Acquisitions and Divestitures Divestitures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Third Quarter Property Divestitures [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from Sale of Property, Plant, and Equipment	$ 67.3
Gain (Loss) on Sale of Property	9.5
Second Quarter Property Divestitures [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from Sale of Property, Plant, and Equipment	138.5
Gain (Loss) on Sale of Property	$ 96.2