Restructuring and Related Costs (Restructuring Reserve Rollforward) (Details) - Test & Simulation $ in Thousands	12 Months Ended
Oct. 03, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Balance, September 28, 2019	$ 0
Restructuring expense	11,848
Payments	(3,722)
Other adjustments	390
Balance, October 3, 2020	$ 8,516

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

+ References

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