Goodwill and Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Dec. 29, 2013	Dec. 30, 2012
Goodwill and Intangible Assets Net [Line Items]
Change in any one of the input assumptions for the various reporting units	10.00%
Total amortization expense related to finite-lived intangible assets	$ 73,700	$ 71,500	$ 76,600
Future Amortization Expense, Year One	139,100
Future Amortization Expense, Year Two	145,700
Future Amortization Expense, Year Three	147,400
Future Amortization Expense, Year Four	132,000
Future Amortization Expense, Year Five	119,800
Finite-Lived Intangible Assets, Net	1,276,356	349,640
Goodwill	$ 3,002,198	2,247,966	2,236,863
Impairment Testing Date	1/2/2017
Minimum [Member]
Goodwill and Intangible Assets Net [Line Items]
Long-term terminal growth rates for reporting units	0.00%
Discount rates for reporting units	9.00%
Maximum [Member]
Goodwill and Intangible Assets Net [Line Items]
Long-term terminal growth rates for reporting units	3.00%
Discount rates for reporting units	13.50%
Trade Names And Trademarks [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	$ 52,724	16,069
Licenses [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	10,665	11,260
Discovery & Analytical Solutions [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	184,747	220,023
Goodwill	1,344,235	1,303,936	1,296,724
Discovery & Analytical Solutions [Member] | Trade Names And Trademarks [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	9,928	12,636
Discovery & Analytical Solutions [Member] | Licenses [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	8,441	11,086
Diagnostics [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	1,091,609	129,617
Goodwill	1,657,963	944,030	$ 940,139
Diagnostics [Member] | Trade Names And Trademarks [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	42,796	3,433
Diagnostics [Member] | Licenses [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net	2,224	174
Other Asset Acquisitions [Member]
Goodwill and Intangible Assets Net [Line Items]
Finite-Lived Intangible Assets, Net				$ 7,000	$ 6,800
Prepaid Royalties	72,800			$ 40,300	$ 25,000
Prepaid Royalties, Other Current Asset	5,100
Prepaid Royalties, Other Assets	67,700
Payments of Additional Prepaid Royalties	5,100	9,400
Other Asset Acquisitions extension [Member]
Goodwill and Intangible Assets Net [Line Items]
Prepaid Royalties		$ 6,000
Informatics [Member]
Goodwill and Intangible Assets Net [Line Items]
Goodwill	$ 217,200