Total Equity (Reclassifications out of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 26, 2014	Jun. 27, 2014	Mar. 28, 2014	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales									$ 5,586.6	$ 5,717.5	$ 5,434.6
Other									(450.7)	(492.0)	(425.5)
Total	(163.2)	(124.2)	(24.8)	(315.4)	13.8	5.7	8.2	(45.8)	(627.6)	(18.1)	4.0
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other									(1.2)	0
Total									(7.9)	18.9
Reclassification out of Accumulated Other Comprehensive Income [Member] | Change in Fair Value of Derivatives [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Sale of PDP and PDEP									3.6	0
Cost of Sales									0	0.7
Total									0	0.7
Reclassification out of Accumulated Other Comprehensive Income [Member] | Amortization of Defined Pension Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service cost									(1.2)	1.7
Net loss									(9.1)	16.5
Total									$ (10.3)	$ 18.2