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Description Of Business And Basis Of Presentation (Tables) | 12 Months Ended
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Sep. 30, 2011
Description Of Business And Basis Of Presentation |
Revenues Realized From Each Of These Types Of Contracts |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Cost-reimbursable |  |  | 81 | % |  |  | 86 | % |  |  | 85 | %
Fixed-price |  |  | 16 |  |  |  | 13 |  |  |  | 14 |
Guaranteed maximum price |  |  | 3 |  |  |  | 1 |  |  |  | 1 |

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 37 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 + Details
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