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
Mar. 31, 2014
Mar. 31, 2013
Guarantees [Abstract]    
Percentage of the voting rights of outstanding securities required to investigate loans files and demand repurchase of loans 25.00%  
Liability For Representations Warranties And Guarantees [Roll Forward]    
Liability for representations and warranties and corporate guarantees, beginning of year $ 13,282 $ 19,021
Additions for new sales 3 10
Net reductions (52) (5,205)
Provision 178 250
Liability for representations and warranties and corporate guarantees, end of period $ 13,411 $ 14,076