SCHEDULE III SUPPLEMENTARY INSURANCE INFORMATION

12 Months Ended

Dec. 31, 2017

Supplementary Insurance Information [Abstract]

SCHEDULE III SUPPLEMENTARY INSURANCE INFORMATION

WHITE MOUNTAINS INSURANCE GROUP, LTD.

SUPPLEMENTARY INSURANCE INFORMATION ⁽³⁾



Column A	Column B		Column C		Column D		Column E		Column F		Column G		Column H		Column I		Column J		Column K
Millions Segment	Deferred acquisition costs		Future policy benefits, losses, claims and loss expenses		Unearned premiums		Other policy claims and benefits payable		Premiums earned		Net investment income⁽¹⁾		Benefits, claims, losses, and settlement expenses		Amortization of deferred policy acquisition costs		Other operating expenses		Premiums written
Years ended:
December 31, 2017
HG Global/BAM	$	14.8	$	—	$	136.8	$	—	$	9.4	$	12.3	$	—	$	4.0	$	.4	$	63.2
Other operations ⁽²⁾	—		—		—		—		1.0		—		1.1		.1		—		0.9
December 31, 2016
HG Global/BAM	10.6		—		82.9		—		5.9		9.0		—		3.4		.4		38.6
Other operations ⁽²⁾	—		—		—		—		7.5		.2		8.0		2.2		.1		6.5
December 31, 2015
HG Global/BAM	6.9		—		50.2		—		3.3		6.1		—		2.9		.4		25.9
Other operations ⁽²⁾	—		—		—		—		8.7		.2		8.2		3.4		—		10.1

⁽¹⁾ The amounts shown exclude net investment income relating to non-insurance operations of $43.7, $22.9 and $4.6 for the twelve months ended December 31, 2017, 2016 and 2015, respectively.

⁽²⁾The Other operations amounts shown relate to SSIE. White Mountains completed the sale of SSIE on March 7, 2017. See Note 19 — “Held for Sale and Discontinued Operations”.

⁽³⁾Schedule excludes activity related to OneBeacon and Sirius Group for all periods presented. See Note 19 — “Held for Sale and Discontinued Operations”.

Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.