Annual report pursuant to Section 13 and 15(d)

DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details)

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DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Debt Instrument [Line Items]    
Document Fiscal Year Focus 2012  
Principal Value $ 12,432  
Senior notes | 4.50% senior notes
   
Debt Instrument [Line Items]    
Principal Value 1,750  
Maturity Jan. 01, 2013  
Average Effective Percentage Rate 2.51% 2.39%
Senior notes | 3.875% senior notes
   
Debt Instrument [Line Items]    
Principal Value 1,000  
Maturity Jan. 01, 2014  
Average Effective Percentage Rate 1.14% 0.99%
Senior notes | 1.125% senior notes
   
Debt Instrument [Line Items]    
Principal Value 375  
Maturity Jan. 01, 2017  
Average Effective Percentage Rate 0.57% 0.00%
Senior notes | 5.50% senior notes
   
Debt Instrument [Line Items]    
Principal Value 750  
Maturity Jan. 01, 2018  
Average Effective Percentage Rate 2.71% 2.53%
Senior notes | 5.125% senior notes
   
Debt Instrument [Line Items]    
Principal Value 1,000  
Maturity Jan. 01, 2019  
Average Effective Percentage Rate 2.20% 2.04%
Senior notes | 3.125% senior notes
   
Debt Instrument [Line Items]    
Principal Value 1,500  
Maturity Jan. 01, 2021  
Average Effective Percentage Rate 1.28% 0.52%
Senior notes | 2.45% senior notes
   
Debt Instrument [Line Items]    
Principal Value $ 1,000  
Maturity Jan. 01, 2022  
Average Effective Percentage Rate 0.86% 0.00%