Note 9 - Financial Guaranty Insurance Contracts Adjustments To Premiums Earned For Financial Guaranty Contracts (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Adjustments To Premiums Earned For Financial Guaranty Contracts [Line Items]
Refundings	$ 4.6	$ 8.6	$ 18.7	$ 28.3