XML 97 R98.htm IDEA: XBRL DOCUMENT v2.4.0.6
Post-Retirement and Other Long-Term Employees Benefits - Reconciliation for Plan Assets Measured at Fair Value Using Unobservable Inputs (Level 3) (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]    
Reclassification to Level 3   $ 94
Plan assets at fair value at end of year 422 378
Fair Value, Inputs, Level 3 [Member]
    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets at fair value at beginning of year 104 12
Actual return on plan assets 3  
Reclassification to Level 2   (2)
Contributions (employer and employee) 16  
Benefits paid (3)  
Settlements (7)  
Reclassification to Level 3 4 94
Foreign currency translation adjustment 3  
Plan assets at fair value at end of year $ 120 $ 104