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Other Financial Information (Components Of Receivables) (Details) (USD $) In Thousands	Sep. 30, 2011	Oct. 01, 2010
Other Financial Information
Amounts billed, net	$ 1,016,792	$ 818,761
Unbilled receivables and other	996,516	793,918
Retentions receivable	64,186	47,165
Total receivables, net	2,077,494	1,659,844
Amounts due from the United States federal government included above, net of advanced billings	288,165	309,176
Claims receivable	$ 14,712	$ 14,201

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Amounts Due From Us Government Included In Receivable

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The amount billed and withheld by the customer to be paid upon a future event.

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Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Section 02

-Paragraph 3

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

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-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.



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