Restructuring and Lease Charges, Net (Schedule of Restructuring Plan Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended											3 Months Ended					12 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended				6 Months Ended	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014 Q2 2014 Restructuring Plan [Member] Severance [Member]	Mar. 30, 2014 Q1 2014 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Q1 2014 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Q4 2013 Restructuring Plan [Member]	Jun. 29, 2014 Q4 2013 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Q4 2013 Restructuring Plan [Member] Facility Closing [Member]	Jun. 29, 2014 Q3 2013 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Q2 2013 Restructuring Plan [Member]	Jun. 29, 2014 Q2 2013 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Q2 2013 Restructuring Plan [Member] Facility Closing [Member]	Jun. 29, 2014 Q1 2013 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Previous restructuring and integration plans [Member]	Jun. 29, 2014 Previous restructuring and integration plans [Member] Severance [Member]	Jun. 29, 2014 Human Health [Member] Q2 2014 Restructuring Plan [Member]	Mar. 30, 2014 Human Health [Member] Q1 2014 Restructuring Plan [Member]	Dec. 29, 2013 Human Health [Member] Q4 2013 Restructuring Plan [Member]	Sep. 29, 2013 Human Health [Member] Q3 2013 Restructuring Plan [Member]	Jun. 30, 2013 Human Health [Member] Q2 2013 Restructuring Plan [Member]	Dec. 29, 2013 Human Health [Member] Q2 2013 Restructuring Plan [Member]	Jun. 29, 2014 Human Health [Member] Q2 2013 Restructuring Plan [Member] Facility Closing [Member]	Mar. 31, 2013 Human Health [Member] Q1 2013 Restructuring Plan [Member]	Jun. 29, 2014 Human Health [Member] Q1 2013 Restructuring Plan [Member] Severance [Member]	Jun. 29, 2014 Environmental Health [Member] Q2 2014 Restructuring Plan [Member]	Mar. 30, 2014 Environmental Health [Member] Q1 2014 Restructuring Plan [Member]	Dec. 29, 2013 Environmental Health [Member] Q4 2013 Restructuring Plan [Member]	Jun. 30, 2013 Environmental Health [Member] Q2 2013 Restructuring Plan [Member]	Jun. 29, 2014 Environmental Health [Member] Q2 2013 Restructuring Plan [Member] Facility Closing [Member]	Mar. 31, 2013 Environmental Health [Member] Q1 2013 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and lease charges, net	$ 742	$ 19,247	$ 2,877	$ 22,557	$ 735	$ 567												$ 500	$ 400	$ 8,200	$ 500	$ 9,900	$ 600		$ 2,300		$ 300	$ 200	$ 3,000	$ 8,800		$ 200
Restructuring Reserve [Roll Forward]
Balance at beginning of period			26,374					8,841	1,987	6,854	137	12,750	12,750	0	208
Restructuring Reserve, Accrual Adjustment												184	0	184	(208)		100							100		(200)					100
Amounts paid and foreign currency translation					(228)		(345)	(2,356)	(1,456)	(900)	(133)	(7,935)	(7,798)	(137)		(3,600)
Balance at end of period	$ 14,676		$ 14,676		$ 507		$ 222	$ 6,485	$ 531	$ 5,954	$ 4	$ 4,999	$ 4,952	$ 47	$ 0	$ 9,700