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, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Liability For Representations Warranties And Guarantees [Roll Forward]        
Liability for representations and warranties and corporate guarantees, beginning of year $ 15,746 $ 6,220 $ 15,858 $ 5,438
Additions for new sales 6 3 11 10
Charge-offs (204) (2,480) (603) (2,718)
Provision 395 14,037 677 15,050
Liability for representations and warranties and corporate guarantees, end of period $ 15,943 $ 17,780 $ 15,943 $ 17,780