Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (381.9)	$ (369.8)	$ (413.2)	$ (323.2)
Other comprehensive income (loss) before reclassifications	(11.5)	21.2	14.6	(31.3)
Amounts reclassified from AOCI	4.5	5.4	9.7	11.3
Other comprehensive (loss) income	(7.0)	26.6	24.3	(20.0)
Ending balance	(388.9)	(343.2)	(388.9)	(343.2)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(151.1)	(139.8)	(174.2)	(90.6)
Other comprehensive income (loss) before reclassifications	(11.8)	20.8	11.3	(28.4)
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Other comprehensive (loss) income	(11.8)	20.8	11.3	(28.4)
Ending balance	(162.9)	(119.0)	(162.9)	(119.0)
Cash Flow Hedges and Other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2.1)	(7.6)	(6.7)	(5.3)
Other comprehensive income (loss) before reclassifications	0.3	0.4	3.3	(2.9)
Amounts reclassified from AOCI	0.6	1.4	2.2	2.4
Other comprehensive (loss) income	0.9	1.8	5.5	(0.5)
Ending balance	(1.2)	(5.8)	(1.2)	(5.8)
Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(228.7)	(222.4)	(232.3)	(227.3)
Other comprehensive income (loss) before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from AOCI	3.9	4.0	7.5	8.9
Other comprehensive (loss) income	3.9	4.0	7.5	8.9
Ending balance	$ (224.8)	$ (218.4)	$ (224.8)	$ (218.4)