v2.4.0.6
Intangible Assets, Net (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Intangible Assets [Line Items]          
Gross Carrying Amount $ 15,794   $ 15,794   $ 15,830
Accumulated Amortization 6,777   6,777   5,991
Net Carrying Amount 9,017   9,017   9,839
Non amortizing in process research and development 175   175   175
Total Intangible Assets, Gross 15,969   15,969   16,005
Total Intangible Assets, Net 9,192   9,192   10,014
Amortization Expense Related to Intangible Assets 392 463 790 966  
Future Amortization Expense [Abstract]          
2013     1,228    
2014     611    
2015     313    
2016     314    
2017     311    
Technology and intellectual property [Member]
          
Intangible Assets [Line Items]          
Gross Carrying Amount 7,751   7,751   7,751
Accumulated Amortization 5,695   5,695   5,081
Net Carrying Amount 2,056   2,056   2,670
Brands [Member]
          
Intangible Assets [Line Items]          
Gross Carrying Amount 5,393   5,393   5,410
Accumulated Amortization 447   447   374
Net Carrying Amount 4,946   4,946   5,036
Dealer Network and Customer Relationships [Member]
          
Intangible Assets [Line Items]          
Gross Carrying Amount 2,123   2,123   2,138
Accumulated Amortization 378   378   322
Net Carrying Amount 1,745   1,745   1,816
Favorable contracts [Member]
          
Intangible Assets [Line Items]          
Gross Carrying Amount 510   510   514
Accumulated Amortization 240   240   200
Net Carrying Amount 270   270   314
Other [Member]
          
Intangible Assets [Line Items]          
Gross Carrying Amount 17   17   17
Accumulated Amortization 17   17   14
Net Carrying Amount $ 0   $ 0   $ 3