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Receivables (Schedule of Receivables) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Receivables [Abstract]    
Accounts Receivable $ 328,038 $ 338,000
Amounts billed 133,149 114,482
Unbilled recoverable costs and accrued profits under long-term contracts 337,520 286,887
Total long-term contract receivables 470,669 401,369
Other 17,168 10,936
Total receivables 815,875 750,305
Less allowance for doubtful accounts (4,499) (5,754)
Receivables $ 811,376 $ 744,551