Business Combinations (Narrative) (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended | | |
Jul. 02, 2017USD ($)employees | Jul. 03, 2016USD ($) | Jul. 02, 2017USD ($)employees | Jul. 03, 2016USD ($) | Jan. 01, 2017USD ($) | Jan. 03, 2016USD ($) | Apr. 02, 2017USD ($) | Apr. 03, 2016USD ($) |
Business Acquisition [Line Items] | | | | | | | | |
Number of Years in Measurement Period from Acquisition Date to Change Underlying Assumptions | | | 1 year | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 83,000,000 | | $ 83,000,000 | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value | 64,076,000 | $ 62,878,000 | $ 64,076,000 | $ 62,878,000 | $ 63,201,000 | $ 57,350,000 | $ 63,978,000 | $ 58,579,000 |
Business Combination, Contingent Consideration Arrangements, Maximum Period | | | 2 years 3 months | | | | | |
Business Combination, Contingent Consideration Arrangements, Weighted Average Period | | | 1 year 6 months | | | | | |
Total transaction costs | 3,700,000 | $ 200,000 | $ 6,300,000 | $ 500,000 | | | | |
Business Combination, Contingent Consideration Arrangements, Description | | | Contingent consideration is measured at fair value at the acquisition date, based on the probability that revenue thresholds or product development milestones will be achieved during the earnout period, with changes in the fair value after the acquisition date affecting earnings to the extent it is to be settled in cash. | | | | | |
Goodwill | 2,356,690,000 | | $ 2,356,690,000 | | 2,247,966,000 | | | |
Business Combination, Contingent Consideration, Liability, Current | 15,300,000 | | 15,300,000 | | 15,400,000 | | | |
Business Combination, Contingent Consideration, Liability, Noncurrent | 48,800,000 | | 48,800,000 | | 47,800,000 | | | |
Fiscal Year 2017 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Consideration Transferred | | | 124,851,000 | | | | | |
Cash Acquired | | | (2,429,000) | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets | 15,825,000 | | 15,825,000 | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 9,643,000 | | 9,643,000 | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | 1,084,000 | | 1,084,000 | | | | | |
Cash paid to the shareholders | | | 126,007,000 | | | | | |
Business Combination, Consideration Transferred, Liabilities Incurred | | | 1,273,000 | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Total | (15,414,000) | | (15,414,000) | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | (8,241,000) | | (8,241,000) | | | | | |
Goodwill | 72,454,000 | | 72,454,000 | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | 124,851,000 | | 124,851,000 | | | | | |
Bioo Scientific Corporation [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments | | | | | 63,453,000 | | | |
2016 Acquisitions (excluding Bioo) [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments | | | | | 8,847,000 | | | |
Vanadis Diagnostics AB [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | | | | | | 93,000,000 | | |
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred, Contingent Consideration at Fair Value | | | 64,078,000 | | | $ 56,878,000 | | |
Tulip Diagnostics Private Limited [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments | | | $ 127,280,000 | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | 11 years 5 months | | | | | |
Finite-lived Intangible Assets Acquired | 4,500,000 | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Total | 400,000 | | $ 400,000 | | | | | |
Goodwill | $ (4,100,000) | | $ (4,100,000) | | | | | |
Fiscal Year 2016 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Acquisition, Cost Of Acquired Entity, Working Capital Adjustments | | | | | (261,000) | | | |
Business Combination, Consideration Transferred | | | | | 70,084,000 | | | |
Cash Acquired | | | | | (2,152,000) | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets | | | | | 7,153,000 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | | 7,542,000 | | | |
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments | | | | | $ 72,300,000 | | | |
Number of Businesses Acquired | | | | | 2 | | | |
Cash paid to the shareholders | | | | | $ 72,497,000 | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | | | | | 9 years 5 months | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Total | | | | | $ (8,284,000) | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities | | | | | (1,985,000) | | | |
Goodwill | | | | | 43,588,000 | | | |
Intangible Assets, Gross (Excluding Goodwill) | | | | | 22,100,000 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | | | | | 70,084,000 | | | |
Euroimmun [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% | | 100.00% | | | | | |
Business Acquisition, Cost of Acquired Entity, Cash Paid Including Working Capital And Other Adjustments | $ 1,200,000,000 | | | | | | | |
Entity Number of Employees | employees | 2,400 | | 2,400 | | | | | |
Diagnostics [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Goodwill | $ 1,032,783,000 | | $ 1,032,783,000 | | 944,030,000 | | | |
Discovery & Analytical Solutions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Goodwill | 1,323,907,000 | | 1,323,907,000 | | 1,303,936,000 | | | |
Core Technology [Member] | Fiscal Year 2017 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 3,500,000 | | 3,500,000 | | | | | |
Core Technology [Member] | Fiscal Year 2016 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | 6,600,000 | | | |
Customer Relationships [Member] | Fiscal Year 2017 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 43,000,000 | | 43,000,000 | | | | | |
Customer Relationships [Member] | Fiscal Year 2016 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | 14,900,000 | | | |
Trade Names [Member] | Fiscal Year 2017 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 3,000,000 | | 3,000,000 | | | | | |
Trade Names [Member] | Fiscal Year 2016 Acquisitions [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | $ 570,000 | | | |
India, Rupees | Tulip Diagnostics Private Limited [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | 1,600,000,000 | | 1,600,000,000 | | | | | |
United States of America, Dollars | Tulip Diagnostics Private Limited [Member] | | | | | | | | |
Business Acquisition [Line Items] | | | | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 24,900,000 | | $ 24,900,000 | | | | | |