Quarterly report pursuant to Section 13 or 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Liabilities (Details)

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Representations and Warranties Obligations and Corporate Guarantees - Liabilities (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Sep. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Sep. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Sep. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Sep. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Provision for Loan Lease and Other Losses
Sep. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Provision for Loan Lease and Other Losses
Sep. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Provision for Loan Lease and Other Losses
Sep. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Provision for Loan Lease and Other Losses
Sep. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Jun. 30, 2014
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Dec. 31, 2013
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Sep. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Jun. 30, 2013
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Dec. 31, 2012
Representations and Warranties Obligations and Corporate Guarantees
Accrued Liabilities And Other Liabilities
Loss Contingency Accrual [Roll Forward]                                    
Liability for representations and warranties and corporate guarantees, beginning of period                         $ 11,948 $ 12,084 $ 13,282 $ 14,116 $ 14,020 $ 19,021
Additions for new sales         2 9 7 31                    
Net reductions (112) (277) (348) (1,035) (305) (236) (1,773) (5,706)                    
Provision                 167 323 432 770            
Liability for representations and warranties and corporate guarantees, September 30                         $ 11,948 $ 12,084 $ 13,282 $ 14,116 $ 14,020 $ 19,021