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Non-controlling Interests (Tables) | 6 Months Ended
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Jun. 30, 2019
Noncontrolling Interest [Abstract] |
Non-controlling Interests | The following table presents the balance of non-controlling interests included in White Mountains’s total equity and the related percentage of each consolidated entity’s total equity owned by non-controlling shareholders as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019 |  | December 31, 2018
$ in Millions |  | Non-controlling Percentage |  | Non-controlling Equity |  | Non-controlling Percentage |  | Non-controlling Equity
Non-controlling interests, excluding BAM |  |  |  |  |  |  |  |
HG Global |  | 3.1 | % |  | $ | 14.9 |  |  | 3.1 | % |  | $ | 14.5 |
NSM |  | 3.6 |  |  | 15.1 |  |  | 4.5 |  |  | 13.6 |
Other NSM |  | 13.4 |  |  | .1 |  |  | 13.4 |  |  | .3 |
Kudu |  | 1.0 |  |  | 1.6 |  |  | — |  |  | — |
MediaAlpha |  | — |  |  | — |  |  | 39.0 |  |  | 16.2 |
Other Operations |  | various |  |  | .7 |  |  | various |  |  | 1.1 |
Total, excluding BAM |  |  |  | 32.4 |  |  |  |  | 45.7 |
BAM |  | 100.0 |  |  | (168.8 | ) |  | 100.0 |  |  | (170.6 | )
Total non-controlling interests |  |  |  |  | $ | (136.4 | ) |  |  |  | $ | (124.9 | )

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