Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill and Intangible Assets

The following table shows the change in goodwill and other intangible assets:

	Three Months Ended September 30,
	2017								2016
Millions	Goodwill		Other intangible assets			Total			Goodwill		Other intangible assets			Total
Beginning balance	$	25.9	$	14.4		$	40.3		$	18.3	$	23.3		$	41.6
Acquisition of businesses	—		—			—			7.6		1.1			8.7
Amortization, including foreign currency translation	—		(2.5		)	(2.5		)	—		(2.6		)	(2.6		)
Ending balance	$	25.9	$	11.9		$	37.8		$	25.9	$	21.8		$	47.7

	Nine Months Ended September 30,
	2017								2016
Millions	Goodwill		Other intangible assets			Total			Goodwill			Other intangible assets			Total
Beginning balance	$	25.9	$	19.3		$	45.2		$	18.6		$	26.9		$	45.5
Add: Amounts held for sale at          beginning of the period(1)	—		—			—			—			.4			.4
Acquisition of businesses						—			7.6			5.0			12.6
Wobi write off	—		—			—			(.3		)	(2.5		)	(2.8		)
Amortization, including foreign currency translation	—		(7.4		)	(7.4		)	—			(8.0		)	(8.0		)
Ending balance	$	25.9	$	11.9		$	37.8		$	25.9		$	21.8		$	47.7

⁽¹⁾ See Note 15 — “Held for Sale and Discontinued Operations”.

Schedule of Intangible Assets and Goodwill

The following table is a summary of goodwill and other intangible assets as of September 30, 2017, December 31, 2016, and September 30, 2016:

Millions	September 30, 2017			December 31, 2016
Goodwill
MediaAlpha	$	18.3		$	18.3
Buzzmove	7.6			7.6
Total goodwill	25.9			25.9
Other intangible assets
MediaAlpha	11.0			18.3
Buzzmove	.9			1.0
Total other intangible assets	11.9			19.3
Total goodwill and other intangible assets	37.8			45.2
Goodwill and other intangible assets held for sale	—			1.2
Goodwill and other intangible assets attributed to non-controlling interests	(13.7		)	(17.1		)
Goodwill and other intangible assets included in White Mountains's common shareholders' equity	$	24.1		$	29.3