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Noncontrolling Interest	3 Months Ended
Noncontrolling Interest	Nov. 30, 2011
Noncontrolling Interest [Abstract]
Noncontrolling Interest	Noncontrolling Interest The equity of minority investors (minority investors are generally physician groups and other healthcare providers that perform surgeries at the Company's facilities) in certain subsidiaries of the Company is reported on the consolidated balance sheets as noncontrolling interest. Noncontrolling interest reported in the consolidated income statements reflect the respective interests in the income or loss of the limited partnerships or limited liability companies attributable to the minority investors (equity interest ranged from 1.75% to 2.00% at November 30, 2011).