Note 20 -Subsequent Events (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 2 Months Ended 3 Months Ended 1 Months Ended
Jun. 30, 2011
Aug. 31, 2011
Nov. 30, 2011
Nov. 30, 2010
Dec. 08, 2011
Maximum [Member]
Dec. 08, 2011
Modified Dutch Auction [Member]
Dec. 08, 2011
Minimum [Member]
Stock Repurchase Program, Authorized Amount (in Dollars) $ 500.0   $ 328.2     $ 150.0  
Treasury Stock Acquired, Average Cost Per Share   $ 23.01     $ 25.25 $ 24.25 $ 22.25
Stock Repurchased During Period, Shares (in Shares)   945,100 0 0   6,185,567