Goodwill and Intangible Assets, Net (Changes in the Carrying Amount of Goodwill) (Details) $ in Thousands	3 Months Ended
	Apr. 02, 2017 USD ($)
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 2,247,966
Foreign currency translation	10,268
Goodwill, Acquisition, Earn Outs and Other Adjustments	74,299
Balance at end of period	2,332,533
Diagnostics [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	944,030
Foreign currency translation	4,312
Goodwill, Acquisition, Earn Outs and Other Adjustments	76,099
Balance at end of period	1,024,441
Discovery & Analytical Solutions [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	1,303,936
Foreign currency translation	5,956
Goodwill, Acquisition, Earn Outs and Other Adjustments	(1,800)
Balance at end of period	$ 1,308,092