Quarterly report pursuant to Section 13 or 15(d)

Restructuring (Details)

v2.4.0.6
Restructuring (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Feb. 29, 2012
Feb. 28, 2011
Feb. 29, 2012
Feb. 28, 2011
Aug. 31, 2011
Restructuring [Abstract]          
Ongoing restructuring costs $ 0.9 $ 0.4 $ 1.4 $ 0.8  
Restructuring reserve $ 4.1   $ 4.1   $ 3.6