Goodwill and Intangible Assets, Net (Changes in the Carrying Amount of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jul. 02, 2017 USD ($)
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 2,247,966
Foreign currency translation	38,470
Goodwill, Acquisition, Earn Outs and Other Adjustments	70,254
Balance at end of period	2,356,690
Diagnostics [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	944,030
Foreign currency translation	16,699
Goodwill, Acquisition, Earn Outs and Other Adjustments	72,054
Balance at end of period	1,032,783
Discovery & Analytical Solutions [Member]
Changes in the carrying amount of goodwill
Balance at beginning of period	1,303,936
Foreign currency translation	21,771
Goodwill, Acquisition, Earn Outs and Other Adjustments	(1,800)
Balance at end of period	$ 1,323,907