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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2013
Segment Reporting [Abstract] |
Summary of Financial Information by Reportable Segment | The following table is a summary of financial information by reportable segment as of and for the three months ended March 31, 2013 and 2012:
Three months ended March 31, |  | Financial Guarantee |  |  | Financial Services |  |  | Corporate and Other |  |  | Intersegment Eliminations |  |  | Total Consolidated |
2013: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers |  | $ | 250,793 |  |  | $ | 40,605 |  |  | $ | 29 |  |  | $ | — |  |  | $ | 291,427 |
Intersegment |  |  | 726 |  |  |  | (684 | ) |  |  | — |  |  |  | (42 | ) |  |  | — |
Total revenues |  | $ | 251,519 |  |  | $ | 39,921 |  |  | $ | 29 |  |  | ($ | 42 | ) |  | $ | 291,427 |
Pre-tax loss from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers |  | $ | 246,700 |  |  | $ | 38,847 |  |  | ($ | 2,638 | ) |  | $ | — |  |  | $ | 282,909 |
Intersegment |  |  | (72 | ) |  |  | (849 | ) |  |  | 921 |  |  |  | — |  |  |  | — |
Pre-tax loss from continuing operations |  | $ | 246,628 |  |  | $ | 37,998 |  |  | ($ | 1,717 | ) |  | $ | — |  |  | $ | 282,909 |
Total assets |  | $ | 25,573,998 |  |  | $ | 558,593 |  |  | $ | 32,069 |  |  | $ | — |  |  | $ | 26,164,660 |
2012: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers |  | $ | 269,827 |  |  | $ | 54,252 |  |  | $ | 57 |  |  | $ | — |  |  | $ | 324,136 |
Intersegment |  |  | 1,499 |  |  |  | (1,443 | ) |  |  | 645 |  |  |  | (701 | ) |  |  | — |
Total revenues |  | $ | 271,326 |  |  | $ | 52,809 |  |  | $ | 702 |  |  | $ | (701 | ) |  | $ | 324,136 |
Pre-tax loss from continuing operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaffiliated customers |  | $ | 206,287 |  |  | $ | 51,670 |  |  | $ | (4,335 | ) |  | $ | — |  |  | $ | 253,622 |
Intersegment |  |  | 1,027 |  |  |  | (1,355 | ) |  |  | 328 |  |  |  | — |  |  |  | — |
Pre-tax loss from continuing operations |  | $ | 207,314 |  |  | $ | 50,315 |  |  | $ | (4,007 | ) |  | $ | — |  |  | $ | 253,622 |
Total assets |  | $ | 26,183,305 |  |  | $ | 1,146,877 |  |  | $ | 42,702 |  |  | $ | — |  |  | $ | 27,372,884 |
Schedule of Gross Premiums Written, Net Premiums Earned and Net Change in Fair Value of Credit Derivatives | The following tables summarize 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 three months ended March 31, 2013 and 2012:
Three months ended March 31, |  | Gross Premiums Written |  |  | Net Premiums Earned |  |  | Net change in fair value of credit derivatives |
2013 |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | (8,716 | ) |  | $ | 81,057 |  |  | $ | 16,530 |
United Kingdom |  |  | 8,507 |  |  |  | 13,754 |  |  |  | (2,175 | )
Other international |  |  | (3,321 | ) |  |  | 5,445 |  |  |  | (1,568 | )
Total |  | ($ | 3,530 | ) |  | $ | 100,256 |  |  | $ | 12,787 |
2012 |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | (92,724 | ) |  | $ | 72,985 |  |  | $ | (3,451 | )
United Kingdom |  |  | 6,414 |  |  |  | 15,041 |  |  |  | (3,624 | )
Other international |  |  | (6,284 | ) |  |  | 6,924 |  |  |  | (147 | )
Total |  | $ | (92,594 | ) |  | $ | 94,950 |  |  | $ | (7,222 | )

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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 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: 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 3: 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 4: 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. Reference 5: 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 6: 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 + Details
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