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Investments in Unconsolidated Entities | 6 Months Ended
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Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract] |
Investments in Unconsolidated Entities | White Mountains’s investments in unconsolidated entities are included within other long-term investments and consist of investments in common equity securities or similar instruments, which give White Mountains the ability to exert significant influence over the investee’s operating and financial policies (“equity method eligible unconsolidated entities”). Such investments may be accounted for under either the equity method or the fair value option. The following table presents the carrying values of investments in equity method eligible unconsolidated entities recorded within other long-term investments as of June 30, 2019 and December 31, 2018:
Millions |  | June 30, 2019 |  | December 31, 2018
Equity method eligible unconsolidated entities, at fair value |  | $ | 262.2 |  |  | $ | 138.1 |
Investments accounted for under the equity method |  | .7 |  |  | 1.3 |
Total investments in equity method eligible unconsolidated entities |  | 262.9 |  |  | 139.4 |
Other unconsolidated investments (1) |  | 401.5 |  |  | 186.2 |
Total other long-term investments |  | $ | 664.4 |  |  | $ | 325.6 |
(1) Consists of other long-term investments that are not equity method eligible. The following table presents White Mountains’s investments in equity method eligible unconsolidated entities as of June 30, 2019 and December 31, 2018:
|  | Basic Ownership Interest |  |
Investee |  | June 30, 2019 |  | December 31, 2018 |  | Instrument Held
PassportCard/DavidShield (1) |  | 50.0% |  | 50.0% |  | Common shares
MediaAlpha(2) |  | 48.3% |  | n/a |  | Units
durchblicker |  | 45.0% |  | 45.0% |  | Common shares
Elementum Holdings, L.P. |  | 30.0% |  | n/a |  | Limited partnership interest
Compare.com |  | 18.4% |  | 18.4% |  | Common shares
Tuckerman Capital Fund III, L.P. |  | 16.2% |  | 18.5% |  | Limited partnership interest
Kudu (3) |  | n/a |  | 49.5% |  | Units
(1) As of June 30, 2019 and December 31, 2018, White Mountains’s ownership interest in DavidShield comprised a 50.0% direct interest and White Mountains’s ownership interest in PassportCard comprised a 25.0% direct ownership interest and a 25.0% indirect interest through DavidShield. See Note 2 — “Significant Transactions”. (2) As of December 31, 2018, MediaAlpha was a majority-owned consolidated subsidiary of White Mountains. See Note 2 — “Significant Transactions”. (3) As of June 30, 2019 White Mountains consolidates Kudu. See Note 2 — “Significant Transactions”. As a result of the MediaAlpha Transaction, White Mountains reduced its ownership interest in MediaAlpha to 48.3% of the basic units outstanding (42.0% on a fully diluted, fully converted basis). White Mountains’s remaining ownership interest in MediaAlpha no longer meets the criteria for a controlling ownership interest and, accordingly, White Mountains deconsolidated MediaAlpha as of February 26, 2019. Upon deconsolidation, White Mountains’s investment in MediaAlpha met the criteria to be accounted for under the equity method or under the fair value option. White Mountains elected the fair value option and the investment in MediaAlpha was measured at its estimated fair value of $114.7 million as of June 30, 2019, with the change in fair value of $114.7 million reflected within unrealized investment gains. White Mountains’s consolidated statement of comprehensive income and its segment disclosures include MediaAlpha’s results of operations for the period from January 1, 2019 through February 26, 2019. See Note 2 — “Significant Transactions”. For the three months ended June 30, 2019, MediaAlpha’s total revenues, total expenses, and pre-tax income were $89.1 million, $83.3 million, and $5.8 million. For the period from February 26, 2019 to June 30, 2019, MediaAlpha’s total revenues, total expenses, and pre-tax income were $122.7 million, $115.8 million, and $6.9 million. As of June 30, 2019, MediaAlpha’s total assets and total liabilities were $107.4 million and $152.9 million.

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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