Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Changes in Accumulated other comprehensive loss (net of tax)
Balance at beginning of the period			$ (281.1)	$ (278.0)
Other comprehensive loss before reclassifications, net of tax			(85.7)	35.6
Reclassifications to net income, net of tax			13.2	14.8
Other comprehensive (loss) income, net of tax	(75.0)	97.4	(72.5)	50.4
Balance at end of the period	(353.6)	(227.6)	(353.6)	(227.6)
Cash Flow Hedges
Changes in Accumulated other comprehensive loss (net of tax)
Balance at beginning of the period			(1.0)	(2.0)
Other comprehensive loss before reclassifications, net of tax			(1.2)	0.2
Reclassifications to net income, net of tax			1.1	(0.4)
Other comprehensive (loss) income, net of tax			(0.1)	(0.2)
Balance at end of the period	(1.1)	(2.2)	(1.1)	(2.2)
Pension and Other Postretirement Benefits
Changes in Accumulated other comprehensive loss (net of tax)
Balance at beginning of the period			(418.1)	(456.5)
Other comprehensive loss before reclassifications, net of tax			(1.0)	57.3
Reclassifications to net income, net of tax			12.1	4.4
Other comprehensive (loss) income, net of tax			11.1	61.7
Balance at end of the period	(407.0)	(394.8)	(407.0)	(394.8)
Foreign Currency Translation
Changes in Accumulated other comprehensive loss (net of tax)
Balance at beginning of the period			138.0	180.5
Other comprehensive loss before reclassifications, net of tax			(83.5)	(21.9)
Reclassifications to net income, net of tax				10.8
Other comprehensive (loss) income, net of tax			(83.5)	(11.1)
Balance at end of the period	$ 54.5	$ 169.4	$ 54.5	$ 169.4