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Business Combinations (Separately Recognized Transactions) (Details) - USD ($) $ in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Feb. 02, 2018 | Sep. 28, 2018 | Dec. 29, 2017 | [1]
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 3,548.6 | $ 2,287.1
Series of Individually Immaterial Business Acquisitions [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Fair value of total purchase consideration |  | 1,753.9 |
Net tangible assets acquired |  | 5.1 |
Identifiable intangible assets |  | 551.5 |
Deferred income taxes |  | (83.2) |
Goodwill |  | 1,280.5 |
eBuilder [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Fair value of total purchase consideration | $ 485.2 | $ 485.2 |
Net tangible assets acquired | 92.3 |  |
Goodwill | $ 392.9 |  |
[1] | See Note 2 for a summary of adjustments

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