Basis of Condensed Consolidated Financial Statements (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011	May 26, 2010 FAFC [Member]	Sep. 30, 2012 Out-of-Period Adjustment [Member]	Sep. 30, 2012 Out-of-Period Adjustment [Member]	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2012 Maximum [Member]
Prior period adjustment, increase to provision for income taxes, discontinued operations	$ 4.1	$ 4.1
Impact on basic and diluted net income per share					$ 0.04	$ 0.04
Common stock, par value	$ 0.00001	$ 0.00001	$ 0.00001	$ 1.00
Escrow deposit	$ 947.8	$ 947.8	$ 593.9
Escrow deposits, period held by the Company (in business days)							2 days	5 days