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Equity Method Eligible Investments (Tables) | 12 Months Ended
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Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of equity method eligible investments | The following table presents the ownership interests and carrying values of White Mountains’s equity method eligible investments as of December 31, 2021 and 2020:
|  | December 31, 2021 |  | December 31, 2020
Millions |  | Ownership Interest |  | Carrying Value |  | Ownership Interest |  | Carrying Value
Kudu Participation Contracts (1) |  | 3.2 - 32.0% |  | $ | 669.5 |  |  | 3.2 - 35.0% |  | $ | 400.6 |
Investment in MediaAlpha |  | 28.0 | % |  | 261.6 |  |  | 35.0 | % |  | 802.2 |
PassportCard/DavidShield |  | 53.8 | % |  | 120.0 |  |  | 53.8 | % |  | 95.0 |
Elementum Holdings, L.P. |  | 29.7 | % |  | 45.0 |  |  | 28.9 | % |  | 55.1 |
Other equity method eligible investments, at fair value |  | Under 50.0% |  | 109.3 |  |  | Under 50.0% |  | 132.2 |
Other equity method eligible investments, at fair value |  | 50.0% and over |  | 17.8 |  |  | 50.0% and over |  | 15.2 |
Schedule of significant equity method eligible investments | The following tables present summarized financial information for MediaAlpha as of December 31, 2021 and 2020 for the years ended December 31, 2021, 2020, and 2019:
|  | December 31, |  |
Millions |  | 2021 |  | 2020 |  |
Balance sheet data: |  |  |  |  |  |
Total assets |  | $ | 289.8 |  |  | $ | 210.3 |  |  |
Total liabilities |  | $ | 351.4 |  |  | $ | 315.5 |  |  |
|  | Year Ended December 31, |  |
Millions |  | 2021 |  | 2020 |  | 2019 (1) |  |
Income statement data: |  |  |  |  |  |  |  |
Total revenues |  | $ | 645.3 |  |  | $ | 584.8 |  |  | $ | 408.0 |  |  |
Total expenses |  | $ | 653.8 |  |  | $ | 574.2 |  |  | $ | 390.2 |  |  |
Net income (loss) |  | $ | (8.5) |  |  | $ | 10.6 |  |  | $ | 17.8 |  |  |
(1) For the year ended December 31, 2019, MediaAlpha recorded out of period adjustments that increased (decreased) total revenues by $0.1, total expenses by $1.2 and net income by $(1.1). The adjustments primarily related to MediaAlpha’s accounting for its equity-based compensation and amortization of other intangible assets. White Mountains has evaluated the impact of the adjustments and concluded that they are not material, individually and in the aggregate, to current or prior period financial statements. The following tables present aggregated summarized financial information for White Mountains’s investments in equity method eligible unconsolidated entities, excluding MediaAlpha:
|  | December 31, |  |
Millions |  | 2021 |  | 2020 |  |
Balance sheet data(1): |  |  |  |  |  |
Total assets |  | $ | 1,845.7 |  |  | $ | 1,328.5 |  |  |
Total liabilities |  | $ | 373.4 |  |  | $ | 228.7 |  |  |
(1) Financial data for White Mountains’s equity method eligible investees is generally reported on a one-quarter lag.
|  | Year Ended December 31, |  |
Millions |  | 2021 |  | 2020 |  | 2019 |  |
Income statement data(1): |  |  |  |  |  |  |  |
Total revenues |  | $ | 987.4 |  |  | $ | 526.5 |  |  | $ | 344.6 |  |  |
Total expenses |  | $ | 418.7 |  |  | $ | 325.9 |  |  | $ | 88.3 |  |  |
Net income (loss) |  | $ | 568.7 |  |  | $ | 201.7 |  |  | $ | 255.1 |  |  |
(1) Financial data for White Mountains’s equity method eligible investees is generally reported on a one-quarter lag.

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Disclosure of changes in the investment in unconsolidated affiliates. + References No definition available. + Details
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