v3.3.0.814
Financing Receivables and Allowance for Losses (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Dec. 31, 2014
Sep. 30, 2014
Dec. 31, 2013
Financing Receivable [Line Items]          
Financing receivables, net of deferred income $ 87,204 $ 87,204 $ 126,561    
Allowance for losses (3,457) (3,457) (4,104) $ (4,231) $ (4,025)
Financing receivables, net [1] 83,748 83,748 122,457    
Financing receivable held for sale 0 29,016      
Assets of Businesses Held for Sale [Member]          
Financing Receivable [Line Items]          
Financing receivable held for sale 0 5,508      
Loans Receivables [Member]          
Financing Receivable [Line Items]          
Financing receivables, net of deferred income 82,196 82,196 120,007    
Financing Receivable [Member]          
Financing Receivable [Line Items]          
Financing receivables, net of deferred income $ 5,008 $ 5,008 $ 6,554    
[1] Amounts may not add due to rounding.