XML 80 R51.htm IDEA: XBRL DOCUMENT

Note 10. Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			11 years 219 days
Amortization of Intangible Assets	$ 1.9	$ 1.8	$ 3.8	$ 3.7

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References+ Details