency interest rate swaps	7		—		7		—
	Other noncurrent assets
	Interest rate swaps	3		—		3		—
	Investments in marketable common stock	30		30		—		—
	Equity swap	183		183		—		—
	Total assets	$	266	$	213	$	53	$	—
	Other current liabilities
	Foreign currency exchange derivatives	$	32	$	—	$	32	$	—
	Commodity derivatives	3		—		3		—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	452		—		452		—
	Long-term debt
	Fixed rate debt swapped to floating	927		—		927		—
	Total liabilities	$	1,414	$	—	$	1,414	$	—
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		31-Dec-12		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
Foreign currency exchange derivatives	$	14	$	—	$	14	$	—
Commodity derivatives	8		—		8		—
Interest rate swaps	2		—		2		—
Cross-currency interest rate swaps	21		—		21		—
Other noncurrent assets
Interest rate swaps	5		—		5		—
Investments in marketable common stock	32		32		—		—
Equity swap	138		138		—		—
Total assets	$	220	$	170	$	50	$	—
Other current liabilities
Foreign currency exchange derivatives	$	17	$	—	$	17	$	—
Current portion of long-term debt
Fixed rate debt swapped to floating	301		—		301		—
Long-term debt
Fixed rate debt swapped to floating	455		—		455		—
Total liabilities	$	773	$	—	$	773	$	—
Valuation Methods
Foreign currency exchange derivatives – The Company selectively hedges anticipated transactions that are subject to foreign exchange rate risk primarily using foreign currency exchange hedge contracts. The foreign currency exchange derivatives are valued under a market approach using publicized spot and forward prices. As cash flow hedges under ASC 815, the effective portion of the hedge gains or losses due to changes in fair value are initially recorded as a component of accumulated other comprehensive income and are subsequently reclassified into earnings when the hedged transactions occur and affect earnings. Any ineffective portion of the hedge is reflected in the consolidated statements of income. These contracts were highly effective in hedging the variability in future cash flows attributable to changes in currency exchange rates at December 31, 2013, September 30, 2013 and December 31, 2012. The fair value of foreign currency exchange derivatives not designated as hedging instruments under ASC 815 are recorded in the consolidated statements of income.
Commodity derivatives – The Company selectively hedges anticipated transactions that are subject to commodity price risk, primarily using commodity hedge contracts, to minimize overall price risk associated with the Company’s purchases of lead, copper, tin and aluminum. The commodity derivatives are valued under a market approach using publicized prices, where available, or dealer quotes. As cash flow hedges, the effective portion of the hedge gains or losses due to changes in fair value are initially recorded as a component of accumulated other comprehensive income and are subsequently reclassified into earnings when the hedged transactions, typically sales or cost related to sales, occur and affect earnings. Any ineffective portion of the hedge is reflected in the consolidated statements of income. These contracts were highly effective in hedging the variability in future cash flows attributable to changes in commodity prices at December 31, 2013, September 30, 2013 and December 31, 2012.
Interest rate swaps and related debt – The Company selectively uses interest rate swaps to reduce market risk associated with changes in interest rates for its fixed-rate notes. As fair value hedges, the interest rate swaps and related debt balances are valued under a market approach using publicized swap curves. Changes in the fair value of the swap and hedged portion of the debt are recorded in the consolidated statements of income. In the second quarter of fiscal 2011, the Company entered into a fixed to floating interest rate swap totaling $100 million to hedge the coupon of its 5.8% notes which matured on November 15, 2012, two fixed to floating interest rate swaps totaling $300 million to hedge the coupon of its 4.875% notes which matured on September 15, 2013 and five fixed to floating interest rate swaps totaling $450 million to hedge the coupon of its 1.75% notes maturing March 1, 2014. In the fourth quarter of fiscal 2013, the Company entered into a fixed to floating interest rate swap totaling approximately $125 million to hedge the coupon of its 7.70% notes maturing March 1, 2015. Additionally, in the fourth quarter of fiscal 2013, the Company entered into four fixed to floating interest rate swaps totaling $800 million to hedge the coupon of its 5.50% notes maturing January 15, 2016. There were ten interest rate swaps outstanding as of December 31, 2013 and September 30, 2013, and seven interest rate swaps outstanding as of December 31, 2012.
Cross-currency interest rate swaps – The Company selectively uses cross-currency interest rate swaps to hedge the foreign currency rate risk associated with certain of its investments in Japan. The cross-currency interest rate swaps are valued using observable market data. Changes in the market value of the swaps are reflected in the foreign currency translation adjustments component of accumulated other comprehensive income where they offset gains and losses recorded on the Company’s net investment in Japan. At December 31, 2013 the Company had four cross-currency interest rate swaps outstanding totaling 20 billion yen. At September 30, 2013, the Company had five cross-currency interest rate swaps outstanding totaling 25 billion yen. At December 31, 2012, the Company had three cross-currency interest rate swaps outstanding totaling 20 billion yen.
Investments in marketable common stock – The Company invests in certain marketable common stock, which is valued under a market approach using publicized share prices. As of December 31, 2013, September 30, 2013 and December 31, 2012, the Company recorded unrealized gains of $5 million, $7 million and $8 million, respectively, in accumulated other comprehensive income. There were no unrealized losses recorded in accumulated other comprehensive income on these investments as of December 31, 2013, September 30, 2013 and December 31, 2012. During the quarter ended December 31, 2013, the Company sold certain marketable common stock for approximately $3 million. As a result, the Company recorded a $1 million realized gain within selling, general and administrative expenses in the Automotive Experience Seating segment.
Equity swaps – The Company selectively uses equity swaps to reduce market risk associated with certain of its stock-based compensation plans, such as its deferred compensation plans. The equity swaps are valued under a market approach as the fair value of the swaps is equal to the Company’s stock price at the reporting period date. Changes in fair value on the equity swaps are reflected in the consolidated statements of income within selling, general and administrative expenses.
The fair values of cash and cash equivalents, accounts receivable, short-term debt and accounts payable approximate their carrying values. The fair value of long-term debt, which was $6.0 billion, $5.7 billion and $6.3 billion at December 31, 2013, September 30, 2013 and December 31, 2012, respectively, was determined primarily using market quotes classified as Level 1 inputs within the ASC 820 fair value hierarchy.

Segment_Information

Segment Information	3 Months Ended
	Dec. 31, 2013
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]	'
Segment Information	'
	Segment Information
	Effective October 1, 2013, the Company reorganized the reportable segments within its Building Efficiency business to align with its new management reporting structure and business activities. Prior to this reorganization, Building Efficiency was comprised of five reportable segments for financial reporting purposes: North America Systems, North America Service, Global Workplace Solutions, Asia and Other. As a result of this change, Building Efficiency is now comprised of four reportable segments for financial reporting purposes, with the only change being the combination of North America Systems and North America Service into one reportable segment called North America Systems and Service. Historical information has been revised to reflect the new Building Efficiency reportable segment structure.
	ASC 280, “Segment Reporting,” establishes the standards for reporting information about segments in financial statements. In applying the criteria set forth in ASC 280, the Company has determined that it has eight reportable segments for financial reporting purposes. The Company’s eight reportable segments are presented in the context of its three primary businesses – Building Efficiency, Automotive Experience and Power Solutions.
	Building Efficiency
	Building Efficiency designs, produces, markets and installs heating, ventilating and air conditioning (HVAC) and control systems that monitor, automate and integrate critical building segment equipment and conditions including HVAC, fire-safety and security in commercial buildings and in various industrial applications.
	•	North America Systems and Service provides HVAC and controls systems, energy efficient solutions and technical services, including inspection, scheduled maintenance, and repair and replacement of mechanical and control systems to non-residential buildings and industrial applications in the North American marketplace.
	•	Global Workplace Solutions provides on-site staff for complete real estate services, facility operation and management to improve the comfort, productivity, energy efficiency and cost effectiveness of building systems around the globe.
	•	Asia provides HVAC and refrigeration systems and technical services to the Asian marketplace.
	•	Other provides HVAC and refrigeration systems and technical services to markets in Europe, the Middle East and Latin America. Other also designs and produces heating and air conditioning solutions for residential and light commercial applications, and markets products to the replacement and new construction markets.
	Automotive Experience
	Automotive Experience designs and manufactures interior systems and products for passenger cars and light trucks, including vans, pick-up trucks and sport utility/crossover vehicles.
	•	Seating produces automotive seat metal structures and mechanisms, foam, trim, fabric and complete seat systems.
	•	Interiors produces instrument panels, floor consoles, door panels, headliners and overhead systems.
	•	Electronics produces information displays and body controllers, including electronic convenience features and clusters.
	Power Solutions
	Power Solutions services both automotive original equipment manufacturers and the battery aftermarket by providing advanced battery technology, coupled with systems engineering, marketing and service expertise.
	Management evaluates the performance of the segments based primarily on segment income, which represents income from continuing operations before income taxes and noncontrolling interests excluding net financing charges, significant restructuring and impairment costs, and net mark-to-market adjustments on pension and postretirement plans. General corporate and other overhead expenses are allocated to business segments in determining segment income. Financial information relating to the Company’s reportable segments is as follows (in millions):
		Net Sales
		Three Months Ended
		December 31,
		2013			2012
	Building Efficiency
	North America Systems and Service	$	991		$	988
	Global Workplace Solutions	1,077			1,134
	Asia	510			505
	Other	803			905
		3,381			3,532
	Automotive Experience
	Seating	4,279			3,889
	Interiors	1,142			1,012
	Electronics	334			313
		5,755			5,214
	Power Solutions	1,772			1,676
	Total net sales	$	10,908		$	10,422
		Segment Income
		Three Months Ended
		December 31,
		2013			2012
	Building Efficiency
	North America Systems and Service	$	67		$	68
	Global Workplace Solutions	18			35
	Asia	76			66
	Other	(15		)	3
		146			172
	Automotive Experience
	Seating	176			85
	Interiors	22			(10		)
	Electronics	34			26
		232			101
	Power Solutions	308			276
	Total segment income	$	686		$	549
	Net financing charges	(55		)	(61		)
	Income before income taxes	$	631		$	488

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	The Company accrues for potential environmental liabilities in a manner consistent with U.S. GAAP; that is, when it is probable a liability has been incurred and the amount of the liability is reasonably estimable. Reserves for environmental liabilities totaled $24 million, $25 million and $24 million at December 31, 2013, September 30, 2013 and December 31, 2012, respectively. The Company reviews the status of its environmental sites on a quarterly basis and adjusts its reserves accordingly. Such potential liabilities accrued by the Company do not take into consideration possible recoveries of future insurance proceeds. They do, however, take into account the likely share other parties will bear at remediation sites. It is difficult to estimate the Company’s ultimate level of liability at many remediation sites due to the large number of other parties that may be involved, the complexity of determining the relative liability among those parties, the uncertainty as to the nature and scope of the investigations and remediation to be conducted, the uncertainty in the application of law and risk assessment, the various choices and costs associated with diverse technologies that may be used in corrective actions at the sites and the often quite lengthy periods over which eventual remediation may occur. Nevertheless, the Company does not currently believe that any claims, penalties or costs in connection with known environmental matters will have a material adverse effect on the Company’s financial position, results of operations or cash flows. In addition, the Company has identified asset retirement obligations for environmental matters that are expected to be addressed at the retirement, disposal, removal or abandonment of existing owned facilities, primarily in the Power Solutions business. At December 31, 2013, September 30, 2013 and December 31, 2012, the Company recorded conditional asset retirement obligations of $59 million, $56 million and $81 million, respectively.
	The Company is involved in a number of product liability and various other casualty lawsuits incident to the operation of its businesses. The Company maintains insurance coverages and records estimated costs for claims and suits of this nature. It is management’s opinion that none of these will have a material adverse effect on the Company’s financial position, results of operations or cash flows. Costs related to such matters were not material to the periods presented.

Financial_Statements_Tables

Financial Statements (Tables)	3 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Carrying Amounts and Classification of Assets and Liabilities for Consolidated VIEs	'
	The carrying amounts and classification of assets (none of which are restricted) and liabilities included in the Company’s consolidated statements of financial position for the consolidated VIEs are as follows (in millions):
		December 31,		September 30,		December 31,
		2013		2013		2012
	Current assets	$	212	$	273	$	209
	Noncurrent assets	140		139		148
	Total assets	$	352	$	412	$	357
	Current liabilities	$	171	$	212	$	164
	Noncurrent liabilities	39		39		24
	Total liabilities	$	210	$	251	$	188

Assets_and_Liabilities_Held_fo1

Assets and Liabilities Held for Sale (Tables)	3 Months Ended
	Dec. 31, 2013
Assets and Liabilities Held for Sale [Abstract]	'
Schedule of Assets and Liabilities Held for Sale	'
	The following table summarizes the carrying value of the assets and liabilities held for sale (in millions):
		December 31,		September 30,
		2013		2013
	Cash and cash equivalents	$	5	$	4
	Accounts receivable - net	173		197
	Inventories	134		124
	Other current assets	62		91
	Property, plant and equipment - net	167		167
	Goodwill	74		74
	Other intangible assets - net	60		57
	Investments in partially-owned affiliates	31		26
	Other noncurrent assets	71		64
	Assets held for sale	$	777	$	804
	Short-term debt	$	7	$	5
	Accounts payable	227		253
	Accrued compensation and benefits	32		46
	Other current liabilities	41		84
	Pension and postretirement benefits	11		13
	Other noncurrent liabilities	3		1
	Liabilities held for sale	$	321	$	402

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories consisted of the following (in millions):
		December 31,		September 30,		December 31,
		2013		2013		2012
	Raw materials and supplies	$	1,112	$	1,086	$	1,120
	Work-in-process	402		459		435
	Finished goods	938		780		829
	Inventories	$	2,452	$	2,325	$	2,384

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Changes in Carrying Amount of Goodwill	'
	The changes in the carrying amount of goodwill in each of the Company’s reportable segments for the nine month period ended September 30, 2013 and the three month period ended December 31, 2013 were as follows (in millions):
		December 31,		Business Acquisitions			Business Divestitures			Impairments			Currency Translation and Other			September 30,
		2012														2013
	Building Efficiency
	North America Systems and Service	$	1,229	$	—		$	—		$	—		$	(1	)	$	1,228
	Global Workplace Solutions	187		79			—			—			(9		)	257
	Asia	390		—			—			—			(2		)	388
	Other	1,007		—			—			—			(4		)	1,003
	Automotive Experience
	Seating	2,495		187			(15		)	—			(8		)	2,659
	Interiors	409		—			—			(430		)	21			—
	Electronics	251		—			(251		)	—			—			—
	Power Solutions	1,048		—			—			—			6			1,054
	Total	$	7,016	$	266		$	(266	)	$	(430	)	$	3		$	6,589
		September 30,		Business Acquisitions			Business Divestitures			Impairments			Currency Translation and Other			December 31,
		2013														2013
	Building Efficiency
	North America Systems and Service	$	1,228	$	—		$	—		$	—		$	—		$	1,228
	Global Workplace Solutions	257		—			—			—			(1		)	256
	Asia	388		—			—			—			(1		)	387
	Other	1,003		—			—			—			1			1,004
	Automotive Experience
	Seating	2,659		2			—			—			17			2,678
	Interiors	—		—			—			—			—			—
	Electronics	—		—			—			—			—			—
	Power Solutions	1,054		102			—			—			8			1,164
	Total	$	6,589	$	104		$	—		$	—		$	24		$	6,717
Other Intangible Assets	'
	The Company’s other intangible assets, primarily from business acquisitions valued based on independent appraisals, consisted of (in millions):
		December 31, 2013								September 30, 2013								December 31, 2012
		Gross		Accumulated			Net			Gross			Accumulated			Net		Gross		Accumulated			Net
		Carrying		Amortization						Carrying			Amortization					Carrying		Amortization
		Amount								Amount								Amount
	Amortized intangible assets
	Patented technology	$	91	$	(52	)	$	39		$	92		$	(53	)	$	39	$	168	$	(97	)	$	71
	Customer relationships	609		(149		)	460			537			(138		)	399		520		(124		)	396
	Miscellaneous	353		(99		)	254			336			(91		)	245		325		(77		)	248
	Total amortized intangible assets	1,053		(300		)	753			965			(282		)	683		1,013		(298		)	715
	Unamortized intangible assets
	Trademarks	317		—			317			316			—			316		316		—			316
	Total intangible assets	$	1,370	$	(300	)	$	1,070		$	1,281		$	(282	)	$	999	$	1,329	$	(298	)	$	1,031

Product_Warranties_Tables

Product Warranties (Tables)	3 Months Ended
	Dec. 31, 2013
Product Warranties Disclosures [Abstract]	'
Changes in Carrying Amount of Product Warranty Liability	'
	The changes in the carrying amount of the Company’s total product warranty liability, including extended warranties for which deferred revenue is recorded, for the three months ended December 31, 2013 and 2012 were as follows (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Balance at beginning of period	$	256		$	278
	Accruals for warranties issued during the period	70			67
	Accruals related to pre-existing warranties (including changes in estimates)	1			(4		)
	Settlements made (in cash or in kind) during the period	(53		)	(66		)
	Balance at end of period	$	274		$	275

Significant_Restructuring_Cost1

Significant Restructuring Costs (Tables)	3 Months Ended
	Dec. 31, 2013
Restructuring Charges [Abstract]	'
Changes in Company's Restructuring Reserve	'
	The following table summarizes the changes in the Company’s restructuring reserve, included within other current liabilities in the consolidated statements of financial position (in millions):
		Employee Severance and Termination Benefits			Other		Currency		Total
							Translation
	Balance at September 30, 2013	$	441		$	3	$	2	$	446
	Utilized—cash	(62		)	—		—		(62		)
	Utilized—noncash	—			—		5		5
	Transfers from liabilities held for sale	31			—		—		31
	Balance at December 31, 2013	$	410		$	3	$	7	$	420

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Tax Jurisdictions and Years Currently under Audit Exam	'
	Additionally, the Company is currently under exam in the following major foreign jurisdictions:
	Tax Jurisdiction	Tax Years Covered
	Belgium	2011 - 2012
	Brazil	2004 - 2008
	Canada	2007 - 2010
	France	2002 - 2012
	Germany	2001 - 2010
	Italy	2005 - 2009
	Korea	2008 - 2012
	Mexico	2003 - 2004, 2007 - 2012

Pension_and_Postretirement_Pla1

Pension and Postretirement Plans (Tables)	3 Months Ended
	Dec. 31, 2013
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]	'
Components of Net Periodic Benefit Cost	'
	The components of the Company’s net periodic benefit costs associated with its defined benefit pension and postretirement plans are shown in the tables below in accordance with ASC 715, "Compensation – Retirement Benefits" (in millions):
		Pension Benefits
		U.S. Plans						Non-U.S. Plans
		Three Months Ended						Three Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
	Service cost	$	18		$	23		$	10		$	10
	Interest cost	34			38			18			16
	Expected return on plan assets	(51		)	(58		)	(19		)	(18		)
	Curtailment gain	—			—			—			(24		)
	Net periodic benefit cost (credit)	$	1		$	3		$	9		$	(16	)
		Postretirement Benefits
		Three Months Ended
		December 31,
		2013			2012
	Service cost	$	1		$	1
	Interest cost	3			3
	Expected return on plan assets	(3		)	(3		)
	Amortization of prior service credit	(2		)	(4		)
	Net periodic benefit credit	$	(1	)	$	(3	)

Debt_and_Financing_Arrangement1

Debt and Financing Arrangements (Tables)	3 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Components of Net Financing Charges	'
	The Company's net financing charges line item in the consolidated statements of income for the three month periods ended December 31, 2013 and 2012 contained the following components (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Interest expense, net of capitalized interest costs	$	57		$	60
	Banking fees and bond cost amortization	4			5
	Interest income	(3		)	(4		)
	Net foreign exchange results for financing activities	(3		)	—
	Net financing charges	$	55		$	61

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share (in millions):
		Three Months Ended
		December 31,
		2013		2012
	Income Available to Common Shareholders
	Basic and diluted income available to common shareholders	$	469	$	359
	Weighted Average Shares Outstanding
	Basic weighted average shares outstanding	674.1		683.1
	Effect of dilutive securities:
	Stock options and unvested restricted stock	8.1		3.6
	Diluted weighted average shares outstanding	682.2		686.7
	Antidilutive Securities
	Options to purchase common shares	0.2		2.7

Equity_and_Noncontrolling_Inte1

Equity and Noncontrolling Interests (Tables)	3 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Equity Attributable to Johnson Controls, Inc. and Noncontrolling Interests	'
	The following schedule presents changes in consolidated equity attributable to Johnson Controls, Inc. and noncontrolling interests (in millions):
		Three Months Ended December 31, 2013									Three Months Ended December 31, 2012
		Equity			Equity			Total Equity			Equity			Equity			Total Equity
		Attributable to			Attributable to						Attributable to			Attributable to
		Johnson			Noncontrolling						Johnson			Noncontrolling
		Controls, Inc.			Interests						Controls, Inc.			Interests
	Beginning balance, September 30	$	12,314		$	260		$	12,574		$	11,625		$	148		$	11,773
	Total comprehensive income:
	Net income	469			22			491			359			11			370
	Foreign currency translation adjustments	(14		)	—			(14		)	44			(1		)	43
	Realized and unrealized losses on derivatives	(1		)	—			(1		)	(1		)	—			(1		)
	Realized and unrealized gains (losses) on marketable common stock	(2		)	—			(2		)	3			—			3
	Pension and postretirement plans	(1		)	—			(1		)	(9		)	—			(9		)
	Other comprehensive income (loss)	(18		)	—			(18		)	37			(1		)	36
	Comprehensive income	451			22			473			396			10			406
	Other changes in equity:
	Cash dividends — common stock	(147		)	—			(147		)	(130		)	—			(130		)
	Dividends attributable to noncontrolling interests	—			(21		)	(21		)	—			(3		)	(3		)
	Redemption value adjustment attributable to redeemable noncontrolling interests	—			—			—			2			—			2
	Repurchases of common stock	(1,199		)	—			(1,199		)	—			—			—
	Other, including options exercised	112			—			112			40			—			40
	Ending balance, December 31	$	11,531		$	261		$	11,792		$	11,933		$	155		$	12,088
Changes in Redeemable Noncontrolling Interests	'
	The following schedule presents changes in the redeemable noncontrolling interests (in millions):
		Three Months Ended
		December 31,
		2013			2012
	Beginning balance, September 30	$	157		$	253
	Net income	14			19
	Dividends	(2		)	—
	Redemption value adjustment	—			(2		)
	Ending balance, December 31	$	169		$	270
Changes in Accumulated Other Comprehensive Income, Net of Tax	'
	The following schedule presents changes in accumulated other comprehensive income (AOCI) attributable to Johnson Controls, Inc. (in millions, net of tax):
		Three Months Ended
		December 31,
		2013			2012
	Foreign currency translation adjustments
	Balance at beginning of period	$	392		$	413
	Aggregate adjustment for the period (net of tax effect of $6 and $6)	(14		)	44
	Balance at end of period	378			457
	Realized and unrealized gains (losses) on derivatives
	Balance at beginning of period	7			12
	Current period changes in fair value (net of tax effect of $0 and $1)	—			3
	Reclassification to income (net of tax effect of $0 and $(2)) *	(1		)	(4		)
	Balance at end of period	6			11
	Realized and unrealized gains (losses) on marketable common stock
	Balance at beginning of period	7			5
	Current period changes in fair value (net of tax effect of $0)	(1		)	3
	Reclassification to income (net of tax effect of $0) **	(1		)	—
	Balance at end of period	5			8
	Pension and postretirement plans
	Balance at beginning of period	12			28
	Reclassification to income (net of tax effect of $(1) and $(4)) ***	(1		)	(9		)
	Balance at end of period	11			19
	Accumulated other comprehensive income, end of period	$	400		$	495
	* Refer to Note 15, "Derivative Instruments and Hedging Activities," of the notes to consolidated financial statements for disclosure of the line items on the consolidated statements of income affected by reclassifications from AOCI into income related to derivatives.
	** Refer to Note 16, "Fair Value Measurements," of the notes to consolidated financial statements for disclosure of the line item on the consolidated statements of income affected by reclassifications from AOCI into income related to marketable common stock.
	*** Refer to Note 11, "Pension and Postretirement Plans," of the notes to consolidated financial statements for disclosure of the components of the Company's net periodic benefit costs associated with its defined benefit pension and postretirement plans. For the three months ended December 31, 2013, the amount reclassified from AOCI into income for pension and postretirement plans was primarily recorded in cost of sales on the consolidated statement of income. For the three months ended December 31, 2012, the amount reclassified from AOCI into income was split approximately evenly between cost of sales and selling, general and administrative expenses on the consolidated statement of income.

Derivative_Instruments_and_Hed1

Derivative Instruments and Hedging Activities (Tables)	3 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Outstanding Commodity Hedge Contracts	'
	The Company had the following outstanding commodity hedge contracts that hedge forecasted purchases:
					Volume Outstanding as of
	Commodity		Units		December 31, 2013			September 30, 2013			December 31, 2012
	Copper		Pounds		12,070,000			14,705,000			11,960,000
	Lead		Metric Tons		7,500			23,900			23,700
	Aluminum		Metric Tons		1,693			2,709			2,084
	Tin		Metric Tons		1,504			2,052			1,008
Location and Fair Values of Derivative Instruments and Hedging Activities	'
	The following table presents the location and fair values of derivative instruments and hedging activities included in the Company’s consolidated statements of financial position (in millions):
		Derivatives and Hedging Activities Designated as												Derivatives and Hedging Activities Not Designated as Hedging Instruments under ASC 815
		Hedging Instruments under ASC 815
		December 31,				30-Sep-13				December 31,				December 31,			30-Sep-13			December 31,
		2013								2012				2013						2012
	Other current assets
	Foreign currency exchange derivatives	$	21			$	19			$	10			$	14		$	14		$	4
	Commodity derivatives	5				8				8				—			—			—
	Interest rate swaps	1				2				2				—			—			—
	Cross-currency interest rate swaps	19				7				21				—			—			—
	Other noncurrent assets
	Interest rate swaps	4				3				5				—			—			—
	Equity swap	—				—				—				236			183			138
	Total assets	$	50			$	39			$	46			$	250		$	197		$	142
	Other current liabilities
	Foreign currency exchange derivatives	$	24			$	21			$	12			$	12		$	11		$	5
	Commodity derivatives	1				3				—				—			—			—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	451				452				301				—			—			—
	Long-term debt
	Fixed rate debt swapped to floating	928				927				455				—			—			—
	Total liabilities	$	1,404			$	1,403			$	768			$	12		$	11		$	5
Offsetting Derivative Assets and Liabilities	'
	The gross and net amounts of derivative assets and liabilities were as follows (in millions):
		Fair Value of Assets												Fair Value of Liabilities
		December 31,				30-Sep-13				December 31,				December 31,			30-Sep-13			December 31,
		2013								2012				2013						2012
	Gross amount recognized	$	300			$	236			$	188			$	1,416		$	1,414		$	773
	Gross amount eligible for offsetting	(9		)		(9		)		(7		)		(9		)	(9		)	(7		)
	Net amount	$	291			$	227			$	181			$	1,407		$	1,405		$	766
Location and Amount of Gains and Losses Gross of Tax on Derivative Instruments and Related Hedge Items	'
	The following tables present the location and amount of the effective portion of gains and losses gross of tax on derivative instruments and related hedge items reclassified from AOCI into the Company’s consolidated statements of income for the three months ended December 31, 2013 and 2012 and amounts recorded in AOCI net of tax in the consolidated statements of financial position (in millions):
					Amount of Gain (Loss) Reclassified from AOCI into Income
	Derivatives in ASC 815 Cash Flow Hedging Relationships		Location of Gain (Loss) Reclassified from AOCI into Income		Three Months Ended December 31,
					2013				2012
	Foreign currency exchange derivatives		Cost of sales		$	2			$	1
	Commodity derivatives		Cost of sales		(1		)		5
	Total				$	1			$	6
	Derivatives in ASC 815 Cash Flow Hedging Relationships		Amount of Gain (Loss) Recognized in AOCI on Derivative
			December 31, 2013				September 30, 2013				December 31, 2012
	Foreign currency exchange derivatives		$	(4	)		$	(3	)		$	(2	)
	Commodity derivatives		3				3				5
	Forward treasury locks		7				7				8
	Total		$	6			$	7			$	11
					Amount of Gain (Loss) Recognized in Income on Derivative
	Derivatives in ASC 815 Fair Value Hedging Relationships		Location of Gain (Loss) Recognized in Income on Derivative		Three Months Ended December 31,
					2013				2012
	Interest rate swaps		Net financing charges		$	—			$	(1	)
	Fixed rate debt swapped to floating		Net financing charges		—				1
	Total				$	—			$	—
					Amount of Gain (Loss) Recognized in Income on Derivative
	Derivatives Not Designated as Hedging Instruments under ASC 815		Location of Gain (Loss) Recognized in Income on Derivative		Three Months Ended December 31,
					2013				2012
	Foreign currency exchange derivatives		Cost of sales		$	(1	)		$	—
	Foreign currency exchange derivatives		Net financing charges		3				(1		)
	Foreign currency exchange derivatives		Provision for income taxes		—				4
	Equity swap		Selling, general and administrative		44				15
	Total				$	46			$	18

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Assets and Liabilities Measured at Fair Value	'
	The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value as of December 31, 2013, September 30, 2013 and December 31, 2012 (in millions):
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		31-Dec-13		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
	Foreign currency exchange derivatives	$	35	$	—	$	35	$	—
	Commodity derivatives	5		—		5		—
	Interest rate swaps	1		—		1		—
	Cross-currency interest rate swap	19		—		19		—
	Other noncurrent assets
	Interest rate swaps	4		—		4		—
	Investments in marketable common stock	25		25		—		—
	Equity swap	236		236		—		—
	Total assets	$	325	$	261	$	64	$	—
	Other current liabilities
	Foreign currency exchange derivatives	$	36	$	—	$	36	$	—
	Commodity derivatives	1		—		1		—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	451		—		451		—
	Long-term debt
	Fixed rate debt swapped to floating	928		—		928		—
	Total liabilities	$	1,416	$	—	$	1,416	$	—
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		30-Sep-13		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
	Foreign currency exchange derivatives	$	33	$	—	$	33	$	—
	Commodity derivatives	8		—		8		—
	Interest rate swaps	2		—		2		—
	Cross-currency interest rate swaps	7		—		7		—
	Other noncurrent assets
	Interest rate swaps	3		—		3		—
	Investments in marketable common stock	30		30		—		—
	Equity swap	183		183		—		—
	Total assets	$	266	$	213	$	53	$	—
	Other current liabilities
	Foreign currency exchange derivatives	$	32	$	—	$	32	$	—
	Commodity derivatives	3		—		3		—
	Current portion of long-term debt
	Fixed rate debt swapped to floating	452		—		452		—
	Long-term debt
	Fixed rate debt swapped to floating	927		—		927		—
	Total liabilities	$	1,414	$	—	$	1,414	$	—
		Fair Value Measurements Using:
		Total as of		Quoted Prices		Significant		Significant
		31-Dec-12		in Active		Other		Unobservable
				Markets		Observable		Inputs
				(Level 1)		Inputs		(Level 3)
						(Level 2)
	Other current assets
	Foreign currency exchange derivatives	$	14	$	—	$	14	$	—
	Commodity derivatives	8		—		8		—
	Interest rate swaps	2		—		2		—
	Cross-currency interest rate swaps	21		—		21		—
	Other noncurrent assets
	Interest rate swaps	5		—		5		—
	Investments in marketable common stock	32		32		—		—
Equity swap	138		138		—		—
Total assets	$	220	$	170	$	50	$	—
Other current liabilities
Foreign currency exchange derivatives	$	17	$	—	$	17	$	—
Current portion of long-term debt
Fixed rate debt swapped to floating	301		—		301		—
Long-term debt
Fixed rate debt swapped to floating	455		—		455		—
Total liabilities	$	773	$	—	$	773	$	—

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Dec. 31, 2013
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]	'
Financial Information Related to Company's Reportable Segments	'
	Financial information relating to the Company’s reportable segments is as follows (in millions):
		Net Sales
		Three Months Ended
		December 31,
		2013			2012
	Building Efficiency
	North America Systems and Service	$	991		$	988
	Global Workplace Solutions	1,077			1,134
	Asia	510			505
	Other	803			905
		3,381			3,532
	Automotive Experience
	Seating	4,279			3,889
	Interiors	1,142			1,012
	Electronics	334			313
		5,755			5,214
	Power Solutions	1,772			1,676
	Total net sales	$	10,908		$	10,422
		Segment Income
		Three Months Ended
		December 31,
		2013			2012
	Building Efficiency
	North America Systems and Service	$	67		$	68
	Global Workplace Solutions	18			35
	Asia	76			66
	Other	(15		)	3
		146			172
	Automotive Experience
	Seating	176			85
	Interiors	22			(10		)
	Electronics	34			26
		232			101
	Power Solutions	308			276
	Total segment income	$	686		$	549
	Net financing charges	(55		)	(61		)
	Income before income taxes	$	631		$	488

Financial_Statements_Additiona

Financial Statements - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
	Segment	Entity	Entity	Entity
	Entity			InterestInvestment
Financial Statement Details [Line Items]	'	'	'	'
Interest percentage minimum for investments in partially-owned affiliates to be accounted for by the equity method	20.00%	'	'	'
Number of VIEs in which Company was primary beneficiary	3	3	3	'
Number of separate investments a pre-existing VIE was reorganized into	'	'	'	3
Additional interests acquired	'	'	'	2
Third party debt agreement	$175	'	'	'
Loans to partially-owned affiliates	55	'	'	'
Floor guarantee	25	'	'	'
Interest percentage acquired in equity method investee	'	40.00%	40.00%	'
Remaining equity interest percentage that may be acquired in equity method investee	'	60.00%	60.00%	'
Number of months after the fifth anniversary of the closing date that the Company is subject to a contractual obligation at the counterparty's option to sell the Company's equity investment in the investee to the counterparty	'	'6 months	'6 months	'
Restricted cash and cash equivalents	24	32	21	'
Percentage of interest acquired	50.00%	'	'	'
Total ownership percentage	90.00%	'	'	'
Number of VIEs in which Company was not primary beneficiary	'	'	'	2
Number of reportable segments	8	'	'	'
Number of inventory costing methods	'	2	'	'
Net income attributable to Johnson Controls, Inc.	469	'	359	'
Diluted	$0.69	'	$0.52	'
Common stock, par value	$1	$1	$1	'
Nonconsolidated VIEs 2	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Investment balance of the Company's nonconsolidated VIEs	'	56	54	'
Nonconsolidated VIEs 1	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Investment balance of the Company's nonconsolidated VIEs	57	57	54	'
Effect of Change	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Net income attributable to Johnson Controls, Inc.	'	'	$5	'
Diluted	'	'	$0	'
Building Efficiency | Prior to Reorganization	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Number of reportable segments	5	'	'	'
Building Efficiency | After Reorganization	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Number of reportable segments	4	'	'	'
Power Solutions	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Number of VIEs in which Company was primary beneficiary	1	'	'	'
North America [Member] | Automotive Experience	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Number of VIEs in which Company was primary beneficiary	2	'	'	'
North America Systems and Service | After Combination	'	'	'	'
Financial Statement Details [Line Items]	'	'	'	'
Number of reportable segments	1	'	'	'

Financial_Statements_Carrying_

Financial Statements - Carrying Amounts and Classification of Assets and Liabilities for Consolidated VIEs (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'
Current assets	$212	$273	$209
Noncurrent assets	140	139	148
Total assets	352	412	357
Current liabilities	171	212	164
Noncurrent liabilities	39	39	24
Total liabilities	$210	$251	$188

Acquisitions_and_Divestitures_

Acquisitions and Divestitures - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
	Acquisition	Divestiture
	Divestiture	Acquisition
Acquisitions And Discontinued Operations [Line Items]	'	'	'
Number of acquisitions	2	0	'
Acquisition of businesses, net of cash acquired	$128	$0	'
Goodwill recorded in connection with business acquisitions	104	'	266
Number of acquisitions which increased Company's ownership from noncontrolling to controlling interest	1	'	'
Aggregate non-cash gain recorded due to acquisition	19	0	'
Number of divestitures	1	0	'
Goodwill adjustment	2	'	'
Sales price of divestiture	13	0	'
Gain on sale of business	9	'	'
Reduction in goodwill related to business divestitures	0	'	266
2014 Acquisitions [Member]	'	'	'
Acquisitions And Discontinued Operations [Line Items]	'	'	'
Goodwill recorded in connection with business acquisitions	102	'	'
Power Solutions	'	'	'
Acquisitions And Discontinued Operations [Line Items]	'	'	'
Goodwill recorded in connection with business acquisitions	102	'	0
Reduction in goodwill related to business divestitures	$0	'	$0

Assets_and_Liabilities_Held_fo2

Assets and Liabilities Held for Sale Assets and Liabilities Held for Sale (Details) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets and Liabilities Held for Sale [Abstract]	'	'	'
Cash and cash equivalents	$5	$4	'
Accounts receivable - net	173	197	'
Inventories	134	124	'
Other current assets	62	91	'
Property, plant and equipment - net	167	167	'
Goodwill	74	74	'
Other intangible assets - net	60	57	'
Investments in partially-owned affiliates	31	26	'
Other noncurrent assets	71	64	'
Assets held for sale	777	804	0
Short-term debt	7	5	'
Accounts payable	227	253	'
Accrued compensation and benefits	32	46	'
Other current liabilities	41	84	'
Pension and postretirement benefits	11	13	'
Other noncurrent liabilities	3	1	'
Liabilities held for sale	$321	$402	$0

Assets_and_Liabilities_Held_fo3

Assets and Liabilities Held for Sale Assets and Liabilities Held for Sale - Additional Information (Details) (USD $)	3 Months Ended
	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2013
	Assets Held-for-sale [Member]	Minimum	Maximum
	Interiors
	Automotive Experience
Assets and Liabilities Held for Sale [Line Items]	'	'	'
Tangible asset impairment charges	$41,000,000	'	'
Long-lived asset balance after impairment	0	'	'
Expected loss on sale of business	'	$75,000,000	$85,000,000

PercentageofCompletion_Contrac1

Percentage-of-Completion Contracts - Additional Information (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Disclosure Percentage Of Completion Contracts Additional Information [Abstract]	'	'	'
Costs and earnings in excess of billings related to contracts	$488	$489	$473
Billing in excess of costs and earnings on uncompleted contracts	$284	$263	$296

Inventories_Schedule_of_Invent

Inventories - Schedule of Inventories (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'	'
Raw materials and supplies	$1,112	$1,086	$1,120
Work-in-process	402	459	435
Finished goods	938	780	829
Inventories	$2,452	$2,325	$2,384

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	$6,589	$7,016
Business Acquisitions	104	266
Business Divestitures	0	-266
Impairments	0	-430
Currency Translation and Other	24	3
Goodwill, Ending Balance	6,717	6,589
Building Efficiency | North America Systems and Service	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	1,228	1,229
Business Acquisitions	0	0
Business Divestitures	0	0
Impairments	0	0
Currency Translation and Other	0	-1
Goodwill, Ending Balance	1,228	1,228
Building Efficiency | Building Efficiency Other	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	1,003	1,007
Business Acquisitions	0	0
Business Divestitures	0	0
Impairments	0	0
Currency Translation and Other	1	-4
Goodwill, Ending Balance	1,004	1,003
Building Efficiency | Building Efficiency Asia	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	388	390
Business Acquisitions	0	0
Business Divestitures	0	0
Impairments	0	0
Currency Translation and Other	-1	-2
Goodwill, Ending Balance	387	388
Building Efficiency | Global Workplace Solutions	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	257	187
Business Acquisitions	0	79
Business Divestitures	0	0
Impairments	0	0
Currency Translation and Other	-1	-9
Goodwill, Ending Balance	256	257
Automotive Experience | Electronics	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	0	251
Business Acquisitions	0	0
Business Divestitures	0	-251
Impairments	0	0
Currency Translation and Other	0	0
Goodwill, Ending Balance	0	0
Automotive Experience | Interiors	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	0	409
Business Acquisitions	0	0
Business Divestitures	0	0
Impairments	0	-430
Currency Translation and Other	0	21
Goodwill, Ending Balance	0	0
Automotive Experience | Seating	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	2,659	2,495
Business Acquisitions	2	187
Business Divestitures	0	-15
Impairments	0	0
Currency Translation and Other	17	-8
Goodwill, Ending Balance	2,678	2,659
Power Solutions	'	'
Goodwill [Roll Forward]	'	'
Goodwill, Beginning Balance	1,054	1,048
Business Acquisitions	102	0
Business Divestitures	0	0
Impairments	0	0
Currency Translation and Other	8	6
Goodwill, Ending Balance	$1,164	$1,054

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount, Total Amortized Intangible Assets	$1,053	$965	$1,013
Gross Carrying Amount, Total Intangible Assets	1,370	1,281	1,329
Accumulated Amortization	-300	-282	-298
Net, Total Amortized Intangible Assets	753	683	715
Net, Total Intangible Assets	1,070	999	1,031
Trademarks	'	'	'
Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount and Net	317	316	316
Patented Technology	'	'	'
Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount, Total Amortized Intangible Assets	91	92	168
Accumulated Amortization	-52	-53	-97
Net, Total Amortized Intangible Assets	39	39	71
Customer Relationships	'	'	'
Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount, Total Amortized Intangible Assets	609	537	520
Accumulated Amortization	-149	-138	-124
Net, Total Amortized Intangible Assets	460	399	396
Miscellaneous	'	'	'
Intangible Assets [Line Items]	'	'	'
Gross Carrying Amount, Total Amortized Intangible Assets	353	336	325
Accumulated Amortization	-99	-91	-77
Net, Total Amortized Intangible Assets	$254	$245	$248

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'
Goodwill held for sale	$74	'	$74
Amortization of other intangible assets	20	18	'
Future amortization expense, 2015	82	'	'
Future amortization expense, 2016	76	'	'
Future amortization expense, 2017	71	'	'
Future amortization expense, 2018	64	'	'
Future amortization expense, 2019	$55	'	'

Product_Warranties_Additional_

Product Warranties - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2013
Product Warranties Disclosures [Abstract]	'
Maximum length, in years, of a product warranty for it to be recorded in other current liabilities	'1 year
Minimum length, in years, of a product warranty for it to be recorded in other noncurrent liabilities	'1 year

Product_Warranties_Changes_in_

Product Warranties - Changes in Carrying Amount of Product Warranty liability (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]	'	'
Balance at beginning of period	$256	$278
Accruals for warranties issued during the period	70	67
Accruals related to pre-existing warranties (including changes in estimates)	1	-4
Settlements made (in cash or in kind) during the period	-53	-66
Balance at end of period	$274	$275

Significant_Restructuring_Cost2

Significant Restructuring Costs - Additional Information (Detail) (USD $)	3 Months Ended						12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	Employees
	Plant
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'	'
Restructuring and impairment costs	'	$758	$143	$84	$245	$52	$985	$297
Number of employees to be severed	16,700	'	'	'	'	'	'	'
Number of employees severed	9,100	'	'	'	'	'	'	'
Plants to be closed	21	'	'	'	'	'	'	'
Plants closed	10	'	'	'	'	'	'	'
Automotive Experience	'	'	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'	'
Number of employees to be severed	9,500	'	'	'	'	'	'	'
Plants to be closed	17	'	'	'	'	'	'	'
Power Solutions	'	'	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'	'
Number of employees to be severed	1,000	'	'	'	'	'	'	'
Plants to be closed	2	'	'	'	'	'	'	'
Building Efficiency	'	'	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'	'
Number of employees to be severed	6,200	'	'	'	'	'	'	'
Plants to be closed	2	'	'	'	'	'	'	'

Significant_Restructuring_Cost3

Significant Restructuring Costs - Changes in Company's Restructuring Reserve (Detail) (USD $)	3 Months Ended						12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Restructuring Reserve [Roll Forward]	'	'	'	'	'	'	'	'
Restructuring reserve, beginning balance	$446	'	'	'	'	'	'	'
Restructuring and impairment costs	'	758	143	84	245	52	985	297
Utilized-cash	-62	'	'	'	'	'	'	'
Utilized-noncash	5	'	'	'	'	'	'	'
Restructuring reserve transfers from liabilities held for sale	31	'	'	'	'	'	'	'
Restructuring reserve, ending balance	420	446	'	'	'	'	446	'
Employee Severance and Termination Benefits	'	'	'	'	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'	'	'	'	'
Restructuring reserve, beginning balance	441	'	'	'	'	'	'	'
Utilized-cash	-62	'	'	'	'	'	'	'
Utilized-noncash	0	'	'	'	'	'	'	'
Restructuring reserve transfers from liabilities held for sale	31	'	'	'	'	'	'	'
Restructuring reserve, ending balance	410	'	'	'	'	'	'	'
Other	'	'	'	'	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'	'	'	'	'
Restructuring reserve, beginning balance	3	'	'	'	'	'	'	'
Utilized-cash	0	'	'	'	'	'	'	'
Utilized-noncash	0	'	'	'	'	'	'	'
Restructuring reserve transfers from liabilities held for sale	0	'	'	'	'	'	'	'
Restructuring reserve, ending balance	3	'	'	'	'	'	'	'
Currency Translation	'	'	'	'	'	'	'	'
Restructuring Reserve [Roll Forward]	'	'	'	'	'	'	'	'
Restructuring reserve, beginning balance	2	'	'	'	'	'	'	'
Utilized-cash	0	'	'	'	'	'	'	'
Utilized-noncash	5	'	'	'	'	'	'	'
Restructuring reserve transfers from liabilities held for sale	0	'	'	'	'	'	'	'
Restructuring reserve, ending balance	$7	'	'	'	'	'	'	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Income Tax Examination [Line Items]	'	'	'
Effective income tax rate	20.00%	20.00%	'
Mexican tax law benefit	$25	'	'
U.S. federal statutory income tax rate	35.00%	35.00%	'
Valuation allowance adjustment	21	'	'
Gross tax effected unrecognized tax benefits	'	'	1,345
Amount of unrecognized tax benefits which may impact effective tax rate	'	'	1,198
Total net accrued interest, net of tax benefit	'	'	$84
Number of months estimated for conclusion period for tax examinations, appellate proceedings and/or tax litigation	'12 months	'	'
IRS Exam Minimum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Tax jurisdictions and years currently under audit exam	'2010	'	'
IRS Exam Maximum [Member]	'	'	'
Income Tax Examination [Line Items]	'	'	'
Tax jurisdictions and years currently under audit exam	'2012	'	'
IRS Appeals Minimum	'	'	'
Income Tax Examination [Line Items]	'	'	'
Tax jurisdictions and years currently under audit exam	'2004	'	'
IRS Appeals Maximum	'	'	'
Income Tax Examination [Line Items]	'	'	'
Tax jurisdictions and years currently under audit exam	'2009	'	'

Income_Taxes_Tax_Jurisdictions

Income Taxes - Tax Jurisdictions and Years Currently under Audit Exam (Detail)	3 Months Ended
	Dec. 31, 2013
Minimum | Belgium	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2011
Minimum | Brazil	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2004
Minimum | Canada	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2007
Minimum | France	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2002
Minimum | Germany	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2001
Minimum | Italy	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2005
Minimum | Korea	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2008
Maximum | Belgium	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2012
Maximum | Brazil	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2008
Maximum | Canada	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2010
Maximum | France	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2012
Maximum | Germany	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2010
Maximum | Italy	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2009
Maximum | Korea	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2012
Examination Period One Minimum | Mexico	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2003
Examination Period One Maximum | Mexico	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2004
Examination Period Two Minimum | Mexico	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2007
Examination Period Two Maximum | Mexico	'
Income Tax Examination [Line Items]	'
Tax jurisdictions and years currently under audit exam	'2012

Pension_and_Postretirement_Pla2

Pension and Postretirement Plans - Components of Net Periodic Benefit Cost (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'
Net periodic benefit cost (credit)	$9	($16)
U.S. Pension Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	18	23
Interest cost	34	38
Expected return on plan assets	-51	-58
Curtailment gain	0	0
Net periodic benefit cost (credit)	1	3
Non-U.S. Pension	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	10	10
Interest cost	18	16
Expected return on plan assets	-19	-18
Curtailment gain	0	-24
Net periodic benefit cost (credit)	9	-16
Postretirement Benefits	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	1	1
Interest cost	3	3
Expected return on plan assets	-3	-3
Amortization of prior service cost (credit)	-2	-4
Net periodic benefit cost (credit)	($1)	($3)

Debt_and_Financing_Arrangement2

Debt and Financing Arrangements - Components of Net Financing Charges (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]	'	'
Interest expense, net of capitalized interest costs	$57	$60
Banking fees and bond cost amortization	4	5
Interest income	-3	-4
Net foreign exchange results for financing activities	-3	0
Net financing charges	$55	$61

Debt_and_Financing_Arrangement3

Debt and Financing Arrangements - Additional Information (Detail)	3 Months Ended							3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
	Floating Rate Credit Facility	Floating Rate Credit Facility	Floating Rate Term Loan	Revolving Credit Facility Expired in November 2013	Revolving Credit Facility Expired in December 2013	Committed Revolving Credit Facility Expiring in November 2014	Committed Revolving Credit Facility Expiring in December 2014	Senior Unsecured Fixed Rate Notes Due 2012
	EUR (€)	EUR (€)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Amount of credit facility expired	'	'	'	$35,000,000	$100,000,000	'	'	'
Total credit facility available	220,000,000	70,000,000	500,000,000	'	'	35,000,000	100,000,000	'
Length of credit facility, months	'	'	'9 months	'	'	'	'	'
Length of credit facility, years	'5 years	'5 years	'	'	'	'	'	'
Debt retired, amount	'	'	'	'	'	'	'	$100,000,000
Interest rate on notes	'	'	'	'	'	'	'	5.80%

Earnings_Per_Share_Earnings_Pe

Earnings Per Share - Earnings Per Share (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]	'	'
Basic and diluted income available to common shareholders	$469	$359
Weighted Average Shares Outstanding	'	'
Basic weighted average shares outstanding	674.1	683.1
Effect of dilutive securities:	'	'
Stock options and unvested restricted stock	8.1	3.6
Diluted weighted average shares outstanding	682.2	686.7
Antidilutive Securities	'	'
Options to purchase common shares	0.2	2.7

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]	'	'
Dividend declared	$0.22	$0.19

Equity_and_Noncontrolling_Inte2

Equity and Noncontrolling Interests - Equity Attributable to Johnson Controls, Inc. and Noncontrolling Interests (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Beginning balance	$12,314	'
Beginning balance	260	'
Beginning balance	12,574	'
Net income attributable to Johnson Controls, Inc.	469	359
Income attributable to noncontrolling interests	36	30
Foreign currency translation adjustments	-14	43
Realized and unrealized losses on derivatives	-1	-1
Realized and unrealized gains (losses) on marketable common stock	-2	3
Pension and postretirement plans	-1	-9
Other comprehensive income (loss)	-18	36
Comprehensive income attributable to Johnson Controls, Inc.	451	396
Comprehensive income attributable to noncontrolling interests	36	29
Total comprehensive income	487	425
Ending balance	11,531	11,933
Ending balance	261	155
Ending balance	11,792	12,088
Equity Attributable to Johnson Controls, Inc	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Beginning balance	12,314	11,625
Net income attributable to Johnson Controls, Inc.	469	359
Foreign currency translation adjustments	-14	44
Realized and unrealized losses on derivatives	-1	-1
Realized and unrealized gains (losses) on marketable common stock	-2	3
Pension and postretirement plans	-1	-9
Other comprehensive income (loss)	-18	37
Comprehensive income attributable to Johnson Controls, Inc.	451	396
Cash dividends - common stock	-147	-130
Dividends attributable to noncontrolling interests	0	0
Redemption value adjustment attributable to redeemable noncontrolling interests	0	2
Repurchases of common stock	-1,199	0
Other, including options exercised	112	40
Ending balance	11,531	11,933
Nonredeemable Noncontrolling Interest	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Beginning balance	260	148
Income attributable to noncontrolling interests	22	11
Foreign currency translation adjustments	0	-1
Realized and unrealized losses on derivatives	0	0
Realized and unrealized gains (losses) on marketable common stock	0	0
Pension and postretirement plans	0	0
Other comprehensive income (loss)	0	-1
Comprehensive income attributable to noncontrolling interests	22	10
Cash dividends - common stock	0	0
Dividends attributable to noncontrolling interests	-21	-3
Redemption value adjustment attributable to redeemable noncontrolling interests	0	0
Repurchases of common stock	0	0
Other, including options exercised	0	0
Ending balance	261	155
Total Equity Excluding Redeemable Noncontrolling Interest	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Beginning balance	12,574	11,773
Net income	491	370
Foreign currency translation adjustments	-14	43
Realized and unrealized losses on derivatives	-1	-1
Realized and unrealized gains (losses) on marketable common stock	-2	3
Pension and postretirement plans	-1	-9
Other comprehensive income (loss)	-18	36
Total comprehensive income	473	406
Cash dividends - common stock	-147	-130
Dividends attributable to noncontrolling interests	-21	-3
Redemption value adjustment attributable to redeemable noncontrolling interests	0	2
Repurchases of common stock	-1,199	0
Other, including options exercised	112	40
Ending balance	$11,792	$12,088

Equity_and_Noncontrolling_Inte3

Equity and Noncontrolling Interests Equity and Noncontrolling Interest - Additional Information (Details) (USD $)	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Equity, Class of Treasury Stock [Line Items]	'	'
Stock repurchases	$1,199,000,000	$0
Accelerated share repurchases	800,000,000	'
Authorization in November 2013 [Member]	'	'
Equity, Class of Treasury Stock [Line Items]	'	'
Stock repurchase program, authorized amount	3,000,000,000	'
Total Authorizations [Member]	'	'
Equity, Class of Treasury Stock [Line Items]	'	'
Stock repurchase program, authorized amount	$3,650,000,000	'

Equity_and_Noncontrolling_Inte4

Equity and Noncontrolling Interests - Changes in Redeemable Noncontrolling Interests (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified				Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]	'	'	'	'	'
Beginning balance	$169	$157	$270	$157	$253
Net income	'	'	'	14	19
Dividends	'	'	'	-2	0
Redemption value adjustment	'	'	'	0	-2
Ending balance	$169	$157	$270	$169	$270

Equity_and_Noncontrolling_Inte5

Equity and Noncontrolling Interests - Changes in Accumulated Other Comprehensive Income, Net of Tax (Detail) (USD $)	3 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Sep. 30, 2013
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'		'		'
Current period changes in fair value	($1,000,000)		($1,000,000)		'
Accumulated other comprehensive income, end of period	400,000,000		495,000,000		418,000,000
Foreign Currency Translation Adjustments	'		'		'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'		'		'
Balance at beginning of period	392,000,000		413,000,000		'
Aggregate adjustment for the period	-14,000,000		44,000,000		'
Balance at end of period	378,000,000		457,000,000		'
Realized and Unrealized Gains (Losses) on Derivatives	'		'		'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'		'		'
Balance at beginning of period	7,000,000		12,000,000		'
Current period changes in fair value	0		3,000,000		'
Reclassification to income	-1,000,000	[1]	-4,000,000	[1]	'
Balance at end of period	6,000,000		11,000,000		'
Realized and Unrealized Gains (Losses) on Marketable Common Stock	'		'		'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'		'		'
Balance at beginning of period	7,000,000		5,000,000		'
Current period changes in fair value	-1,000,000		3,000,000		'
Reclassifications to income	-1,000,000	[2]	0	[2]	'
Balance at end of period	5,000,000		8,000,000		'
Pension And Postretirement Plans	'		'		'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'		'		'
Balance at beginning of period	12,000,000		28,000,000		'
Reclassification to income	-1,000,000	[3]	-9,000,000	[3]	'
Balance at end of period	$11,000,000		$19,000,000		'
[1]	Refer to Note 15, "Derivative Instruments and Hedging Activities," of the notes to consolidated financial statements for disclosure of the line items on the consolidated statements of income affected by reclassifications from AOCI into income related to derivatives
[2]	Refer to Note 16, "Fair Value Measurements," of the notes to consolidated financial statements for disclosure of the line item on the consolidated statements of income affected by reclassifications from AOCI into income related to marketable common stock.
[3]	Refer to Note 11, "Pension and Postretirement Plans," of the notes to consolidated financial statements for disclosure of the components of the Company's net periodic benefit costs associated with its defined benefit pension and postretirement plans. For the three months ended December 31, 2013, the amount reclassified from AOCI into income for pension and postretirement plans was primarily recorded in cost of sales on the consolidated statement of income. For the three months ended December 31, 2012, the amount reclassified from AOCI into income was split approximately evenly between cost of sales and selling, general and administrative expenses on the consolidated statement of income.

Equity_and_Noncontrolling_Inte6

Equity and Noncontrolling Interests - Changes in Accumulated Other Comprehensive Income, Net of Tax (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Foreign Currency Translation Adjustments	'		'
Equity [Line Items]	'		'
Aggregate adjustment for the period, tax	$6		$6
Realized and Unrealized Gains (Losses) on Derivatives	'		'
Equity [Line Items]	'		'
Current period changes in fair value, derivatives, tax	0		1
Reclassification to income, derivatives, tax	0	[1]	-2	[1]
Realized and Unrealized Gains (Losses) on Marketable Common Stock	'		'
Equity [Line Items]	'		'
Current period changes in fair value, marketable common stock, tax	0		0
Reclassification to income, marketable common stock, tax	0	[2]	0	[2]
Pension And Postretirement Plans	'		'
Equity [Line Items]	'		'
Reclassification to income, pension and postretirement, tax	($1)	[3]	($4)	[3]
[1]	Refer to Note 15, "Derivative Instruments and Hedging Activities," of the notes to consolidated financial statements for disclosure of the line items on the consolidated statements of income affected by reclassifications from AOCI into income related to derivatives
[2]	Refer to Note 16, "Fair Value Measurements," of the notes to consolidated financial statements for disclosure of the line item on the consolidated statements of income affected by reclassifications from AOCI into income related to marketable common stock.
[3]	Refer to Note 11, "Pension and Postretirement Plans," of the notes to consolidated financial statements for disclosure of the components of the Company's net periodic benefit costs associated with its defined benefit pension and postretirement plans. For the three months ended December 31, 2013, the amount reclassified from AOCI into income for pension and postretirement plans was primarily recorded in cost of sales on the consolidated statement of income. For the three months ended December 31, 2012, the amount reclassified from AOCI into income was split approximately evenly between cost of sales and selling, general and administrative expenses on the consolidated statement of income.

Derivative_Instruments_and_Hed2

Derivative Instruments and Hedging Activities - Additional Information (Detail)

3 Months Ended

Share data in Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2005

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Mar. 31, 2006

Mar. 31, 2011

Mar. 31, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2013

USD ($)

USD ($)

USD ($)

JPY (¥)

USD ($)

JPY (¥)

JPY (¥)

Agreement

Series One

Series Two

Series Three

Series Four

Series Five

Swap

Swap

Agreement

Swap

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Swap

Swap

Swap

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Hedge percentage for foreign exchange transactional exposures, Minimum

70.00%

'

'

'

'

'

'

'

'

'

'

'

'

Hedge percentage for foreign exchange transactional exposures, Maximum

90.00%

'

'

'

'

'

'

'

'

'

'

'

'

Number of cross currency interest rate swaps outstanding

4

3

'

'

5

5

'

'

'

'

'

'

'

Cross-currency interest rate swaps outstanding

'

'

'

¥ 20,000,000,000

'

¥ 25,000,000,000

¥ 20,000,000,000

'

'

'

'

'

'

Common stock, shares hedged

4.6

4.5

'

'

4.4

4.4

'

'

'

'

'

'

'

Fixed to floating interest rate swaps entered

'

'

'

'

'

'

'

'

100,000,000

300,000,000

450,000,000

125,000,000

800,000,000

Coupon rate of notes

'

'

'

'

'

'

'

'

5.80%

4.88%

1.75%

7.70%

5.50%

Number of fixed to floating interest rate swaps entered

'

'

'

'

'

'

'

'

'

2

5

'

4

Number of fixed to floating interest rate swaps outstanding

10

7

'

'

10

10

'

'

'

'

'

'

'

Types of notes forward treasury lock agreements fixed portion of future interest cost

'

'

'5-year, 10-year and 30-year bonds

'

'

'

'

'

'

'

'

'

'

Number of forward treasury lock agreements

'

'

3

'

'

'

'

'

'

'

'

'

'

Number of forward treasury lock agreements terminated

'

'

'

'

'

'

'

3

'

'

'

'

'

Notional amount of forward treasury lock agreements, total

'

'

1,300,000,000

'

'

'

'

'

'

'

'

'

'

Amount of gains (losses) recognized in CTA on the effective portion of outstanding net investment hedges

11,000,000

12,000,000

'

'

4,000,000

'

'

'

'

'

'

'

'

Gains (losses) reclassified from CTA to income for the Company's outstanding net investment hedges

0

0

'

'

'

'

'

'

'

'

'

'

'

Gains (losses) recognized in income for the ineffective portion of cash flow hedges

$0

$0

'

'

'

'

'

'

'

'

'

'

'

Derivative_Instruments_and_Hed3

Derivative Instruments and Hedging Activities - Outstanding commodity hedge contracts (Detail)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
	T	T	lb
	lb	lb	T
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'	'
Pounds of Copper	12,070,000	14,705,000	11,960,000
Metric Tons of Lead	7,500	23,900	23,700
Metric Tons of Aluminum	1,693	2,709	2,084
Metric Tons of Tin	1,504	2,052	1,008

Derivative_Instruments_and_Hed4

Derivative Instruments and Hedging Activities - Location and Fair Values of Derivative Instruments and Hedging Activities (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	$300	$236	$188
Derivative Liabilities	1,416	1,414	773
Designated as Hedging Instrument	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	50	39	46
Derivative Liabilities	1,404	1,403	768
Designated as Hedging Instrument | Other Current Assets | Foreign Currency Exchange Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	21	19	10
Designated as Hedging Instrument | Other Current Assets | Commodity Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	5	8	8
Designated as Hedging Instrument | Other Current Assets | Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	1	2	2
Designated as Hedging Instrument | Other Current Assets | Cross-Currency Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	19	7	21
Designated as Hedging Instrument | Other Noncurrent Assets | Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	4	3	5
Designated as Hedging Instrument | Other Noncurrent Assets | Equity swap	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	0	0	0
Designated as Hedging Instrument | Other Current Liabilities | Foreign Currency Exchange Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	24	21	12
Designated as Hedging Instrument | Other Current Liabilities | Commodity Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	1	3	0
Designated as Hedging Instrument | Current Portion of Long-Term Debt | Fixed Rate Debt Swapped to Floating	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	451	452	301
Designated as Hedging Instrument | Long-Term Debt | Fixed Rate Debt Swapped to Floating	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	928	927	455
Not Designated as Hedging Instrument	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	250	197	142
Derivative Liabilities	12	11	5
Not Designated as Hedging Instrument | Other Current Assets | Foreign Currency Exchange Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	14	14	4
Not Designated as Hedging Instrument | Other Current Assets | Commodity Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	0	0	0
Not Designated as Hedging Instrument | Other Current Assets | Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	0	0	0
Not Designated as Hedging Instrument | Other Current Assets | Cross-Currency Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	0	0	0
Not Designated as Hedging Instrument | Other Noncurrent Assets | Interest Rate Swaps	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	0	0	0
Not Designated as Hedging Instrument | Other Noncurrent Assets | Equity swap	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivatives Assets	236	183	138
Not Designated as Hedging Instrument | Other Current Liabilities | Foreign Currency Exchange Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	12	11	5
Not Designated as Hedging Instrument | Other Current Liabilities | Commodity Derivatives	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Not Designated as Hedging Instrument | Current Portion of Long-Term Debt | Fixed Rate Debt Swapped to Floating	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Not Designated as Hedging Instrument | Long-Term Debt | Fixed Rate Debt Swapped to Floating	'	'	'
Derivative Instruments [Line Items]	'	'	'
Derivative Liabilities	$0	$0	$0

Derivative_Instruments_and_Hed5

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities - Offsetting Derivative Assets and Liabilities (Details) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Offsetting Derivative Assets and Liabilities [Abstract]	'	'	'
Gross amount recognized	$300	$236	$188
Gross amount recognized	1,416	1,414	773
Gross amount eligible for offsetting	-9	-9	-7
Gross amount eligible for offsetting	-9	-9	-7
Net derivative amount	291	227	181
Net derivative amount	$1,407	$1,405	$766

Derivative_Instruments_and_Hed6

Derivative Instruments and Hedging Activities - Location and Amount of Gains and Losses on Derivative Instruments and Related Hedge Items (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	$46	$18	'
Foreign Currency Exchange Derivatives | Cost of Sales	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	-1	0	'
Foreign Currency Exchange Derivatives | Net Financing Charges	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	3	-1	'
Foreign Currency Exchange Derivatives | Provision for Income Taxes	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	0	4	'
Equity swap | Selling, General And Administrative	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	44	15	'
Cash Flow Hedging	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Reclassified from AOCI into Income	1	6	'
Amount of Gain (Loss) Recognized in AOCI on Derivative	6	11	7
Cash Flow Hedging | Foreign Currency Exchange Derivatives	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in AOCI on Derivative	-4	-2	-3
Cash Flow Hedging | Foreign Currency Exchange Derivatives | Cost of Sales	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Reclassified from AOCI into Income	2	1	'
Cash Flow Hedging | Commodity Derivatives	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in AOCI on Derivative	3	5	3
Cash Flow Hedging | Commodity Derivatives | Cost of Sales	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Reclassified from AOCI into Income	-1	5	'
Cash Flow Hedging | Forward Treasury Locks	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in AOCI on Derivative	7	8	7
Fair Value Hedging	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	0	0	'
Fair Value Hedging | Interest Rate Swaps | Net Financing Charges	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	0	-1	'
Fair Value Hedging | Fixed Rate Debt Swapped to Floating | Net Financing Charges	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	$0	$1	'

Fair_Value_Measurements_Assets

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	$300	$236	$188
Derivative Liabilities	1,416	1,414	773
Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Total assets	325	266	220
Total liabilities	1,416	1,414	773
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Total assets	261	213	170
Total liabilities	0	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Total assets	64	53	50
Total liabilities	1,416	1,414	773
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Total assets	0	0	0
Total liabilities	0	0	0
Other Noncurrent Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Investments in marketable common stock	25	30	32
Other Noncurrent Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Investments in marketable common stock	25	30	32
Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Investments in marketable common stock	0	0	0
Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Investments in marketable common stock	0	0	0
Foreign Currency Exchange Derivatives | Other Current Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	35	33	14
Foreign Currency Exchange Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Foreign Currency Exchange Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	35	33	14
Foreign Currency Exchange Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Foreign Currency Exchange Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	36	32	17
Foreign Currency Exchange Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Foreign Currency Exchange Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	36	32	17
Foreign Currency Exchange Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Commodity Derivatives | Other Current Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	5	8	8
Commodity Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Commodity Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	5	8	8
Commodity Derivatives | Other Current Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Commodity Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	1	3	'
Commodity Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	'
Commodity Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	1	3	'
Commodity Derivatives | Other Current Liabilities | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	'
Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	1	2	2
Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	1	2	2
Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Interest Rate Swaps | Other Noncurrent Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	4	3	5
Interest Rate Swaps | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Interest Rate Swaps | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	4	3	5
Interest Rate Swaps | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Equity swap | Other Noncurrent Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	236	183	138
Equity swap | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	236	183	138
Equity swap | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Equity swap | Other Noncurrent Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Cross-Currency Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	19	7	21
Cross-Currency Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Cross-Currency Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	19	7	21
Cross-Currency Interest Rate Swaps | Other Current Assets | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivatives Assets	0	0	0
Fixed Rate Debt Swapped to Floating | Current Portion of Long-Term Debt | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	451	452	301
Fixed Rate Debt Swapped to Floating | Current Portion of Long-Term Debt | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Fixed Rate Debt Swapped to Floating | Current Portion of Long-Term Debt | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	451	452	301
Fixed Rate Debt Swapped to Floating | Current Portion of Long-Term Debt | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Fixed Rate Debt Swapped to Floating | Long-Term Debt | Fair Value, Measurements, Recurring	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	928	927	455
Fixed Rate Debt Swapped to Floating | Long-Term Debt | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	0	0	0
Fixed Rate Debt Swapped to Floating | Long-Term Debt | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	928	927	455
Fixed Rate Debt Swapped to Floating | Long-Term Debt | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Derivative Liabilities	$0	$0	$0

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail)

3 Months Ended

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Mar. 31, 2011

Mar. 31, 2011

Mar. 31, 2011

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2012

USD ($)

JPY (¥)

USD ($)

JPY (¥)

USD ($)

JPY (¥)

Series One

Series Two

Series Three

Series Four

Series Five

Unrealized Losses [Member]

Unrealized Losses [Member]

Unrealized Losses [Member]

Unrealized Gains [Member]

Unrealized Gains [Member]

Unrealized Gains [Member]

Swap

Swap

Swap

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Swap

Swap

Swap

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed to floating interest rate swaps entered

'

'

'

'

'

'

$100,000,000

$300,000,000

$450,000,000

$125,000,000

$800,000,000

'

'

'

'

'

'

Coupon rate of notes

'

'

'

'

'

'

5.80%

4.88%

1.75%

7.70%

5.50%

'

'

'

'

'

'

Number of fixed to floating interest rate swaps entered

'

'

'

'

'

'

'

2

5

'

4

'

'

'

'

'

'

Number of fixed to floating interest rate swaps outstanding

10

'

10

10

7

7

'

'

'

'

'

'

'

'

'

'

'

Number of cross currency interest rate swaps outstanding

4

'

5

5

3

3

'

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

20,000,000,000

'

25,000,000,000

'

20,000,000,000

'

'

'

'

'

'

'

'

'

'

'

Unrealized gains (losses) on investments in marketable common stock

'

'

'

'

'

'

'

'

'

'

'

0

0

0

5,000,000

7,000,000

8,000,000

Proceeds from sale of marketable common stock

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized gain on sale of marketable common stock

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of long term debt

$6,000,000,000

'

$5,700,000,000

'

$6,300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Segment_Information_Additional

Segment Information - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2013
	Segment
	Business
Segment Reporting Information [Line Items]	'
Number of primary businesses	3
Number of reportable segments	8
Building Efficiency | Prior to Reorganization	'
Segment Reporting Information [Line Items]	'
Number of reportable segments	5
Building Efficiency | After Reorganization	'
Segment Reporting Information [Line Items]	'
Number of reportable segments	4
North America Systems and Service | After Combination	'
Segment Reporting Information [Line Items]	'
Number of reportable segments	1

Segment_Information_Financial_

Segment Information - Financial Information Related to Company's Reportable Segments (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'
Net Sales	$10,908	$10,422
Segment Income	686	549
Net financing charges	-55	-61
Income before income taxes	631	488
Power Solutions	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	1,772	1,676
Segment Income	308	276
Automotive Experience	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	5,755	5,214
Segment Income	232	101
Automotive Experience | Seating	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	4,279	3,889
Segment Income	176	85
Automotive Experience | Interiors	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	1,142	1,012
Segment Income	22	-10
Automotive Experience | Electronics	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	334	313
Segment Income	34	26
Building Efficiency	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	3,381	3,532
Segment Income	146	172
Building Efficiency | North America Systems and Service	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	991	988
Segment Income	67	68
Building Efficiency | Global Workplace Solutions	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	1,077	1,134
Segment Income	18	35
Building Efficiency | Building Efficiency Asia	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	510	505
Segment Income	76	66
Building Efficiency | Building Efficiency Other	'	'
Segment Reporting Information [Line Items]	'	'
Net Sales	803	905
Segment Income	($15)	$3

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'	'	'
Reserves for environmental liabilities	$24	$25	$24
Conditional asset retirement obligations	$59	$56	$81