Business Combinations (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of purchase consideration allocation for acquisitions

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition dates (in millions):



	2017		2016
	Cyphort		AppFormix			Aurrion		BTI ⁽¹⁾
Net tangible assets acquired/(liabilities) assumed	$	1.4	$	(5.3	)	$	6.0	$	(19.7	)
Intangible assets	15.4		20.3			49.0		43.3
Goodwill ⁽²⁾	16.7		32.9			46.9		20.2
Total	$	33.5	$	47.9		$	101.9	$	43.8

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⁽¹⁾	See Note 7, Goodwill and Purchased Intangible Assets, for adjustments made during the measurement period subsequent to the acquisition dates.


⁽²⁾	The goodwill recognized for these acquisitions was primarily attributable to expected synergies and is not deductible for U.S. federal income tax purposes.

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination

The following table summarizes the fair value of the separately identifiable intangible assets at the time of acquisition and the period over which each intangible asset will be amortized (in millions, except years):



	2017			2016
	Cyphort			AppFormix			Aurrion			BTI
	Weighted Average Estimated Useful Life (In Years)	Amount		Weighted Average Estimated Useful Life (In Years)	Amount		Weighted Average Estimated Useful Life (In Years)	Amount		Weighted Average Estimated Useful Life (In Years)	Amount
Finite-lived intangible assets:
Existing technology	5	$	15.4	5	$	20.1	—	$	—	8	$	37.1
Customer relationships	—	—		1	0.2		—	—		8	5.3
Other	—	—		—	—		—	—		1	0.9
Total intangible assets with finite lives		15.4			20.3			—			43.3
Indefinite-lived intangible assets:
IPR&D		—			—			49.0			—
Total intangible assets acquired		15.4			$	20.3		$	49.0		$	43.3