XML 102 R91.htm IDEA: XBRL DOCUMENT v3.5.0.2
Long-term Debt (Long-term Debt Portfolio) (Details) - USD ($)
$ in Millions
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Long-term Debt, Current Maturities $ 15,084 $ 11,256
Long-term Debt, Excluding Current Maturities 41,271 54,647
Derivative, Amount of Hedged Item 481 331
Long-term debt 56,836 66,234
Unsecured Debt [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Current Maturities 3,279 1,829
Long-term Debt, Excluding Current Maturities 16,410 18,803
Derivative, Amount of Hedged Item 471 334
Long-term debt 20,160 20,966
Secured Debt [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Current Maturities 11,805 9,427
Long-term Debt, Excluding Current Maturities 24,861 35,844
Derivative, Amount of Hedged Item 10 (3)
Long-term debt 36,676 45,268
Trust Preferred Securities Subject to Mandatory Redemption [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Excluding Current Maturities 2,600 2,600
Federal Home Loan Bank Advances [Member]    
Debt Instrument [Line Items]    
Long-term debt 6,100 5,400
Committed Funding Facilities [Member]    
Debt Instrument [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity 18,125 20,415
Committed Funding Facilities [Member] | Bank Funding Member | Secured Debt [Member]    
Debt Instrument [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 3,600 $ 3,250