v2.4.0.8
Other Comprehensive (Loss) Income - Textual (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Accumulated Other Comprehensive Income [Line Items]        
Pension and other postretirement benefit plans $ (2,346) $ (909) [1] $ (3,667) [1] $ (2,043)
Cumulative translation gains (losses) relating to translation impact of intangible assets 392      
Pension plan net loss [Member]
        
Accumulated Other Comprehensive Income [Line Items]        
Pension and other postretirement benefit plans   (1,719) (4,056)  
Other postretirement benefit plan net loss [Member]
        
Accumulated Other Comprehensive Income [Line Items]        
Pension and other postretirement benefit plans   (80) (414)  
Pension plan prior service cost credit [Member]
        
Accumulated Other Comprehensive Income [Line Items]        
Pension and other postretirement benefit plans   559 449  
Other Postretirement Benefit Plan Prior Service Cost [Member]
        
Accumulated Other Comprehensive Income [Line Items]        
Pension and other postretirement benefit plans   $ 331 $ 354  
[1] Includes pension plan net loss of $(1.7) billion and $(4.1) billion at December 31, 2013 and 2012, respectively, and other postretirement benefit plan net loss of $(80) million and $(414) million at December 31, 2013 and in 2012, respectively, as well as pension plan prior service credit of $559 million and $449 million at December 31, 2013 and 2012, respectively, and other postretirement benefit plan prior service credit of $331 million and $354 million at December 31, 2013 and 2012.