Impairments, Net Loss on Sale of Long-Lived Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment Impairment or Disposal [Abstract]
Gain (Loss) on Sale of Assets and Asset Impairment Charges	$ 34.4	$ 17.4	$ 16.7
Asset Impairment Charges	21.5	9.0	12.2
Gain (Loss) on Sale of Other Assets	12.9	8.4	4.5
Gain (Loss) on Contract Termination	$ 10.8