Acquisitions And Discontinued Operations [Line Items]

No definition available.

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- Definition

Number of Joint Ventures Divested

+ References

No definition available.

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- Definition

The purchase price associated with the formation of a joint venture.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

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- Definition

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

+ References

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- Definition

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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- Definition

The net cash inflow or outflow associated with the aggregate amount of adjustment to the purchase price of a previous acquisition.

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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- Definition

The cash inflow from the sale of an investment interest in a joint venture that the reporting entity has not previously accounted for using consolidation or the equity method of accounting.

+ References

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Acquisitions and Divestitures - Additional Information (Detail) $ in Millions	3 Months Ended			6 Months Ended			12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Acquisitions And Discontinued Operations [Line Items]
Cash paid for business acquisition	$ 0		$ 9	$ 133		$ 22
Goodwill recorded in connection with business acquisitions				197	$ 13
Fair value adjustment of equity investment	4		0	4		0
Sales price of divestiture	$ 22		141	40		141
Reduction in goodwill related to business divestitures				$ 0	20
Global Workplace Solutions
Acquisitions And Discontinued Operations [Line Items]
Income from discontinued operations before income taxes			$ 227			$ 269
Individually Immaterial Acquisitions
Acquisitions And Discontinued Operations [Line Items]
Number of acquisitions				1		3
Purchase price, net of cash acquired				$ 3		$ 47
Cash paid for business acquisition				0		18
Goodwill recorded in connection with business acquisitions				4		9
Air Distribution Technologies, Inc.
Acquisitions And Discontinued Operations [Line Items]
Adjustment to purchase price of previous acquisition						4
Goodwill adjustment related to previous acquisition							$ 21
Building Efficiency Asia
Acquisitions And Discontinued Operations [Line Items]
Goodwill recorded in connection with business acquisitions				193	0
Reduction in goodwill related to business divestitures				0	0
Building Efficiency Asia \| Hitachi Joint Venture [Member]
Acquisitions And Discontinued Operations [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		60.00%
Payments to Acquire Interest in Joint Venture		$ 133
Purchase Price of Joint Venture		563
Cash Acquired from Acquisition		$ 430
Goodwill recorded in connection with business acquisitions				193
Global Workplace Solutions \| Brookfield Johnson Controls
Acquisitions And Discontinued Operations [Line Items]
Number Of Joint Ventures Divested			2
Reduction in goodwill related to business divestitures			$ 20
Proceeds from Divestiture of Interest in Joint Venture			141
Income from discontinued operations before income taxes			200			$ 200
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			$ 127
Building Efficiency Rest of World [Member]
Acquisitions And Discontinued Operations [Line Items]
Goodwill recorded in connection with business acquisitions				4	0
Reduction in goodwill related to business divestitures				0	0
Building Efficiency Rest of World [Member] \| Individually Immaterial Acquisitions
Acquisitions And Discontinued Operations [Line Items]
Fair value adjustment of equity investment				4
Power Solutions
Acquisitions And Discontinued Operations [Line Items]
Goodwill recorded in connection with business acquisitions				0	0
Reduction in goodwill related to business divestitures				0	0
Building Efficiency Products North America
Acquisitions And Discontinued Operations [Line Items]
Goodwill recorded in connection with business acquisitions				0	13
Reduction in goodwill related to business divestitures				$ 0	$ 14
Building Efficiency Products North America \| Air Distribution Technologies, Inc.
Acquisitions And Discontinued Operations [Line Items]
Goodwill recorded in connection with business acquisitions								$ 837