Receivables Receivables (Schedule of Receivables) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Mar. 29, 2014	Sep. 28, 2013
Receivables [Abstract]
Accounts receivable	$ 336,370	$ 328,038
Long-term contract receivable - Amounts billed	126,403	133,149
Long-term contract receivable - Unbilled recoverable costs and accrued profits	320,575	337,520
Total long-term contract receivables	446,978	470,669
Other	15,261	17,168
Total receivables	798,609	815,875
Less allowance for doubtful accounts	(5,260)	(4,499)
Receivables	$ 793,349	$ 811,376