Impact from Severe Weather Event (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended			12 Months Ended
	Oct. 19, 2012	Dec. 31, 2012	Sep. 27, 2012	Jun. 28, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Impact From Severe Weather Event [Abstract]
Insurance settlement	$ 234.9					$ 234.9
Severe Weather Event Charge gross						88.7
Gain On Insurance Settlement Severe Weather Event					30.3	146.2	0
Impact From Severe Weather Event		18.1	218.8	54.5	30.3	(146.2)	0
Asset Impairment Severe Weather Event					$ 0	$ 0.2