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Loss and Loss Adjustment Expense Reserves (Tables) | 12 Months Ended
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Dec. 31, 2016
Text Block [Abstract] |
Present Value Of The Probability-Weighted Future Claim Payments And Recoveries |
|  |  |  |  | As of |  | As of |
| In millions |  | December 31, 2016 |  | December 31, 2015 |
| U.S. Public Finance Insurance Segment: |  |  |  |  |  |  |
|  | Loss and LAE reserves |  | $ | 97 |  | $ | 45 |
|  | Insurance loss recoverable |  | 174 |  |  | 4 |
| International and Structured Finance Insurance Segment: |  |  |  |  |  |  |
|  | Second-lien RMBS: |  |  |  |  |  |  |
|  |  | Loss and LAE reserves after VIE elimination |  |  | 44 |  |  | 51 |
|  |  | Loss and LAE reserves VIE elimination |  |  | 23 |  |  | 16 |
|  |  | Excess Spread after VIE elimination(1) |  |  | 294 |  |  | 406 |
|  |  | Excess Spread VIE elimination(2) |  |  | 53 |  |  | 93 |
|  |  | Put-Back Claims(3) |  |  | 404 |  |  | 396 |
|  | First-lien RMBS: |  |  |  |  |  |  |
|  |  | Loss and LAE reserves after VIE elimination |  |  | 300 |  |  | 277 |
|  |  | Loss and LAE reserves VIE elimination |  |  | 15 |  |  | 5 |
|  |  | Excess Spread after VIE elimination(4) |  |  | 74 |  |  | 80 |
|  |  | Excess Spread VIE elimination(5) |  |  | 18 |  |  | 8 |
|  | CDOs: |  |  |  |  |  |  |
|  |  | Loss and LAE reserves after VIE elimination |  |  | 87 |  |  | 133 |
|  |  | Loss and LAE reserves VIE elimination |  |  | 155 |  |  | 190 |
|  |  | Insurance Loss Recoverable after VIE elimination |  |  | - |  |  | 148 |
|  |  | Insurance Loss Recoverable VIE elimination |  |  | 154 |  |  | - |
|  | Other: |  |  |  |  |  |  |
|  |  | Loss and LAE reserves after VIE elimination |  |  | 13 |  |  | 10 |
|  |  | Loss and LAE reserves VIE elimination |  |  | 13 |  |  | - |
|  |  | Insurance Loss Recoverable |  |  | 5 |  |  | 9 |
| ________________ |
| (1) -As of December 31, 2016 and 2015, $280 million and $382 million were included in “Insurance loss recoverable” and $14 million and $24 million were included in “Loss and loss adjustment expense reserves” on the Company’s consolidated balance sheets, respectively. |
| (2) -As of December 31, 2016 and 2015, $53 million and $87 million were eliminated from "Insurance loss recoverable”. As of December 31, 2015, $6 million was eliminated from “Loss and loss adjustment expense reserves” on the Company’s consolidated balance sheets, respectively. |
| (3) - Reflected in “Loan repurchase commitments” presented under the heading “Assets of consolidated variable interest entities” on the Company’s consolidated balance sheets. |
| (4) -As of December 31, 2016 and 2015, $45 million and $34 million were included in “Insurance loss recoverable” and $29 million and $46 million were included in “Loss and loss adjustment expense reserves” on the Company’s consolidated balance sheets, respectively. |
| (5) -As of December 31, 2016 and 2015, $14 million and $8 million were eliminated from “Insurance loss recoverable.” As of December 31, 2016, $4 million was eliminated from “Loss and loss adjustment expense reserves” on the Company’s consolidated balance sheets. |
Schedule Of Loss And Loss Adjustment Expenses Reserves |
In millions |  | Changes in Loss and LAE Reserves for the Year Ended December 31, 2016 |  |  |
Gross Loss |  | Loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Gross Loss
and LAE |  | Payments |  | Accretion |  |  |  |  |  |  |  | Changes in |  |  |  |  |  |  |  | and LAE
Reserves as of |  | for Cases |  | of Claim |  | Changes in |  |  |  | Unearned |  | Changes in |  |  |  | Reserves as of
December 31, |  | with |  | Liability |  | Discount |  | Changes in |  | Premium |  | LAE |  |  |  | December 31,
2015 |  | Reserves |  | Discount |  | Rates |  | Assumptions |  | Revenue |  | Reserves |  | Other(1) |  | 2016
$ | 516 |  | $ | (128) |  | $ | 8 |  | $ | 5 |  | $ | 78 |  | $ | (15) |  | $ | 14 |  | $ | 63 |  | $ | 541
____________
(1) - Primarily changes in the amount and timing of payments.
In millions |  | Changes in Loss and LAE Reserves for the Year Ended December 31, 2015 |  |  |
Gross Loss |  | Loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Gross Loss
and LAE |  | Payments |  | Accretion |  |  |  |  |  |  |  | Changes in |  |  |  |  |  |  | and LAE
Reserves as of |  | for Cases |  | of Claim |  | Changes in |  |  |  | Unearned |  | Changes in |  |  |  | Reserves as of
December 31, |  | with |  | Liability |  | Discount |  | Changes in |  | Premium |  | LAE |  |  |  | December 31,
2014 |  | Reserves |  | Discount |  | Rates |  | Assumptions |  | Revenue |  | Reserves |  | Other(1) |  | 2015
$ | 506 |  | $ | (200) |  | $ | 8 |  | $ | (41) |  | $ | 88 |  | $ | 14 |  | $ | 4 |  | $ | 137 |  | $ | 516
____________ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(1) - Primarily changes in amount of actual loss payments on a high yield corporate CDO.
Schedule Of Insurance Loss Recoverable And Changes In Recoveries On Unpaid Losses |
|  |  |  |  |  |  | Changes in Insurance Loss Recoverable and Recoveries on Unpaid Losses |  |  |
|  |  |  |  |  |  | for the Year Ended December 31, 2016 |  |  |
|  |  | Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Gross
|  |  | Reserve |  | Collections |  |  |  |  |  |  |  |  |  |  | Reserve
|  |  | as of |  | for Cases |  | Accretion |  | Changes in |  |  |  |  | Changes in |  |  |  | as of
|  |  | December 31, |  | with |  | of |  | Discount |  | Changes in |  | LAE |  |  |  | December 31,
In millions |  | 2015 |  | Recoveries |  | Recoveries |  | Rates |  | Assumptions |  | Recoveries |  | Other(1) |  | 2016
Insurance loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| recoverable |  | $ | 577 |  | $ | (69) |  | $ | 5 |  | $ | (17) |  | $ | 86 |  | $ | (6) |  | $ | (72) |  | $ | 504
Recoveries on unpaid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| losses (2) |  |  | 100 |  |  | - |  |  | 1 |  |  | 3 |  |  | (34) |  |  | 9 |  |  | - |  |  | 79
Total |  | $ | 677 |  | $ | (69) |  | $ | 6 |  | $ | (14) |  | $ | 52 |  | $ | 3 |  | $ | (72) |  | $ | 583
____________
(1) - Primarily changes in amount and timing of collections.
(2) - Excludes Puerto Rico and Zohar II recoveries, which have been netted against reserves.
|  |  |  |  |  |  | Changes in Insurance Loss Recoverable and Recoveries on Unpaid Losses |  |  |
|  |  |  |  |  |  | for the Year Ended December 31, 2015 |  |  |
|  |  | Gross |  |  |  |  |  |  |  |  |  |  |  | Gross
|  |  | Reserve |  | Collections |  |  |  |  |  |  |  |  |  | Reserve
|  |  | as of |  | for Cases |  | Accretion |  | Changes in |  |  |  |  | Changes in |  |  |  | as of
|  |  | December 31, |  | with |  | of |  | Discount |  | Changes in |  | LAE |  |  |  | December 31,
In millions |  | 2014 |  | Recoveries |  | Recoveries |  | Rates |  | Assumptions |  | Recoveries |  | Other(1) |  | 2015
Insurance loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| recoverable |  | $ | 533 |  | $ | (74) |  | $ | 8 |  | $ | 1 |  | $ | 140 |  | $ | 6 |  | $ | (37) |  | $ | 577
Recoveries on unpaid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| losses (2) |  |  | 147 |  |  | - |  |  | 2 |  |  | (2) |  |  | (46) |  |  | (1) |  |  | - |  |  | 100
Total |  | $ | 680 |  | $ | (74) |  | $ | 10 |  | $ | (1) |  | $ | 94 |  | $ | 5 |  | $ | (37) |  | $ | 677
____________
(1) - Primarily changes in amount and timing of collections. |  |  |
(2) - Excludes Puerto Rico and Zohar II recoveries, which have been netted against reserves.
Schedule Of Losses And Loss Adjustment Expenses |
|  |  | Years Ended December 31, |
| In millions |  | 2016 |  | 2015 |  | 2014 |
| U.S. Public Finance Insurance Segment |  | $ | 74 |  | $ | 5 |  | $ | (10) |
| International and Structured Finance Insurance Segment: |  |  |  |  |  |  |  |  |  |
|  | Second-lien RMBS |  |  | 121 |  |  | 63 |  |  | 70 |
|  | First-lien RMBS |  |  | 41 |  |  | 34 |  |  | 65 |
|  | CDOs |  |  | (32) |  |  | 29 |  |  | 33 |
|  | Other(1) |  |  | 16 |  |  | (8) |  |  | (25) |
| Losses and LAE |  | $ | 220 |  | $ | 123 |  | $ | 133 |
| ________________ |  |  |  |  |  |  |
| (1) - Includes non-U.S. public finance and other issues. |  |  |  |  |  |  |
Schedule Of Financial Guarantees And Related Claim Liability |
|  |  |  |  | Surveillance Categories
|  |  |  |  | Caution |  | Caution |  | Caution |  |  |  |  |  |
|  |  |  |  | List |  | List |  | List |  | Classified |  |  |
$ in millions |  | Low |  | Medium |  | High |  | List |  | Total
Number of policies |  |  | 90 |  |  | 6 |  |  | 3 |  |  | 331 |  |  | 430
Number of issues (1) |  |  | 17 |  |  | 4 |  |  | 2 |  |  | 126 |  |  | 149
Remaining weighted average contract |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| period (in years) |  |  | 7.5 |  |  | 3.4 |  |  | 7.2 |  |  | 7.0 |  |  | 7.1
Gross insured contractual payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| outstanding: (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Principal |  | $ | 2,917 |  | $ | 17 |  | $ | 320 |  | $ | 7,031 |  | $ | 10,285
|  | Interest |  |  | 2,795 |  |  | 4 |  |  | 107 |  |  | 2,777 |  |  | 5,683
|  |  | Total |  | $ | 5,712 |  | $ | 21 |  | $ | 427 |  | $ | 9,808 |  | $ | 15,968
Gross Claim Liability (3) |  | $ | - |  | $ | - |  | $ | - |  | $ | 718 |  | $ | 718
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Gross Potential Recoveries |  |  | - |  |  | - |  |  | - |  |  | 770 |  |  | 770
| Discount, net (4) |  |  | - |  |  | - |  |  | - |  |  | (75) |  |  | (75)
Net claim liability (recoverable) |  | $ | - |  | $ | - |  | $ | - |  | $ | 23 |  | $ | 23
Unearned premium revenue |  | $ | 9 |  | $ | - |  | $ | 8 |  | $ | 68 |  | $ | 85
__________ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(1) - An “issue” represents the aggregate of financial guarantee policies that share the same revenue source for purposes of making debt service payments.
(2) - Represents contractual principal and interest payments due by the issuer of the obligations insured by MBIA.
(3) - The gross claim liability with respect to Puerto Rico and Zohar II exposures are net of expected recoveries.
(4) - Represents discount related to Gross Claim Liability and Gross Potential Recoveries.
|  |  |  |  | Surveillance Categories
|  |  |  |  | Caution |  | Caution |  | Caution |  |  |  |  |  |
|  |  |  |  | List |  | List |  | List |  | Classified |  |  |
$ in millions |  | Low |  | Medium |  | High |  | List |  | Total
Number of policies |  |  | 57 |  |  | 18 |  |  | 171 |  |  | 165 |  |  | 411
Number of issues (1) |  |  | 12 |  |  | 6 |  |  | 5 |  |  | 117 |  |  | 140
Remaining weighted average contract |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| period (in years) |  |  | 7.6 |  |  | 6.7 |  |  | 9.6 |  |  | 6.7 |  |  | 7.4
Gross insured contractual payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| outstanding: (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Principal |  | $ | 2,591 |  | $ | 147 |  | $ | 1,996 |  | $ | 6,426 |  | $ | 11,160
|  | Interest |  |  | 2,733 |  |  | 57 |  |  | 1,038 |  |  | 2,419 |  |  | 6,247
|  |  | Total |  | $ | 5,324 |  | $ | 204 |  | $ | 3,034 |  | $ | 8,845 |  | $ | 17,407
Gross Claim Liability (3) |  | $ | - |  | $ | - |  | $ | - |  | $ | 797 |  | $ | 797
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Gross Potential Recoveries |  |  | - |  |  | - |  |  | - |  |  | 752 |  |  | 752
| Discount, net (4) |  |  | - |  |  | - |  |  | - |  |  | 116 |  |  | 116
Net claim liability (recoverable) |  | $ | - |  | $ | - |  | $ | - |  | $ | (71) |  | $ | (71)
Unearned premium revenue |  | $ | 8 |  | $ | 2 |  | $ | 33 |  | $ | 55 |  | $ | 98
__________
(1) - An “issue” represents the aggregate of financial guarantee policies that share the same revenue source for purposes of making debt service payments.
(2) - Represents contractual principal and interest payments due by the issuer of the obligations insured by MBIA.
(3) - The gross claim liability with respect to Puerto Rico and Zohar II exposures are net of expected recoveries.
(4) - Represents discount related to Gross Claim Liability and Gross Potential Recoveries.

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- Definition Tabular disclosure of insured financial obligations with credit deterioration related to the claim liability on financial guarantee insurance contracts as of the end of each annual and interim reporting period detailing, at a minimum, the following for each surveillance category or grouping used to track and monitor the entity's insured financial obligations: (1) number of issued and outstanding financial guarantee insurance contracts; (2) remaining weighted average contract period; (3) insured contractual payments outstanding, segregating principal and interest; (4) gross claim liability; (5) gross potential recoveries; (6) net discount of both the claim liability and potential recoveries; (7) net claim liability; (8) reinsurance recoverable; and (9) unearned premium revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5), (b)(1) -URI http://asc.fasb.org/extlink&oid=6933314&loc=SL5749324-161292 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=34726416&loc=SL5751140-161288 + Details
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