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Receivables (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Mar. 28, 2014 | Sep. 27, 2013
Components of receivables: |  |
Amounts billed | $ 1,368,162 | $ 1,389,278
Unbilled receivables and other | 1,291,713 | 1,109,931
Retentions receivable | 58,341 | 49,781
Total receivables, net | 2,718,216 | 2,548,990
Other information about receivables: |  |
Amounts due from the United States federal government, included above, net of advanced billings | 291,393 | 292,698
Claims receivable | $ 36,805 | $ 25,237
Unbilled amounts billed and collected | 12 months |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 + Details
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