v3.6.0.2
Restructuring Charges - Components of Restructuring Charges Less Releases Recorded in Liabilities (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]      
Net restructuring charges $ 68 $ 264 $ 28
Personnel Lay-Off Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Net restructuring charges 52 239 43
Other Exit Costs [Member]      
Restructuring Cost and Reserve [Line Items]      
Net restructuring charges 19 27 1
Release of Provisions/Accruals [Member]      
Restructuring Cost and Reserve [Line Items]      
Net restructuring charges $ (3) $ (2) $ (16)