Revenue (Significant Changes in Contact Assets and Liabilities) (Details) $ in Thousands	9 Months Ended
Jun. 27, 2020 USD ($)
Contract Assets
Balance, September 28, 2019	$ 80,331
Changes in estimated stage of completion	94,646
Transfers to accounts receivable, net	(88,566)
Acquisitions	6,107
Other	(731)
Balance, June 27, 2020	91,787
Contract Liabilities
Balance, September 28, 2019	81,045
Revenue recognized included in balance at beginning of period	(52,176)
Increases due to payments received, excluding amounts recognized as revenue during period	44,871
Acquisitions	3,182
Other	(1,271)
Balance, June 27, 2020	$ 75,651

Amount of change in Contract with Customer, Asset due to currency translation and other.

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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

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