Segment Information (Reconciliation Of Our Condensed Consolidated Segment Operating Income To Condensed Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Apr. 01, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	$ 137.0	$ 156.9
Unallocated general corporate expenses	(423.8)	(392.7)
Amortization of purchased intangible assets	(34.7)	(34.6)
Acquisition / divestiture items	(7.0)	(3.9)
Stock-based compensation / deferred compensation	(35.4)	(25.0)
Restructuring and other costs	(12.0)	(12.7)
Total non-operating income (expense), net	23.6	(18.4)
Consolidated income before taxes	160.6	138.5
Operating segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	253.1	262.9
Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Unallocated general corporate expenses	$ (27.0)	$ (29.8)

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