Post Retirement Plans (Schedule Of Net Periodic Defined Benefit Pension Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Pension and Other Postretirement Benefit Expense [Abstract]
Service cost	$ 2.0	$ 4.0	$ 4.1	$ 4.7
Interest cost	2.7	1.1	5.1	5.4
Expected return on plan assets	(2.9)	(3.0)	(5.9)	(5.2)
Amortization of prior service cost and net actuarial loss	1.0	0.8	1.9	2.0
Net periodic benefit cost	$ 2.8	$ 2.9	$ 5.2	$ 6.9