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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2013
Segment Reporting [Abstract] |
Summary of Financial Information by Reportable Segment | The following table is a summary of financial information by reportable segment for the affected periods:
Successor Ambac – Period from May 1 through June 30, 2013 |  | Financial Guarantee |  |  | Financial Services |  |  | Corporate and Other |  |  | Inter-segment Eliminations |  |  | Consolidated |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 160,275 |  |  | $ | 82,490 |  |  | $ | 20 |  |  | $ | — |  |  | $ | 242,785 |
Inter-segment |  |  | 399 |  |  |  | (374 | ) |  |  | 5,425 |  |  |  | (5,450 | ) |  |  | — |
Total revenues |  | $ | 160,674 |  |  | $ | 82,116 |  |  | $ | 5,445 |  |  | $ | (5,450 | ) |  | $ | 242,785 |
Pre-tax income (loss) from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) (2) (3) |  | $ | 124,890 |  |  | $ | 81,692 |  |  | $ | (787 | ) |  | $ | — |  |  | $ | 205,795 |
Inter-segment |  |  | (5,497 | ) |  |  | (523 | ) |  |  | 6,020 |  |  |  | — |  |  |  | — |
Pre-tax income (loss) from continuing operations |  | $ | 119,393 |  |  | $ | 81,169 |  |  | $ | 5,233 |  |  | $ | — |  |  | $ | 205,795 |
Total assets as of June 30, 2013 |  | $ | 26,934,044 |  |  | $ | 486,346 |  |  | $ | 54,977 |  |  | $ | — |  |  | $ | 27,475,367 |
Net investment income |  | $ | 26,385 |  |  | $ | 158 |  |  | $ | 23 |  |  | $ | — |  |  | $ | 26,566 |
Insurance intangible amortization |  | $ | 24,952 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 24,952 |
Interest expense |  | $ | 20,776 |  |  | $ | 368 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,144 |
Reorganization items (4) |  | $ | — |  |  | $ | — |  |  | $ | 424 |  |  | $ | — |  |  | $ | 424 |
Predecessor Ambac – Period from April 1 through April 30, 2013 |  | Financial Guarantee (3) |  |  | Financial Services |  |  | Corporate and Other |  |  | Inter-segment Eliminations |  |  | Consolidated |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 382,957 |  |  | $ | (33,266 | ) |  | $ | 10 |  |  | $ | — |  |  | $ | 349,701 |
Inter-segment |  |  | 214 |  |  |  | (198 | ) |  |  | 197,055 |  |  |  | (197,071 | ) |  |  | — |
Total revenues |  | $ | 383,171 |  |  | $ | (33,464 | ) |  | $ | 197,065 |  |  | $ | (197,071 | ) |  | $ | 349,701 |
Pre-tax income (loss) from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) (2) |  | $ | 1,583,465 |  |  | $ | (35,614 | ) |  | $ | 1,517,273 |  |  | $ | — |  |  | $ | 3,065,124 |
Inter-segment |  |  | (197,115 | ) |  |  | (252 | ) |  |  | 197,367 |  |  | $ | — |  |  |  | — |
Pre-tax income (loss) from continuing operations |  | $ | 1,386,350 |  |  | $ | (35,866 | ) |  | $ | 1,714,640 |  |  | $ | — |  |  | $ | 3,065,124 |
Total assets as of April 30, 2013 |  | $ | 28,287,321 |  |  | $ | 536,711 |  |  | $ | 29,403 |  |  | $ | — |  |  | $ | 28,853,435 |
Net investment income |  | $ | 32,040 |  |  | $ | 361 |  |  | $ | 10 |  |  | $ | — |  |  | $ | 32,411 |
Interest expense |  | $ | 7,542 |  |  | $ | 318 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,860 |
Reorganization items (4) |  | $ | (1,231,550 | ) |  | $ | 1,505 |  |  | $ | (1,517,194 | ) |  | $ | — |  |  | $ | (2,747,239 | )
Predecessor Ambac – Period from January 1 through April 30, 2013 |  | Financial Guarantee |  |  | Financial Services |  |  | Corporate and Other |  |  | Inter-segment Eliminations |  |  | Consolidated |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 633,750 |  |  | $ | 7,339 |  |  | $ | 39 |  |  | $ | — |  |  | $ | 641,128 |
Inter-segment |  |  | 940 |  |  |  | (882 | ) |  | $ | 197,055 |  |  |  | (197,113 | ) |  |  | — |
Total revenues |  | $ | 634,690 |  |  | $ | 6,457 |  |  | $ | 197,094 |  |  | $ | (197,113 | ) |  | $ | 641,128 |
Pre-tax income (loss) from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) (2) |  | $ | 1,830,165 |  |  | $ | 3,233 |  |  | $ | 1,514,635 |  |  | $ | — |  |  | $ | 3,348,033 |
Inter-segment |  |  | (197,187 | ) |  |  | (1,101 | ) |  |  | 198,288 |  |  | $ | — |  |  |  | — |
Pre-tax income (loss) from continuing operations |  | $ | 1,632,978 |  |  | $ | 2,132 |  |  | $ | 1,712,923 |  |  | $ | — |  |  | $ | 3,348,033 |
Total assets as of April 30, 2013 |  | $ | 28,287,321 |  |  | $ | 536,711 |  |  | $ | 29,403 |  |  | $ | — |  |  | $ | 28,853,435 |
Net investment income |  | $ | 115,869 |  |  | $ | 1,572 |  |  | $ | 39 |  |  | $ | — |  |  | $ | 117,480 |
Interest expense |  | $ | 29,718 |  |  | $ | 1,307 |  |  | $ | — |  |  | $ | — |  |  | $ | 31,025 |
Reorganization items (4) |  | $ | (1,231,550 | ) |  | $ | 1,505 |  |  | $ | (1,515,135 | ) |  | $ | — |  |  | $ | (2,745,180 | )
Predecessor Ambac – Three months ended June 30, 2012 |  | Financial Guarantee |  |  | Financial Services |  |  | Corporate and Other |  |  | Inter-segment Eliminations |  |  | Consolidated |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 87,665 |  |  | $ | (93,682 | ) |  | $ | 56 |  |  | $ | — |  |  | $ | (5,961 | )
Inter-segment |  |  | 1,397 |  |  |  | (1,346 | ) |  |  | — |  |  |  | (51 | ) |  |  | — |
Total revenues |  | $ | 89,062 |  |  | $ | (95,028 | ) |  | $ | 56 |  |  | $ | (51 | ) |  | $ | (5,961 | )
Pre-tax loss from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) (2) |  | $ | (717,187 | ) |  | $ | (96,257 | ) |  | $ | (117 | ) |  | $ | — |  |  | $ | (813,561 | )
Inter-segment |  |  | (712 | ) |  |  | (429 | ) |  |  | 1,141 |  |  |  | — |  |  |  | — |
Pre-tax loss from continuing operations |  | $ | (717,899 | ) |  | $ | (96,686 | ) |  | $ | 1,024 |  |  | $ | — |  |  | $ | (813,561 | )
Total assets as of June 30, 2012 |  | $ | 25,771,887 |  |  | $ | 800,677 |  |  | $ | 39,227 |  |  | $ | — |  |  | $ | 26,611,791 |
Net investment income |  | $ | 89,953 |  |  | $ | 3,826 |  |  | $ | 57 |  |  | $ | — |  |  | $ | 93,836 |
Interest expense |  | $ | 30,205 |  |  | $ | 1,650 |  |  | $ | — |  |  | $ | — |  |  | $ | 31,855 |
Reorganization items (4) |  | $ | — |  |  | $ | — |  |  | $ | 767 |  |  | $ | — |  |  | $ | 767 |
Predecessor Ambac – Six months ended June 30, 2012 |  | Financial Guarantee |  |  | Financial Services |  |  | Corporate and Other |  |  | Inter-segment Eliminations |  |  | Consolidated |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) |  | $ | 357,492 |  |  | $ | (39,430 | ) |  | $ | 113 |  |  | $ | — |  |  | $ | 318,175 |
Inter-segment |  |  | 2,896 |  |  |  | (2,789 | ) |  |  | 645 |  |  |  | (752 | ) |  |  | — |
Total revenues |  | $ | 360,388 |  |  | $ | (42,219 | ) |  | $ | 758 |  |  | $ | (752 | ) |  | $ | 318,175 |
Pre-tax loss from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers (1) (2) |  | $ | (510,900 | ) |  | $ | (44,587 | ) |  | $ | (4,452 | ) |  | $ | — |  |  | $ | (559,939 | )
Inter-segment |  |  | 315 |  |  |  | (1,784 | ) |  |  | 1,469 |  |  |  | — |  |  |  | — |
Pre-tax loss from continuing operations |  | $ | (510,585 | ) |  | $ | (46,371 | ) |  | $ | (2,983 | ) |  | $ | — |  |  | $ | (559,939 | )
Total assets as of June 30, 2012 |  | $ | 25,771,887 |  |  | $ | 800,677 |  |  | $ | 39,227 |  |  | $ | — |  |  | $ | 26,611,791 |
Net investment income |  | $ | 195,214 |  |  | $ | 10,625 |  |  | $ | 114 |  |  | $ | — |  |  | $ | 205,953 |
Interest expense |  | $ | 62,254 |  |  | $ | 3,440 |  |  | $ | — |  |  | $ | — |  |  | $ | 65,694 |
Reorganization items (4) |  | $ | — |  |  | $ | — |  |  | $ | 3,228 |  |  | $ | — |  |  | $ | 3,228 |
(1) | Included in both revenues from unaffiliated customers and in pre-tax income (loss) from continuing operations from unaffiliated customers is net investment income.
(2) | Included in pre-tax income (loss) from continuing operations from unaffiliated customers is interest expense.
(3) | Included in pre-tax income from continuing operations from unaffiliated customers is amortization of intangible asset arising from financial guarantee contracts that were set to fair value upon adoption of Fresh Start. See “Note 7: Financial Guarantee Insurance Contracts,” for additional information.
(4) | Refer to Note 2: Fresh Start Financial Statement Reporting, for a further discussion of Reorganization items.
Schedule of Gross Premiums Written, Net Premiums Earned and Net Change in Fair Value of Credit Derivatives | The following table summarizes gross premiums written, net premiums earned and the net change in fair value of credit derivatives included in the Financial Guarantee segment by location of risk for the affected periods:
|  | Successor Ambac – Period from May 1 through June 30, 2013 |  |  |  |  |  |  | Predecessor Ambac – Period from April 1 through April 30, 2013 |  |  | Predecessor Ambac – Three Months Ended June 30, 2012 |
|  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change In Fair Value Of Credit Derivatives |  |  |  |  |  |  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change In Fair Value Of Credit Derivatives |  |  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change in Fair Value of Credit Derivatives |
United States |  | $ | (24,493 | ) |  | $ | 46,340 |  |  | $ | 14,948 |  |  |  |  |  |  | $ | (7,386 | ) |  | $ | 23,537 |  |  | $ | (47,664 | ) |  | $ | (31,936 | ) |  | $ | 70,555 |  |  | $ | (4,816 | )
United Kingdom |  |  | (1,917 | ) |  |  | 8,840 |  |  |  | 2,113 |  |  |  |  |  |  |  | 2,167 |  |  |  | 4,317 |  |  |  | (3,686 | ) |  |  | 5,971 |  |  |  | 25,551 |  |  |  | (813 | )
Other international |  |  | (7,671 | ) |  |  | 2,859 |  |  |  | 34,159 |  |  |  |  |  |  |  | (5,376 | ) |  |  | 1,890 |  |  |  | (21,821 | ) |  |  | (1,908 | ) |  |  | 6,936 |  |  |  | (1,786 | )
Total |  | $ | (34,081 | ) |  | $ | 58,039 |  |  | $ | 51,220 |  |  |  |  |  |  | $ | (10,595 | ) |  | $ | 29,744 |  |  | $ | (73,171 | ) |  | $ | (27,873 | ) |  | $ | 103,042 |  |  | $ | (7,415 | )
|  | Successor Ambac – Period from May 1 through June 30, 2013 |  |  |  |  |  |  | Predecessor Ambac – Period from January 1 through April 30, 2013 |  |  | Predecessor Ambac – Six Months Ended June 30, 2012 |
|  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change In Fair Value Of Credit Derivatives |  |  |  |  |  |  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change In Fair Value Of Credit Derivatives |  |  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net Change in Fair Value of Credit Derivatives |
United States |  | $ | (24,493 | ) |  | $ | 46,340 |  |  | $ | 14,948 |  |  |  |  |  |  | $ | (16,102 | ) |  | $ | 104,594 |  |  | $ | (31,134 | ) |  | $ | (124,661 | ) |  | $ | 143,541 |  |  | $ | (8,267 | )
United Kingdom |  |  | (1,917 | ) |  |  | 8,840 |  |  |  | 2,113 |  |  |  |  |  |  |  | 10,673 |  |  |  | 18,071 |  |  |  | (5,861 | ) |  |  | 12,385 |  |  |  | 40,592 |  |  |  | (4,437 | )
Other international |  |  | (7,671 | ) |  |  | 2,859 |  |  |  | 34,159 |  |  |  |  |  |  |  | (8,696 | ) |  |  | 7,335 |  |  |  | (23,389 | ) |  |  | (8,191 | ) |  |  | 13,859 |  |  |  | (1,933 | )
Total |  | $ | (34,081 | ) |  | $ | 58,039 |  |  | $ | 51,220 |  |  |  |  |  |  | $ | (14,125 | ) |  | $ | 130,000 |  |  | $ | (60,384 | ) |  | $ | (120,467 | ) |  | $ | 197,992 |  |  | $ | (14,637 | )

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- Definition Schedule of Gross Premiums Written, Net Premiums Earned and Net Change in Fair Value of Credit Derivatives by Location of Risk. + References No definition available. + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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