Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	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