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Municipal Bond Guarantee Insurance (Tables) | 6 Months Ended
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Jun. 30, 2021
Guarantees [Abstract] |
Schedule of Municipal Bond Guarantee Insured Obligations | The following table presents a schedule of BAM’s insured obligations as of June 30, 2021 and December 31, 2020:
|  | June 30, 2021 |  | December 31, 2020
Contracts outstanding |  | 11,629 |  |  | 10,997 |
Remaining weighted average contract period outstanding (in years) |  | 10.6 |  | 10.7
Contractual debt service outstanding (in millions): |  |  |  |
Principal |  | $ | 81,574.5 |  |  | $ | 75,287.7 |
Interest |  | 37,871.2 |  |  | 36,448.8 |
Total debt service outstanding |  | $ | 119,445.7 |  |  | $ | 111,736.5 |
Gross unearned insurance premiums (in millions) |  | $ | 250.9 |  |  | $ | 237.5 |
Financial Guarantee Insurance Contracts, Premium Received over Contract Period | The following table presents a schedule of BAM’s future premium revenues as of June 30, 2021:
Millions |  | June 30, 2021
July 1, 2021 - December 31, 2021 |  | $ | 12.1 |
January 1, 2022 - March 31, 2022 |  | 5.9 |
April 1, 2022 - June 30, 2022 |  | 5.8 |
July 1, 2022 - September 30, 2022 |  | 5.8 |
October 1, 2022 - December 31, 2022 |  | 5.7 |
Total 2022 |  | 23.2 |
2023 |  | 21.9 |
2024 |  | 20.3 |
2025 |  | 18.8 |
2026 |  | 17.4 |
2027 and thereafter |  | 137.2 |
Total gross unearned insurance premiums |  | $ | 250.9 |
Schedule of Net Written Premiums | The following table presents a schedule of written premiums and earned premiums included in White Mountains’s HG Global/BAM segment for the three and six months ended June 30, 2021 and 2020:
|  | Three Months Ended June 30, |  |  |  | Six Months Ended June 30,
Millions |  | 2021 |  | 2020 |  |  |  |  |  | 2021 |  | 2020
Written premiums: |  |  |  |  |  |  |  |  |  |  |  |
Direct |  | $ | 13.8 |  |  | $ | 21.3 |  |  |  |  |  |  | $ | 21.8 |  |  | $ | 31.0 |
Assumed |  | — |  |  | .2 |  |  |  |  |  |  | 4.5 |  |  | .2 |
Gross written premiums |  | $ | 13.8 |  |  | $ | 21.5 |  |  |  |  |  |  | $ | 26.3 |  |  | $ | 31.2 |
Earned premiums: |  |  |  |  |  |  |  |  |  |  |  |
Direct |  | $ | 5.6 |  |  | $ | 4.7 |  |  |  |  |  |  | $ | 10.9 |  |  | $ | 9.2 |
Assumed |  | .9 |  |  | .9 |  |  |  |  |  |  | 2.0 |  |  | 1.8 |
Gross earned premiums |  | $ | 6.5 |  |  | $ | 5.6 |  |  |  |  |  |  | $ | 12.9 |  |  | $ | 11.0 |

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- Definition Tabular disclosure of financial guarantee insurance contracts in which premiums are received over the contract period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 + Details
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- Definition Schedule of Net Written Premiums [Table Text Block] + References No definition available. + Details
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