Principles Of Consolidation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Impaired Long-Lived Assets Held and Used [Line Items]
Assets Held-for-sale, Long Lived	$ 6.4		$ 7.3
Impairment of Long-Lived Assets Held-for-use	$ 0.6	$ 10.5