v2.4.0.8
Debt (Debt) (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Debt and Capital Lease Obligations $ 11,454 $ 11,112
Debt, Current 194 204
Long-term Debt, Excluding Current Maturities 11,260 10,908
Corporate Debt Securities [Member]
   
Debt Instrument [Line Items]    
Long-term Debt 2,195 4,989
Unsecured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term Debt 2,800 0
Loans Payable [Member]
   
Debt Instrument [Line Items]    
Long-term Debt 2,806 2,828
Notes Payable, Other Payables [Member]
   
Debt Instrument [Line Items]    
Long-term Debt 1,861 1,901
Secured Debt [Member]
   
Debt Instrument [Line Items]    
Long-term Debt 1,600 1,191
Capital Lease Obligations [Member]
   
Debt Instrument [Line Items]    
Long-term Debt $ 192 $ 203