Principles Of Consolidation Principles Of Consolidation (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended		6 Months Ended
	Dec. 02, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Impaired Long-Lived Assets Held and Used [Line Items]
Stockholders' Equity Note, Reverse Stock Split, Conversion Ratio	0.003333
Assets Held-for-sale, Long Lived		$ 24.9		$ 24.9		$ 39.1
Impairment of Long-Lived Assets Held-for-use		1.0	5.2	11.5	7.1
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income			0.4		0.8
Surplus Properties [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 0.6		$ 5.1