Pensions Net Benefit Cost (Details) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Components of Net Benefit Cost (Income)
Service Cost-Benefits Earned	$ 7.7	$ 8.0	$ 20.0	$ 17.6
Interest Cost on Benefit Obligation	19.4	23.6	58.1	67.2
Expected Return on Plan Assets	(23.4)	(25.0)	(70.0)	(71.2)
Amortization of Actuarial Net Loss	2.3	1.9	7.0	5.9
Other	(0.1)	0.2	(0.1)	0.1
Net Periodic Benefit Cost	$ 5.9	$ 8.7	$ 15.0	$ 19.6