Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Textual (Details)

v2.4.0.6
Fair Value Measurements Textual (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Feb. 29, 2008
Jun. 30, 2010
Jun. 30, 2011
Minimum
Jun. 30, 2010
Minimum
Jun. 30, 2011
Maximum
Jun. 30, 2010
Maximum
Fair Value Measurements            
Securities, contractual maturity     20 years 20 years 30 years 30 years
Auction failure in par value $ 48.2          
Available-for-sale securities, sold at par   $ 16.8