Accumulated Other Comprehensive Loss (Changes in AOCI by Component) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (388.9)	$ (343.2)	$ (413.2)	$ (323.2)
Other comprehensive loss before reclassifications	(8.5)	(37.1)	6.1	(68.4)
Amounts reclassified from AOCI	3.2	6.6	12.9	17.9
Other comprehensive (loss) income	(5.3)	(30.5)	19.0	(50.5)
Ending balance	(394.2)	(373.7)	(394.2)	(373.7)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(162.9)	(119.0)	(174.2)	(90.6)
Other comprehensive loss before reclassifications	(7.7)	(33.9)	3.6	(62.3)
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Other comprehensive (loss) income	(7.7)	(33.9)	3.6	(62.3)
Ending balance	(170.6)	(152.9)	(170.6)	(152.9)
Cash Flow Hedges and Other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1.2)	(5.8)	(6.7)	(5.3)
Other comprehensive loss before reclassifications	(0.8)	(3.2)	2.5	(6.1)
Amounts reclassified from AOCI	(0.1)	1.8	2.1	4.2
Other comprehensive (loss) income	(0.9)	(1.4)	4.6	(1.9)
Ending balance	(2.1)	(7.2)	(2.1)	(7.2)
Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(224.8)	(218.4)	(232.3)	(227.3)
Other comprehensive loss before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from AOCI	3.3	4.8	10.8	13.7
Other comprehensive (loss) income	3.3	4.8	10.8	13.7
Ending balance	$ (221.5)	$ (213.6)	$ (221.5)	$ (213.6)