Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2011

Goodwill and Other Intangible Assets [Abstract]

Changes in carrying amount of goodwill

					Currency
	September 30,		Business		Translation and			September 30,
	2009		Acquisitions		Other			2010
Building efficiency
North America systems	$	525	$	—	$	(3	)	$	522
North America service		668		8		—			676
Global workplace solutions		174		—		3			177
Asia		369		—		10			379
Other		1,116		—		(31	)		1,085
Automotive experience
North America		1,376		—		2			1,378
Europe		1,211		5		(76	)		1,140
Asia		223		—		10			233
Power solutions		880		51		(20	)		911
Total	$	6,542	$	64	$	(105	)	$	6,501

					Currency
	September 30,		Business		Translation and			September 30,
	2010		Acquisitions		Other			2011
Building efficiency
North America systems	$	522	$	—	$	(3	)	$	519
North America service		676		33		1			710
Global workplace solutions		177		—		7			184
Asia		379		—		12			391
Other		1,085		—		(20	)		1,065
Automotive experience
North America		1,378		2		(1	)		1,379
Europe		1,140		371		(8	)		1,503
Asia		233		16		12			261
Power solutions		911		96		(3	)		1,004
Total	$	6,501	$	518	$	(3	)	$	7,016

Other Intangible Assets

	September 30, 2011							September 30, 2010
	Gross							Gross
	Carrying		Accumulated					Carrying		Accumulated
	Amount		Amortization			Net		Amount		Amortization			Net
Amortized intangible assets
Patented technology	$	298	$	(209	)	$	89	$	277	$	(191	)	$	86
Customer relationships		487		(91	)		396		373		(70	)		303
Miscellaneous		184		(38	)		146		68		(31	)		37
Total amortized intangible assets		969		(338	)		631		718		(292	)		426
Unamortized intangible assets
Trademarks		314		—			314		315		—			315
Total intangible assets	$	1,283	$	(338	)	$	945	$	1,033	$	(292	)	$	741