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Significant Accounting Policies (Policy)
12 Months Ended
Sep. 30, 2011
Significant Accounting Policies 
Revenue Accounting For Contracts And Use Of Joint Ventures Policy
Fair Value Measurements
Cash Equivalents
Receivables And Billings In Excess Of Costs Policy
Property, Equipment And Improvements
Goodwill And Other Intangible Assets
Foreign Currencies
Earnings Per Share
Share-Based Payments
Concentrations Of Credit Risk
Use Of Estimates And Assumptions Policy