XML 17 R70.htm IDEA: XBRL DOCUMENT v3.3.0.814
Components of Net Pension Cost (Parenthetical) (Detail) - Severance and Related Costs - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]    
Pension curtailment losses   $ (17)
2014-2018 Restructuring Program    
Defined Benefit Plan Disclosure [Line Items]    
Settlement losses $ 1 $ 7