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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 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 $ 13,411 $ 14,076 $ 13,282 $ 19,021
Additions for new sales 2 12 5 22
Net reductions (1,416) (265) (1,468) (5,470)
Provision 87 197 265 447
Liability for representations and warranties and corporate guarantees, end of period $ 12,084 $ 14,020 $ 12,084 $ 14,020