Restructuring Activities and Related Impairments (Schedule Of Restructuring And Related Costs) (Details) $ in Millions	9 Months Ended
	Oct. 02, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Balance at beginning of year	$ 5.6
Costs incurred	70.6
Paid/settled	(43.9)
Balance at end of year	32.3
Employee Severance and Related
Restructuring Reserve [Roll Forward]
Balance at beginning of year	5.6
Costs incurred	62.5
Paid/settled	(36.7)
Balance at end of year	31.4
Facility Exit and Related
Restructuring Reserve [Roll Forward]
Balance at beginning of year	0.0
Costs incurred	8.1
Paid/settled	(7.2)
Balance at end of year	$ 0.9