v2.4.0.6
Income taxes Income taxes (Details Textual) (USD $)
 12 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Puerto Rico Excise Tax [Member]
Dec. 31, 2012
Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]
Dec. 31, 2012
State and Local Jurisdiction [Member]
Dec. 31, 2012
Internal Revenue Service (IRS) [Member]
Dec. 31, 2012
Foreign Tax Authority [Member]
Dec. 31, 2012
2011 [Member]
Dec. 31, 2012
2010 [Member]
Dec. 31, 2012
Settlement with Taxing Authority [Member]
Feb. 27, 2013
Subsequent Event [Member]
July 1, 2013 through 2017 [Member]
Puerto Rico Excise Tax [Member]
Feb. 27, 2013
Subsequent Event [Member]
Research Tax Credit Carryforward [Member]
Income Taxes (Textual) [Abstract]                          
Prepaid taxes related to intercompany profit in inventory   $ 349,000,000                      
Increase (decrease) in valuation allowance for deferred tax assets 147,000,000 46,000,000                      
Interest and penalties related to unrecognized tax benefits recognized in income tax provision 30,000,000 23,000,000 41,000,000                    
Accrued interest and penalties associated with unrecognized tax benefits 102,000,000 105,000,000                      
Total foreign income before income taxes 3,300,000,000 3,000,000,000 3,500,000,000                    
Income taxes paid 502,000,000 595,000,000 1,344,000,000                    
Tax Credit Carryforward [Line Items]                          
Reclassification of prior year prepaid taxes associated with intercompany profit in inventory from deferred to current provision                 71,000,000 16,000,000      
Tax benefit of the retroactive extension of the 2012 R&D tax credit                         65,000,000
Tax credit carryforwards available to reduce income taxes           242,000,000              
Tax credit carryforwards for which a full valuation allowance has been provided           110,000,000              
NOL carryforwards           301,000,000 233,000,000 383,000,000          
Operating loss carryforwards requiring valuation allowance           48,000,000 75,000,000 383,000,000          
Undistributed earnings of our foreign operations that are intended to be invested indefinitely outside of the United States         22,200,000,000                
Additional income taxes required to be accrued and paid if earnings of foreign operations that are intended to be indefinitely invested outside of the United States were repatriated         7,900,000,000                
Excise Tax Rate [Abstract]                          
Period of excise tax imposed       6 years                  
Effective excise tax rate for 2011       4.00%                  
Effective excise tax rate for 2012       3.75%                  
Effective excise tax rate for 2013       2.75%                  
Effective excise tax rate for 2014       2.50%                  
Effective excise tax rate for 2015       2.25%                  
Effective excise tax rate for 2016       1.00%                  
Excise tax rate effective July 1, 2013 through 2017                       4.00%  
Decrease in unrecognized tax benefits that is reasonably possible within the succeeding twelve months due to potential tax settlements $ 280,000,000                   $ 185,000,000