Restructuring and Contract Termination Charges, Net Restructuring and Contract Termination Charges, Net (Schedule of Initial Charges) (Details) $ in Thousands	3 Months Ended										12 Months Ended
	Jan. 02, 2022 USD ($) employees	Oct. 03, 2021 USD ($) employees	Jul. 04, 2021 USD ($) employees	Apr. 04, 2021 USD ($) employees	Oct. 04, 2020 USD ($) employees	Apr. 05, 2020 USD ($) employees	Dec. 29, 2019 USD ($) employees	Sep. 29, 2019 USD ($) employees	Jun. 30, 2019 USD ($) employees	Mar. 31, 2019 USD ($) employees	Jan. 02, 2022 USD ($)	Jan. 03, 2021 USD ($)	Dec. 29, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net											$ 16,432	$ 8,013	$ 29,428
Q3 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees					23
Restructuring and other costs, net					$ 2,981
Q1 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees						32
Restructuring and other costs, net						$ 4,220
Q4 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees							22
Restructuring and other costs, net							$ 2,581
Q3 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees								259
Restructuring and other costs, net								$ 13,797
Q2 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees									44
Restructuring and other costs, net									$ 5,590
Q1 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees										105
Restructuring and other costs, net										$ 7,460
Q1 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees				77
Restructuring and other costs, net				$ 5,556
Q4 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees		39
Restructuring and other costs, net	$ 3,366
Q3 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees	31
Restructuring and other costs, net		$ 786
Q2 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | employees			25
Restructuring and other costs, net			$ 1,532
Diagnostics [Member] | Severance [Member] | Q3 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net					901
Diagnostics [Member] | Severance [Member] | Q1 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net						1,134
Diagnostics [Member] | Severance [Member] | Q4 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net							2,404
Diagnostics [Member] | Severance [Member] | Q3 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net								2,641
Diagnostics [Member] | Severance [Member] | Q2 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net									1,129
Diagnostics [Member] | Severance [Member] | Q1 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net										1,459
Diagnostics [Member] | Severance [Member] | Q1 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net				1,615
Diagnostics [Member] | Severance [Member] | Q4 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	$ 77
Diagnostics [Member] | Severance [Member] | Q3 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net		366
Diagnostics [Member] | Severance [Member] | Q2 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net			564
Diagnostics [Member] | Facility Closing [Member] | Q3 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net					0
Diagnostics [Member] | Facility Closing [Member] | Q1 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net						682
Diagnostics [Member] | Facility Closing [Member] | Q4 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net							0
Diagnostics [Member] | Facility Closing [Member] | Q3 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net								0
Diagnostics [Member] | Facility Closing [Member] | Q2 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net									0
Diagnostics [Member] | Facility Closing [Member] | Q1 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net										0
Diagnostics [Member] | Facility Closing [Member] | Q1 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net				0
Diagnostics [Member] | Facility Closing [Member] | Q4 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0
Diagnostics [Member] | Facility Closing [Member] | Q3 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net		0
Diagnostics [Member] | Facility Closing [Member] | Q2 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net			0
Discovery & Analytical Solutions [Member] | Severance [Member] | Q3 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net					2,080
Discovery & Analytical Solutions [Member] | Severance [Member] | Q1 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net						2,312
Discovery & Analytical Solutions [Member] | Severance [Member] | Q4 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net							177
Discovery & Analytical Solutions [Member] | Severance [Member] | Q3 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net								11,156
Discovery & Analytical Solutions [Member] | Severance [Member] | Q2 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net									4,461
Discovery & Analytical Solutions [Member] | Severance [Member] | Q1 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net										6,001
Discovery & Analytical Solutions [Member] | Severance [Member] | Q1 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net				3,941
Discovery & Analytical Solutions [Member] | Severance [Member] | Q4 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	3,139
Discovery & Analytical Solutions [Member] | Severance [Member] | Q3 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net		420
Discovery & Analytical Solutions [Member] | Severance [Member] | Q2 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net			968
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q3 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net					$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q1 2020 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net						$ 92
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q4 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net							$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q3 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net								$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q2 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net									$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q1 2019 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net										$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q1 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net				$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q4 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	$ 150
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q3 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net		$ 0
Discovery & Analytical Solutions [Member] | Facility Closing [Member] | Q2 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net			$ 0