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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2013
Summary of Gross Fair Values of Individual Derivative Instruments | The following tables summarize the gross fair values of individual derivative instruments and the impact of legal rights of offset as reported in the Consolidated Balance Sheets as of December 31, 2013 and December 31, 2012.
|  | Gross Amounts of Recognized Assets / Liabilities |  |  | Gross Amounts Offset in the Consolidated Balance Sheet |  |  | Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheet |  |  | Gross Amount of Collateral Received / Pledged Not Offset in the Consolidated Balance Sheet |  |  | Net Amount |
Successor Ambac—December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 132,250 |  |  | $ | 56,876 |  |  | $ | 75,374 |  |  | $ | — |  |  | $ | 75,374 |
Futures contracts |  |  | 2,337 |  |  |  | — |  |  |  | 2,337 |  |  |  | 690 |  |  |  | 1,647 |
Total non-VIE derivative assets |  | $ | 134,587 |  |  | $ | 56,876 |  |  | $ | 77,711 |  |  | $ | 690 |  |  | $ | 77,021 |
Derivative Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit derivatives |  | $ | 94,322 |  |  | $ | — |  |  | $ | 94,322 |  |  | $ | — |  |  | $ | 94,322 |
Interest rate swaps |  |  | 216,287 |  |  |  | 56,876 |  |  |  | 159,411 |  |  |  | 42,555 |  |  |  | 116,856 |
Other contracts |  |  | 165 |  |  |  | — |  |  |  | 165 |  |  |  | — |  |  |  | 165 |
Total non-VIE derivative liabilities |  | $ | 310,774 |  |  | $ | 56,876 |  |  | $ | 253,898 |  |  | $ | 42,555 |  |  | $ | 211,343 |
Variable Interest Entities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 1,680,834 |  |  | $ | — |  |  | $ | 1,680,834 |  |  | $ | — |  |  | $ | 1,680,834 |
Currency swaps |  |  | 91,472 |  |  |  | — |  |  |  | 91,472 |  |  |  | — |  |  |  | 91,472 |
Total VIE derivative liabilities |  | $ | 1,772,306 |  |  | $ | — |  |  | $ | 1,772,306 |  |  | $ | — |  |  | $ | 1,722,306 |
|  | Gross Amounts of Recognized Assets / Liabilities |  |  | Gross Amounts Offset in the Consolidated Balance Sheet |  |  | Net Amounts of Assets / Liabilities Presented in the Consolidated Balance Sheet |  |  | Gross Amount of Collateral Received / Pledged Not Offset in the Consolidated Balance Sheet |  |  | Net Amount |
Predecessor Ambac—December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 198,117 |  |  | $ | 73,264 |  |  | $ | 124,853 |  |  | $ | — |  |  | $ | 124,853 |
Futures contracts |  |  | 1,253 |  |  |  | — |  |  |  | 1,253 |  |  |  | — |  |  |  | 1,253 |
Total non-VIE derivative assets |  | $ | 199,370 |  |  | $ | 73,264 |  |  | $ | 126,106 |  |  | $ | — |  |  | $ | 126,106 |
Derivative Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit derivatives |  | $ | 213,585 |  |  | $ | — |  |  | $ | 213,585 |  |  | $ | — |  |  | $ | 213,585 |
Interest rate swaps |  |  | 390,774 |  |  |  | 73,264 |  |  |  | 317,510 |  |  |  | 180,113 |  |  |  | 137,397 |
Other contracts |  |  | 220 |  |  |  | — |  |  |  | 220 |  |  |  | — |  |  |  | 220 |
Total non-VIE derivative liabilities |  | $ | 604,579 |  |  | $ | 73,264 |  |  | $ | 531,315 |  |  | $ | 180,113 |  |  | $ | 351,202 |
Variable Interest Entities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 2,131,315 |  |  | $ | — |  |  | $ | 2,131,315 |  |  | $ | — |  |  | $ | 2,131,315 |
Currency swaps |  |  | 90,466 |  |  |  | — |  |  |  | 90,466 |  |  |  | — |  |  |  | 90,466 |
Total VIE derivative liabilities |  | $ | 2,221,781 |  |  | $ | — |  |  | $ | 2,221,781 |  |  | $ | — |  |  | $ | 2,221,781 |
Summary of Location and Amount of Gains and Losses of Derivative Contracts |
|  | Location of Gain or (Loss) Recognized in Consolidated Statement of Total Comprehensive Income |  | Successor Ambac |  |  | Predecessor Ambac |
|  | Amount of Gain or (Loss) Recognized in Consolidated Statement of Total Comprehensive Income – Eight Months Ended December 31, 2013 |  |  | Amount of Gain or (Loss) Recognized in Consolidated Statement of Total Comprehensive Income – Four Months Ended April 30, 2013 |  |  | Amount of Gain or (Loss) Recognized in Consolidated Statement of Total Comprehensive Income – Year Ended December 31, 2012 |
Financial Guarantee: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit derivatives |  | Net change in fair value of credit derivatives |  | $ | 192,869 |  |  | $ | (60,384 | ) |  | $ | (9,219 | )
Financial Services derivatives products: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | Derivative products |  |  | 104,114 |  |  |  | (30,622 | ) |  |  | (111,396 | )
Currency swaps |  | Derivative products |  |  | — |  |  |  | — |  |  |  | 807 |
Futures contracts |  | Derivative products |  |  | 10,925 |  |  |  | (3,133 | ) |  |  | (14,864 | )
Other derivatives |  | Derivative products |  |  | (268 | ) |  |  | 20 |  |  |  | 449 |
Total Financial Services derivative products |  |  |  |  | 114,771 |  |  |  | (33,735 | ) |  |  | (125,004 | )
Call options on long-term debt |  | Other income |  |  | — |  |  |  | — |  |  |  | 100,710 |
Variable Interest Entities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Currency swaps |  | (Loss) income on variable interest entities |  |  | (890 | ) |  |  | (116 | ) |  |  | (27,388 | )
Interest rate swaps |  | (Loss) income on variable interest entities |  |  | 495,712 |  |  |  | (203,620 | ) |  |  | (107,341 | )
Total Variable Interest Entities |  |  |  |  | 494,822 |  |  |  | (203,736 | ) |  |  | (134,729 | )
Total derivative contracts |  |  |  | $ | 802,462 |  |  | $ | (297,855 | ) |  | $ | (168,242 | )
Summary of Gross Principal Notional Outstanding for CDS Contracts | The following tables summarize the gross principal notional outstanding for CDS contracts, by Ambac rating, for each major category as of December 31, 2013 and December 31, 2012: Successor Ambac—December 31, 2013
Ambac Rating |  | CLO |  |  | Other |  |  | Total |
AAA |  | $ | — |  |  | $ | 24,034 |  |  | $ | 24,034 |
AA |  |  | 1,209,071 |  |  |  | 203,025 |  |  |  | 1,412,096 |
A |  |  | 128,666 |  |  |  | 107,251 |  |  |  | 235,917 |
BBB(1) |  |  | — |  |  |  | 826,175 |  |  |  | 826,175 |
Below investment grade(2) |  |  | — |  |  |  | 277,881 |  |  |  | 277,881 |
|  | $ | 1,337,737 |  |  | $ | 1,438,366 |  |  | $ | 2,776,103 |
Predecessor Ambac—December 31, 2012
Ambac Rating |  | CLO |  |  | Other |  |  | Total |
AAA |  | $ | 166,200 |  |  | $ | 512,283 |  |  | $ | 678,483 |
AA |  |  | 4,676,362 |  |  |  | 1,278,756 |  |  |  | 5,955,118 |
A |  |  | 1,313,205 |  |  |  | 2,370,988 |  |  |  | 3,684,193 |
BBB(1) |  |  | — |  |  |  | 672,293 |  |  |  | 672,293 |
Below investment grade(2) |  |  | — |  |  |  | 291,690 |  |  |  | 291,690 |
|  | $ | 6,155,767 |  |  | $ | 5,126,010 |  |  | $ | 11,281,777 |
(1) | BBB internal rating reflects bonds which are of medium grade credit quality with adequate capacity to pay interest and repay principal. Certain protective elements and margins may weaken under adverse economic conditions and changing circumstances. These bonds are more likely than higher rated bonds to exhibit unreliable protection levels over all cycles.
(2) | Below investment grade (“BIG”) internal ratings reflect bonds which are of speculative grade credit quality with the adequacy of future margin levels for payment of interest and repayment of principal potentially adversely affected by major ongoing uncertainties or exposure to adverse conditions.
Summarize Information by Major Category of CDS Contracts | The tables below summarize information by major category as of December 31, 2013 and December 31, 2012: Successor Ambac—December 31, 2013
|  | CLO |  |  | Other |  |  | Total |
Number of CDS transactions |  |  | 7 |  |  |  | 13 |  |  |  | 20 |
Remaining expected weighted-average life of obligations (in years) |  |  | 2.1 |  |  |  | 5.0 |  |  |  | 3.6 |
Gross principal notional outstanding |  | $ | 1,337,737 |  |  | $ | 1,438,366 |  |  | $ | 2,776,103 |
Net derivative liabilities at fair value |  | $ | (7,993 | ) |  | $ | (86,329 | ) |  | $ | (94,322 | )
Predecessor Ambac—December 31, 2012
|  | CLO |  |  | Other |  |  | Total |
Number of CDS transactions |  |  | 30 |  |  |  | 21 |  |  |  | 51 |
Remaining expected weighted-average life of obligations (in years) |  |  | 2.2 |  |  |  | 5.2 |  |  |  | 3.6 |
Gross principal notional outstanding |  | $ | 6,155,767 |  |  | $ | 5,126,010 |  |  | $ | 11,281,777 |
Net derivative liabilities at fair value |  | $ | (34,645 | ) |  | $ | (178,940 | ) |  | $ | (213,585 | )
Summary of Notional Amounts of AFS's Trading Derivative Products | As of December 31, 2013 and December 31, 2012 the notional amounts of AFS’s trading derivative products are as follows:
|  | Notional |
Type of derivative |  | Successor Ambac – December 31, 2013 |  |  | Predecessor Ambac – December 31, 2012 |
Interest rate swaps—receive-fixed/pay-variable |  | $ | 697,837 |  |  | $ | 727,926 |
Interest rate swaps—pay-fixed/receive-variable |  |  | 1,540,976 |  |  |  | 1,657,382 |
Interest rate swaps—basis swaps |  |  | 146,705 |  |  |  | 161,690 |
Futures contracts |  |  | 100,000 |  |  |  | 161,500 |
Other contracts |  |  | 75,650 |  |  |  | 75,651 |
Variable Interest Entities [Member] |
Summary of Notional Amounts of AFS's Trading Derivative Products | The notional for VIE derivatives outstanding as of December 31, 2013 and December 31, 2012 are as follows:
Type of VIE derivative |  | Notional |
| Successor Ambac – December 31, 2013 |  |  | Predecessor Ambac – December 31, 2012 |
Interest rate swaps—receive-fixed/pay-variable |  | $ | 1,818,118 |  |  | $ | 1,782,999 |
Interest rate swaps—pay-fixed/receive-variable |  |  | 3,350,714 |  |  |  | 4,707,454 |
Currency swaps |  |  | 770,319 |  |  |  | 755,438 |
Credit derivatives |  |  | 20,130 |  |  |  | 20,885 |

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- Definition Schedule that discloses the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References No definition available. + Details
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- Definition Schedule of information by major category of credit derivatives contracts. + References No definition available. + Details
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- Definition Tabular disclosure of credit derivatives which includes information by sellers of credit derivatives, about each credit derivative, or each group of similar credit derivatives, including (a) the nature of the credit derivative - its term, how it arose, the events or circumstances that would require the seller to perform under the credit derivative, and the current status of the payment/performance risk of the credit derivative; (b) the maximum potential amount of future payments (undiscounted) the seller could be required to make under the credit derivative; (c) the current fair value of the credit derivative; and (d) the nature of any recourse provisions under the credit derivative, and any assets held either as collateral or by third parties. A credit derivative is a derivative instrument (1) in which one or more of its underlyings are related to the credit risk of a specified entity (or a group of entities) or an index based on the credit risk of a group of entities and (2) that exposes the seller to potential loss from credit-risk-related events specified in the contract. Examples of credit derivatives within the scope of this paragraph include, but are not limited to, credit default swaps, credit spread options, and credit index products; also includes a hybrid instrument that has an embedded credit derivative (for example, but not limited to, a credit-linked note). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Credit Derivative -URI http://asc.fasb.org/extlink&oid=6854095 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708775-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708773-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4L -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5708777-113959 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 + Details
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- Definition Tabular disclosure for other derivative instruments not designated as hedging instruments of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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