Quarterly report pursuant to Section 13 or 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Loan Repurchases (Details)

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Representations and Warranties Obligations and Corporate Guarantees - Loan Repurchases (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Loss Contingencies [Line Items]        
Unpaid Principal Balance $ 300 $ 203 $ 438 $ 361
Cash Paid for Repurchases 72 146 137 236
Loss 41 103 78 154
First Mortgage        
Loss Contingencies [Line Items]        
Unpaid Principal Balance 298 200 432 347
Cash Paid for Repurchases 70 143 131 222
Loss 39 100 72 140
First Mortgage | Repurchases        
Loss Contingencies [Line Items]        
Unpaid Principal Balance 38 58 73 104
Cash Paid for Repurchases 42 63 80 114
Loss 12 20 22 32
First Mortgage | Indemnification Agreement        
Loss Contingencies [Line Items]        
Unpaid Principal Balance 260 142 359 243
Cash Paid for Repurchases 28 80 51 108
Loss 27 80 50 108
Home equity | Indemnification Agreement        
Loss Contingencies [Line Items]        
Unpaid Principal Balance 2 3 6 14
Cash Paid for Repurchases 2 3 6 14
Loss $ 2 $ 3 $ 6 $ 14