Restructuring and Lease Charges, Net (Schedule of Initial Charges) (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Apr. 02, 2017 USD ($) employees	Oct. 02, 2016 USD ($) employees	Jul. 03, 2016 USD ($) employees	Jul. 02, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net				$ 9,606
Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees	90
Restructuring and contract termination charges, net	$ 6,697
Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees		22
Restructuring and contract termination charges, net		$ 1,820
Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees			72
Restructuring and contract termination charges, net			$ 4,667
Employee Severance [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net				6,631
Employee Severance [Member] | Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net				0
Employee Severance [Member] | Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net				0
Facility Closing [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net				$ 66
Diagnostics [Member] | Employee Severance [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net	1,631
Diagnostics [Member] | Employee Severance [Member] | Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net		41
Diagnostics [Member] | Employee Severance [Member] | Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net			561
Diagnostics [Member] | Facility Closing [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net	33
Diagnostics [Member] | Facility Closing [Member] | Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net		0
Diagnostics [Member] | Facility Closing [Member] | Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net			0
Discovery & Analytical Solutions [Member] | Employee Severance [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net	5,000
Discovery & Analytical Solutions [Member] | Employee Severance [Member] | Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net		1,779
Discovery & Analytical Solutions [Member] | Employee Severance [Member] | Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net			4,106
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q1 2017 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net	$ 33
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q3 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net		$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and contract termination charges, net			$ 0