Investments in Unconsolidated Affiliates (Tables)

12 Months Ended

Dec. 31, 2016

Investments in and Advances to Affiliates [Line Items]

Schedule of investments in unconsolidated affiliates

White Mountains’s investments in unconsolidated affiliates represent investments in other companies in which White Mountains has a significant voting and economic interest but does not control the entity.

Schedule of changes in unconsolidated affiliates

The following table summarizes amounts recorded by White Mountains under the equity method relating to its investment in Symetra through November 5, 2015:



Millions
Equity method carrying value of investment in Symetra as of December 31, 2014 ⁽¹⁾	$	411.4
Equity in earnings ^(2)(3)(4)	25.1
Equity in net unrealized investment losses from Symetra’s fixed maturity portfolio ⁽⁵⁾⁽⁶⁾	(39.2		)
Distribution from Prospector Offshore Fund ⁽⁷⁾	12.4
Dividends received	(16.9		)
Equity method carrying value of investment in Symetra as of November 5, 2015⁽¹⁾⁽⁸⁾	$	392.8


⁽¹⁾	Includes White Mountains’s equity in net unrealized investment (losses) gains from Symetra’s fixed maturity portfolio of $(1.6) and $37.6, as of November 5, 2015 and December 31, 2014, which excludes tax benefit (expense) of $0.2 and $(2.7).


⁽²⁾	Equity in earnings for the period ended November 5, 2015 excludes tax expense of $1.6.


⁽³⁾	Equity in earnings for the period ended November 5, 2015 includes an increase of $2.3 relating to the pre-tax amortization of the Symetra common share basis difference.


⁽⁴⁾	Equity in earnings for the period ended November 5, 2015 includes losses of $(0.1) from the dilutive effect of Symetra’s yearly dividend and the issuance of restricted shares by Symetra


⁽⁵⁾	Net unrealized investment losses for the period ended November 5, 2015 includes an increase of $9.4 relating to the pre-tax amortization of the Symetra common share basis difference.


⁽⁶⁾	Net unrealized investment losses from Symetra’s fixed maturity portfolio excludes a tax benefit of $2.9 for the period ended November 5, 2015.


⁽⁷⁾	During 2015, pursuant to the redemption of White Mountains's investments in the Prospector Funds, 513,500 common shares of Symetra were distributed to White Mountains.


⁽⁸⁾	The aggregate value of White Mountains’s investment in common shares of Symetra was $651.2 based upon the quoted market price of $31.67 per share as of November 5, 2015.

Symetra

Investments in and Advances to Affiliates [Line Items]

Summarized statement of financial position of Symetra

The following table summarizes financial information for Symetra as of September 30, 2015:



	September 30,
Millions	2015
Symetra balance sheet data:
Total investments	$	32,409.2
Separate account assets	885.9
Total assets	34,962.8
Policyholder liabilities	29,492.0
Long-term debt	697.5
Separate account liabilities	885.9
Total liabilities	31,836.7
Common shareholders’ equity	3,126.1

The following table summarizes financial information for Symetra for the nine months ended September 30, 2015 and year ended December 31, 2014:



	Nine months ended September 30,			Year ended December 31,
Millions	2015			2014
Symetra income statement data:
Net premiums earned	$	539.3		$	629.1
Net investment income	994.3			1,320.5
Total revenues	1,605.9			2,182.4
Policy benefits	1,143.7			1,399.7
Total expenses	1,543.6			1,882.5
Net income	89.6			254.4
Comprehensive net (loss) income	(234.1		)	397.0