Goodwill and Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the period ended June 30, 2013 from December 30, 2012 were as follows:

	Human Health			Environmental Health			Consolidated
	(In thousands)
Balance at December 30, 2012	$	1,632,487		$	490,301		$	2,122,788
Foreign currency translation	(3,694		)	(2,670		)	(6,364		)
Acquisitions and other	—			638			638
Balance at June 30, 2013	$	1,628,793		$	488,269		$	2,117,062

Identifiable Intangible Asset Balances

Identifiable intangible asset balances at June 30, 2013 and December 30, 2012 by category were as follows:

	June 30, 2013			December 30, 2012
	(In thousands)
Patents	$	107,647		$	107,969
Less: Accumulated amortization	(90,947		)	(89,954		)
Net patents	16,700			18,015
Trade names and trademarks	36,769			37,694
Less: Accumulated amortization	(14,480		)	(13,886		)
Net trade names and trademarks	22,289			23,808
Licenses	76,512			80,607
Less: Accumulated amortization	(48,022		)	(47,368		)
Net licenses	28,490			33,239
Core technology	403,462			407,545
Less: Accumulated amortization	(262,246		)	(248,510		)
Net core technology	141,216			159,035
Customer relationships	330,290			327,637
Less: Accumulated amortization	(127,860		)	(108,384		)
Net customer relationships	202,430			219,253
IPR&D	7,421			7,463
Less: Accumulated amortization	(1,818		)	(1,496		)
Net IPR&D	5,603			5,967
Net amortizable intangible assets	416,728			459,317
Non-amortizing intangible assets:
Trade names and trademarks	70,584			70,584
Total	$	487,312		$	529,901