Business Acquisitions, Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 28, 2014

Business Combinations and Investments, Goodwill and Acquired Intangible Assets [Abstract]

Purchase Price Goodwill Acquired and Intangible Assets Acquired for the Acquisitions

The following tables show the purchase price (net of cash acquired), goodwill acquired and intangible assets acquired for the acquisitions made in 2014 and 2013 (in millions):

	2014
Name	Acquisition Date	Purchase  Price		Goodwill  Acquired		Acquired Intangible  Assets
Photon	March 30, 2014	$	2.9	$	1.4	$	1.5
Atlas	August 17, 2014	5.2		3.6		0.8
Bolt	November 18, 2014	171.0		128.8		41.5
Oceanscience	October 22, 2014	14.7		9.0		4.4
Other investments		2.0		—		—
		$	195.8	$	142.8	$	48.2

	2013
Name	Acquisition Date	Purchase  Price		Goodwill  Acquired		Acquired Intangible  Assets
RESON	March 1, 2013	$	69.7	$	35.1	$	25.5
Axiom	May 8, 2013	4.0		3.4		0.3
CETAC	August 30, 2013	26.4		11.1		6.7
CDL	October 22, 2013	21.8		11.9		7.8
Purchase of remaining interest of Nova Sensors	July 8, 2013	4.9		—		—
Other investments		1.4		1.0		0.3
		$	128.2	$	62.5	$	40.6

Estimated Fair Values of the Assets Acquired and Liabilities

The following is a summary at the acquisition date of the estimated fair values allocated to the assets acquired and liabilities assumed for the acquisitions made in 2014 and 2013 (in millions):

	2014			2013
Current assets, excluding cash acquired	$	34.0		$	40.1
Property, plant and equipment	8.7			8.3
Goodwill	142.8			62.5
Other acquired intangible assets	48.2			40.6
Other long-term assets	5.3			—
Total assets acquired	239.0			151.5
Current liabilities	(26.0		)	(21.4		)
Long-term liabilities	(17.2		)	(6.8		)
Total liabilities assumed	(43.2		)	(28.2		)
Noncontrolling interests (a)	—			4.9
Purchase price, net of cash acquired	$	195.8		$	128.2
(a) relates to the purchase of the remaining interest in Nova Sensors.

Acquired Intangible Assets

The following table is a summary at the acquisition date of the acquired intangible assets and weighted average useful life in years for the acquisitions made in 2014 and 2013 (dollars in millions):

	2014			2013
Intangibles subject to amortization:	Intangible Assets		Weighted average useful life in years	Intangible Assets		Weighted average useful life in years
Proprietary technology	$	18.4	11.0	$	17.5	10.0
Customer list/relationships	21.4		11.3	11.1		9.7
Backlog	0.8		0.3	0.7		0.6
Total intangibles subject to amortization	40.6		11.0	29.3		9.6
Intangibles not subject to amortization:
Trademarks	7.6		n/a	11.3		n/a
Total intangibles not subject to amortization	7.6		n/a	11.3		n/a
Total acquired intangible assets	$	48.2	n/a	$	40.6	n/a
Goodwill	$	142.8	n/a	$	62.5	n/a

Summary of Changes in the Carrying Value of Goodwill

The following table summarizes the changes in the carrying value of goodwill (in millions):

	Instrumentation			Digital Imaging			Aerospace and Defense Electronics			Engineered Systems			Total
Balance at December 30, 2012	$	493.8		$	327.1		$	145.2		$	24.1		$	990.2
Current year acquisitions	58.1			4.4			—			—			62.5
Foreign currency changes and other	(2.4		)	(13.0		)	0.4			0.1			(14.9		)
Balance at December 29, 2013	549.5			318.5			145.6			24.2			1,037.8
Current year acquisitions	142.8			—			—			—			142.8
Foreign currency changes and other	(12.2		)	(16.3		)	(1.1		)	(0.4		)	(30.0		)
Balance at December 28, 2014	$	680.1		$	302.2		$	144.5		$	23.8		$	1,150.6

Summary of Carrying Value of Other Acquired Intangible Assets

The following table summarizes the carrying value of other acquired intangible assets (in millions):

	2014						2013
	Gross carrying amount		Accumulated amortization		Net carrying amount		Gross carrying amount		Accumulated amortization		Net carrying amount
Other acquired intangible assets:
Proprietary technology	$	202.8	$	99.7	$	103.1	$	191.3	$	82.5	$	108.8
Customer list/relationships	117.6		51.0		66.6		100.5		42.7		57.8
Patents	0.7		0.6		0.1		0.7		0.6		0.1
Non-compete agreements	0.9		0.9		—		0.9		0.9		—
Trademarks	3.4		1.9		1.5		3.3		1.7		1.6
Backlog	13.2		12.7		0.5		12.9		12.8		0.1
Other acquired intangible assets subject to amortization	338.6		166.8		171.8		309.6		141.2		168.4
Other acquired intangible assets not subject to amortization
Trademarks	105.8		—		105.8		102.5		—		102.5
Total other acquired intangible assets:	$	444.4	$	166.8	$	277.6	$	412.1	$	141.2	$	270.9

Estimated Remaining Useful Lives by Asset Category

The estimated remaining useful lives by asset category as of December 28, 2014, are as follows:

Intangibles subject to amortization	Weighted average remaining useful life in years
Proprietary technology	5.2
Customer list/relationships	6.0
Patents	6.1
Backlog	0.3
Trademarks	6.8
Total intangibles subject to amortization	5.5