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Revenue and Contract Balances - Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Jan. 01, 2023 | Jan. 02, 2022 | Oct. 02, 2022
Disaggregation of Revenue [Line Items] |  |  |
Contract liability revenue recognized during the period | $ 81,000,000 | $ 63,000,000 |
Net favorable (unfavorable) revenue and operating income adjustments | 3,500,000 | 2,800,000 |
Liabilities for anticipated losses | 7,600,000 |  | $ 10,000,000
Estimated cost to complete the related contracts | $ 55,000,000 |  | 80,000,000
Period for billing and collecting unbilled receivables | 12 months |  |
Remaining unsatisfied performance obligation | $ 3,790,120,000 |  |
Remaining performance obligation, termination notice period one | 30 days |  |
Remaining performance obligation, termination notice period two | 60 days |  |
Remaining performance obligation, termination notice period three | 90 days |  |
Remediation and Construction Management |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Accounts receivable related to claims and requests for equitable adjustment on contracts |  |  | $ 0
CIG |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Net favorable (unfavorable) revenue and operating income adjustments | $ 0 | $ 0 |

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- Definition Represents the amount of remaining estimated costs to complete the contracts. + References No definition available. + Details
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- Definition Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in measure of progress which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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- Definition Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126916656&loc=d3e57777-111642 + Details
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