Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by Component) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	$ (343.2)	$ (152.0)	$ (323.2)	$ (165.5)
Other comprehensive loss before reclassifications	(37.1)	(38.2)	(68.4)	(30.9)
Amounts reclassified from AOCI	6.6	3.6	17.9	9.8
Other comprehensive loss	(30.5)	(34.6)	(50.5)	(21.1)
Balance, end	(373.7)	(186.6)	(373.7)	(186.6)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(119.0)	(25.3)	(90.6)	(32.4)
Other comprehensive loss before reclassifications	(33.9)	(35.8)	(62.3)	(28.7)
Amounts reclassified from AOCI	0.0	0.0	0.0	0.0
Other comprehensive loss	(33.9)	(35.8)	(62.3)	(28.7)
Balance, end	(152.9)	(61.1)	(152.9)	(61.1)
Cash Flow Hedges and Other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(5.8)	(1.8)	(5.3)	(3.3)
Other comprehensive loss before reclassifications	(3.2)	(2.4)	(6.1)	(2.2)
Amounts reclassified from AOCI	1.8	0.5	4.2	1.8
Other comprehensive loss	(1.4)	(1.9)	(1.9)	(0.4)
Balance, end	(7.2)	(3.7)	(7.2)	(3.7)
Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(218.4)	(124.9)	(227.3)	(129.8)
Other comprehensive loss before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from AOCI	4.8	3.1	13.7	8.0
Other comprehensive loss	4.8	3.1	13.7	8.0
Balance, end	$ (213.6)	$ (121.8)	$ (213.6)	$ (121.8)