Goodwill and Other Intangible Assets - Rollforward of Goodwill (Details) $ in Millions	9 Months Ended
Sep. 27, 2019 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 6,133.1
Adjustments to preliminary purchase price allocations for acquisitions completed in 2018	72.0
Attributable to 2019 acquisitions	1,839.8
Attributable to the Tektronix Video Business Combination	(40.2)
Foreign currency translation and other	(9.2)
Ending balance	$ 7,995.5

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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