Restructuring and Lease Charges, Net (Schedule of Restructuring Plan Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended			9 Months Ended			3 Months Ended	9 Months Ended							3 Months Ended	9 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended		9 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013 Q3 2013 Restructuring Plan [Member]	Sep. 29, 2013 Q3 2013 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q3 2013 Restructuring Plan [Member] Facility Closing [Member]	Sep. 29, 2013 Q2 2013 Restructuring Plan [Member]	Sep. 29, 2013 Q2 2013 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q2 2013 Restructuring Plan [Member] Facility Closing [Member]	Mar. 31, 2013 Q1 2013 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q1 2013 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q4 2012 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q3 2012 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q2 2012 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Q1 2012 Restructuring Plan [Member] Severance [Member]	Sep. 29, 2013 Previous restructuring and integration plans [Member]	Sep. 29, 2013 Previous restructuring and integration plans [Member] Severance [Member]	Sep. 29, 2013 Human Health [Member] Q3 2013 Restructuring Plan [Member]	Sep. 29, 2013 Human Health [Member] Q2 2013 Restructuring Plan [Member]	Mar. 31, 2013 Human Health [Member] Q1 2013 Restructuring Plan [Member]	Dec. 30, 2012 Human Health [Member] Q4 2012 Restructuring Plan [Member]	Sep. 30, 2012 Human Health [Member] Q3 2012 Restructuring Plan [Member]	Sep. 29, 2013 Human Health [Member] Q3 2012 Restructuring Plan [Member]	Sep. 29, 2013 Human Health [Member] Q2 2012 Restructuring Plan [Member]	Dec. 30, 2012 Human Health [Member] Q2 2012 Restructuring Plan [Member]	Dec. 30, 2012 Human Health [Member] Q1 2012 Restructuring Plan [Member]	Sep. 29, 2013 Environmental Health [Member] Q2 2013 Restructuring Plan [Member]	Mar. 31, 2013 Environmental Health [Member] Q1 2013 Restructuring Plan [Member]	Dec. 30, 2012 Environmental Health [Member] Q4 2012 Restructuring Plan [Member]	Sep. 30, 2012 Environmental Health [Member] Q3 2012 Restructuring Plan [Member]	Sep. 29, 2013 Environmental Health [Member] Q3 2012 Restructuring Plan [Member]	Sep. 29, 2013 Environmental Health [Member] Q2 2012 Restructuring Plan [Member]	Dec. 30, 2012 Environmental Health [Member] Q2 2012 Restructuring Plan [Member]	Dec. 30, 2012 Environmental Health [Member] Q1 2012 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and lease charges, net	$ 1,126	$ 9,672	$ 23,713	$ 21,034	$ 532	$ 394	$ 138	$ 19,048	$ 18,476	$ 572	$ 2,585				$ 2,052				$ 500	$ 10,300	$ 2,300	$ 600	$ 3,900		$ 2,100	$ 7,200	$ 5,400	$ 8,800	$ 200	$ 2,400	$ 3,900			$ 200	$ 1,000
Restructuring Reserve [Roll Forward]
Balance at beginning of period			21,364										2,682	7,553	4,586	1,281
Restructuring Reserve, Accrual Adjustment														(546)		30		(300)						(300)								(300)	(100)
Amounts paid and foreign currency translation					(26)	0	(26)	(4,343)	(3,824)	(519)		(2,371)	(2,016)	(2,859)	(3,975)	(594)	(1,900)
Balance at end of period	$ 27,739		$ 27,739		$ 506	$ 394	$ 112	$ 14,705	$ 14,652	$ 53		$ 214	$ 666	$ 4,148	$ 2,663	$ 717	$ 8,900