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Representations and Warranties Obligations and Corporate Guarantees - Loan Repurchases (Details) (USD $)
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3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||||||||||||
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Jun. 30, 2014
First Lien Mortgages [Member]
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Jun. 30, 2013
First Lien Mortgages [Member]
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Jun. 30, 2014
First Lien Mortgages [Member]
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Jun. 30, 2013
First Lien Mortgages [Member]
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Jun. 30, 2014
Obligation to Repurchase Receivables Sold [Member]
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Jun. 30, 2013
Obligation to Repurchase Receivables Sold [Member]
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Jun. 30, 2014
Obligation to Repurchase Receivables Sold [Member]
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Jun. 30, 2013
Obligation to Repurchase Receivables Sold [Member]
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Jun. 30, 2014
Obligation to Repurchase Receivables Sold [Member]
First Lien Mortgages [Member]
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Jun. 30, 2013
Obligation to Repurchase Receivables Sold [Member]
First Lien Mortgages [Member]
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Jun. 30, 2014
Obligation to Repurchase Receivables Sold [Member]
First Lien Mortgages [Member]
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Jun. 30, 2013
Obligation to Repurchase Receivables Sold [Member]
First Lien Mortgages [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
First Lien Mortgages [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
First Lien Mortgages [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
First Lien Mortgages [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
First Lien Mortgages [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
Home Equity [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
Home Equity [Member]
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Jun. 30, 2014
Indemnification Agreement [Member]
Home Equity [Member]
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Jun. 30, 2013
Indemnification Agreement [Member]
Home Equity [Member]
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May 28, 2014
FGIC Settlement [Member]
Second Mortgage [Member]
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May 15, 2014
FGIC Settlement [Member]
Second Mortgage [Member]
trust
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Apr. 11, 2014
FGIC Settlement [Member]
Second Mortgage [Member]
trust
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Dec. 31, 2013
Federal National Mortgage Association FNMA [Member]
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| Guarantor Obligations [Line Items] | |||||||||||||||||||||||||||||||||
| Amount of repurchase demands not included in unresolved repurchase claims | $ 1,200,000,000 | $ 1,200,000,000 | $ 1,200,000,000 | ||||||||||||||||||||||||||||||
| Residental Mortgage Loans Repurchased in Settlement | 6,600,000,000 | ||||||||||||||||||||||||||||||||
| Unpaid Principal Balance | 203,000,000 | 284,000,000 | 361,000,000 | 848,000,000 | 200,000,000 | 268,000,000 | 347,000,000 | 824,000,000 | 58,000,000 | 112,000,000 | 104,000,000 | 533,000,000 | 142,000,000 | 156,000,000 | 243,000,000 | 291,000,000 | 3,000,000 | 16,000,000 | 14,000,000 | 24,000,000 | |||||||||||||
| Cash Paid for Repurchases | 143,000,000 | 234,000,000 | 222,000,000 | 733,000,000 | 63,000,000 | 120,000,000 | 114,000,000 | 557,000,000 | 146,000,000 | 250,000,000 | 236,000,000 | 758,000,000 | 80,000,000 | 114,000,000 | 108,000,000 | 176,000,000 | 3,000,000 | 16,000,000 | 14,000,000 | 25,000,000 | |||||||||||||
| Loss | 100,000,000 | 155,000,000 | 140,000,000 | 273,000,000 | 103,000,000 | 171,000,000 | 154,000,000 | 298,000,000 | 20,000,000 | 41,000,000 | 32,000,000 | 97,000,000 | 80,000,000 | 114,000,000 | 108,000,000 | 176,000,000 | 3,000,000 | 16,000,000 | 14,000,000 | 25,000,000 | |||||||||||||
| Payment Monoline Settlement | $ 976,000,000 | $ 1,700,000,000 | |||||||||||||||||||||||||||||||
| Number Of Trusts Involved In Settlement Agreement | 1 | 1 | 7 | ||||||||||||||||||||||||||||||