Comprehensive Income (Details) - Pension Costs [Member] - Reclassification out of Accumulated Other Comprehensive Income [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Pre-tax amount	$ 1.9	$ 2.4	$ 3.9	$ 4.7
Tax	(0.6)	(0.9)	(1.3)	(1.7)
Net of tax	$ 1.3	$ 1.5	$ 2.6	$ 3.0