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Revenue Accounting for Contracts / Accounting for Joint Ventures (Subcontractor Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Mar. 27, 2015	Apr. 01, 2016	Mar. 27, 2015
Revenue Accounting For Contracts Accounting For Joint Ventures [Abstract]
Pass-through costs included in revenues	$ 601,129	$ 615,336	$ 1,271,460	$ 1,322,166

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- Definition

Pass-through Cost

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No definition available.

+ Details

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X

- Definition

Revenue Accounting for Contracts / Accounting for Joint Ventures [Abstract]

+ References

No definition available.

+ Details

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