Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Gross Book Value	$ 6,549	$ 6,491
Accumulated Amortization	1,998	1,922
Net Book Value	4,551	4,569
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Book Value	2,503	2,489
Accumulated Amortization	686	645
Net Book Value	1,817	1,844
Technology/Technical Know-How
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,866	1,864
Accumulated Amortization	681	653
Net Book Value	1,185	1,211
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross Book Value	1,623	1,625
Accumulated Amortization	380	367
Net Book Value	1,243	1,258
Other
Finite Lived Intangible Assets [Line Items]
Gross Book Value	557	513
Accumulated Amortization	251	257
Net Book Value	$ 306	$ 256