Note 14 - Financial Instruments - Derivatives and Hedging (Detail) In Millions	9 Months Ended
	Sep. 30, 2011 USD ($)	Sep. 30, 2011 AUD	Dec. 31, 2010 USD ($)
Investment Foreign Currency, Contract, Amount Sold (in Dollars)		165.0
Investment Foreign Currency, Contract, Amount Purchased	169.1
Proceeds from Sale of Available-for-sale Securities (in Dollars)	174.7	170.2
Derivative, Loss on Derivative	10.0
Estimated Date To Year End Increase To Interest Expense	0.1
Derivative Liability, Fair Value, Gross Liability	$ 0.3		$ 0.5