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Stock Based Compensation And Incentive Performance Plans Stock Based Compensation And Incentive Performance Plans (Stock Option Fair Value Assumptions) (Details) (USD $)	12 Months Ended
	Jun. 30, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free rate	2.38%
Expected volatility	34.20%
Expected life (years)	4 years 9 months
Dividend yield	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 6.03

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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