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Investments in Affiliates (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Investments in equity method affiliates	$ 6.9	$ 6.7
Undistributed earnings of equity method affiliates	3.6	3.5
Distributions received from equity method affiliates	$ 0.8	$ 1.0	$ 3.2
Slifer, Smith, and Frampton/Vail Associates Real Estate, LLC ("SSF/VARE") [Member]
Ownership interest	50.00%
KRED [Member]
Ownership interest	50.00%
Clinton Ditch and Reservoir Company [Member]
Ownership interest	43.00%

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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