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
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Loss Contingency Accrual [Roll Forward]        
Net reductions $ (72) $ (146) $ (137) $ (236)
Representations and Warranties Obligations and Corporate Guarantees        
Loss Contingency Accrual [Roll Forward]        
Additions for new sales 2 2 3 5
Net reductions (233) (1,417) (407) (1,469)
Representations and Warranties Obligations and Corporate Guarantees | Provision for Loan Lease and Other Losses        
Loss Contingency Accrual [Roll Forward]        
Provision (205) 88 (121) 266
Representations and Warranties Obligations and Corporate Guarantees | Accrued Expenses And Other Liabilities        
Loss Contingency Accrual [Roll Forward]        
Liability for representations and warranties and corporate guarantees, January 1 11,992 13,411 12,081 13,282
Liability for representations and warranties and corporate guarantees, March 31 $ 11,556 $ 12,084 $ 11,556 $ 12,084