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Revenue Accounting for Contracts / Accounting for Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Revenue Accounting For Contracts Accounting For Joint Ventures [Abstract]
Pass-through costs included in revenues	$ 889,147	$ 628,070	$ 2,198,197	$ 1,861,615

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- Definition

Pass through costs included in revenues.

+ References

No definition available.

+ Details

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X

- Definition

Revenue accounting for contracts / accounting for joint ventures.

+ References

No definition available.

+ Details

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