Receivables (Schedule of Receivables) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Jul. 04, 2015	Sep. 27, 2014
Receivables [Abstract]
Accounts receivable	$ 302,675	$ 332,450
Long-term contract receivable - Amounts billed	97,875	125,497
Long-term contract receivable - Unbilled recoverable costs and accrued profits	303,729	313,530
Total long-term contract receivables	401,604	439,027
Other	11,835	13,738
Total receivables	716,114	785,215
Less allowance for doubtful accounts	(5,149)	(4,341)
Receivables	$ 710,965	$ 780,874

Trade Receivables, Gross

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- Definition

Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

+ References

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

-Publisher FASB

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-SubTopic 310

-Section 50

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-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3(c))

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- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

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

-Publisher FASB

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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

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- Definition

Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy.

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

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-Publisher FASB

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-Topic 225

-SubTopic 10

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-Paragraph 2

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-Topic 230

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-Subparagraph (a)

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No definition available.

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- Definition

Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date.

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- Definition

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.

+ References

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-Publisher FASB

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-Topic 210

-SubTopic 10

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