Receivables Receivables (Schedule of Receivables) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Jun. 28, 2014	Sep. 28, 2013
Receivables [Abstract]
Accounts receivable	$ 327,768	$ 328,038
Long-term contract receivable - Amounts billed	122,951	133,149
Long-term contract receivable - Unbilled recoverable costs and accrued profits	323,095	337,520
Total long-term contract receivables	446,046	470,669
Other	13,167	17,168
Total receivables	786,981	815,875
Less allowance for doubtful accounts	(5,123)	(4,499)
Receivables	$ 781,858	$ 811,376