Pension Plans (Schedule Of Net Periodic Defined Benefit Pension Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Pension and Other Postretirement Benefit Expense [Abstract]
Service cost	$ 4.0	$ 0.6	$ 4.7	$ 1.2
Interest cost	1.1	2.0	5.4	4.0
Expected return on plan assets	(3.0)	(2.2)	(5.2)	(4.5)
Amortization of prior service cost and net actuarial loss	0.8	0.5	2.0	1.1
Net periodic benefit cost	$ 2.9	$ 0.9	$ 6.9	$ 1.8