Segment Information (Reconciliation Of Our Condensed Consolidated Segment Operating Income To Condensed Consolidated Income Before Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	$ 134.9	$ 144.8	$ 291.8	$ 285.7
Unallocated general corporate expenses	(402.6)	(380.6)	(795.3)	(733.0)
Purchase accounting adjustments	(32.3)	(34.0)	(66.9)	(68.8)
Acquisition / divestiture items	(7.3)	(6.6)	(11.2)	(10.1)
Stock-based compensation / deferred compensation	(26.2)	(38.3)	(51.2)	(67.0)
Restructuring and other costs	(10.0)	(4.9)	(22.7)	(6.2)
Total non-operating income, net	86.7	17.6	68.3	14.1
Consolidated income before taxes	221.6	162.4	360.1	299.8
Operating segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	244.0	253.5	506.9	487.1
Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Unallocated general corporate expenses	$ (33.3)	$ (24.9)	$ (63.1)	$ (49.3)