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Held for Sale | 12 Months Ended
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Dec. 31, 2025
Discontinued Operations and Disposal Groups [Abstract] |
Held for Sale | Held for Sale On December 5, 2025, White Mountains completed the Bamboo Sale Transaction. See Note 2 — “Significant Transactions” on page F-19. As a result, the Bamboo Group’s assets and liabilities have been presented as held for sale as of December 31, 2024. The following table summarizes the Bamboo Group’s assets and liabilities classified as held for sale as of December 31, 2024:
Millions |  |  |  | December 31, 2024
Assets held for sale |  |  |  |
Fixed maturity investments, at fair value |  |  |  | $ | 40.7 |
Short-term investments, at fair value |  |  |  | 17.3 |
Total investments |  |  |  | 58.0 |
Cash (restricted $59.5) |  |  |  | 74.5 |
Premiums, commissions and fees receivable |  |  |  | 70.0 |
Goodwill and other intangible assets |  |  |  | 355.0 |
Other assets |  |  |  | 28.2 |
Total assets held for sale |  |  |  | 585.7 |
Liabilities held for sale |  |  |  |
Loss and loss adjustment expense reserves |  |  |  | 17.8 |
Unearned insurance premiums |  |  |  | 31.5 |
Premiums and commissions payable |  |  |  | 88.1 |
Other liabilities |  |  |  | 30.3 |
Total liabilities held for sale |  |  |  | 167.7 |
Net assets held for sale |  |  |  | $ | 418.0 |
In addition, White Mountains reported assets and liabilities held for sale related to the pending sale of an Other Operating Business. As of December 31, 2025 and 2024, amounts held for sale related to this Other Operating Business included $5.0 million and $6.5 million of short-term investments, cash and other assets, as well as $3.6 million and $5.9 million of other liabilities.

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- Definition The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/205-20/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent + Details
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