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Non-controlling Interest (Tables)
 6 Months Ended
Jun. 30, 2017
Noncontrolling Interest [Abstract]  
Non-controlling Interests
The following table details 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, 2017 and December 31, 2016:
 
 
June 30, 2017
 
December 31, 2016
$ in millions
 
Non-controlling Percentage
 
Non-controlling Equity
 
Non-controlling Percentage
 
Non-controlling Equity
OneBeacon Ltd.
 
24.2
%
 
$
247.0

 
23.9
%
 
$
244.6

 
 


 


 


 


Other, excluding mutuals and reciprocals
 
 
 
 
 
 
 
 
HG Global
 
3.1

 
16.3

 
3.1

 
16.6

MediaAlpha
 
40.0

 
10.1

 
40.0

 
11.7

Buzzmove
 
29.1

 
2.6

 
29.1

 
2.9

Wobi
 
5.0

 
.9

 
5.0

 
.7

Dewar (1)
 
11.4

 
(.4
)
 
18.8

 
3.9

Total other, excluding mutuals and reciprocals
 
 
 
29.5

 
 
 
35.8

Mutuals and reciprocals
 
 
 
 
 
 
 
 
BAM
 
100.0

 
(159.7
)
 
100.0

 
(150.9
)
SSIE
 
—

 
—

 
100.0

 
4.4

Total mutuals and reciprocals
 
 
 
(159.7
)
 
 
 
(146.5
)
Total non-controlling interests
 


 
$
116.8

 
 
 
$
133.9

(1) Dewar is a subsidiary of OneBeacon.