Segment Information (Reconciliation Of Our Condensed Consolidated Segment Operating Income To Condensed Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 01, 2022	Apr. 02, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	$ 156.9	$ 140.9
Unallocated corporate expenses	(392.7)	(352.4)
Purchase accounting adjustments	(34.6)	(34.8)
Acquisition / divestiture items	(3.9)	(3.5)
Stock-based compensation / deferred compensation	(25.0)	(28.7)
Restructuring and other costs	(12.7)	(1.3)
Total non-operating expense, net	(18.4)	(3.5)
Consolidated income before taxes	138.5	137.4
Operating segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	262.9	233.6
Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Unallocated corporate expenses	$ (29.8)	$ (24.4)

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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