Impairments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Write down of land value	$ 0.8
Land, fair value	1.2		1.2
Goodwill impairment	$ 0	$ 47.0	$ 0	$ 47.0