Post Retirement Plans (Schedule Of Net Periodic Defined Benefit Pension Cost) (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Pension and Other Postretirement Benefit Expense [Abstract]
Service cost	$ 2.1	$ 0.7
Interest cost	2.4	4.3
Expected return on plan assets	(3.0)	(2.2)
Amortization of prior service cost and net actuarial loss	0.9	1.2
Net periodic benefit cost	$ 2.4	$ 4.0