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v3.21.2

Sale of Energy, Chemicals and Resources ("ECR") Business (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 26, 2019 | Oct. 01, 2021 | Oct. 01, 2021 | Oct. 02, 2020 | Sep. 27, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds (payments) related to sales of businesses |  |  | $ (36,360) | $ 5,061 | $ (2,801,425)
Selling, general and administrative expenses |  |  | 2,355,683 | 2,050,695 | 2,072,177
Interest expense |  |  | 72,714 | 62,206 | 83,867
(Gain) loss on investment in equity securities |  |  | (71,325) | 103,623 | $ 78,108
Nui Phao Mining Company |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Selling, general and administrative expenses |  |  |  | 40,000 |
Worley Stock |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Equity instrument consideration, shares | 58.2 |  |  |  |
Number of shares issued in transaction |  |  |  |  | 6.8
Loss on sale of investments |  | $ 155,100 |  |  | $ 4,900
(Gain) loss on investment in equity securities |  |  | 40,700 |  |
Worley Stock | Level 1 |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Prepaid expense and other assets estimated fair value |  |  |  | 347,500 |
Worley Stock | Restricted Stock |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Dividend income |  |  | 19,100 | 16,900 |
(Gain) loss on investment in equity securities |  |  |  | 103,600 |
Other (Expense) Income, Net |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Other operating expense |  |  |  | (15,800) |
SG&A Expense |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Transaction costs |  |  | 200 |  |
Discontinued Operations | Nui Phao Mining Company |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Interest expense |  |  |  |  | 35,000
Foreign currency revaluations |  |  |  |  | 6,000
Other operating expense |  |  |  |  | 9,600
Miscellaneous Income |  |  |  |  | 4,400
ECR Business |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Consideration transferred | $ 3,400,000 |  |  |  |
Business combination consideration paid in cash | 2,800,000 |  |  |  |
ECR Business | Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds (payments) related to sales of businesses |  |  | 36,400 |  |
Gain on sale of businesses | 1,100,000 |  | 15,608 | 110,236 | 935,110
Equity method investment retained after disposal | 33,000 |  |  |  |
Deferred gain on disposal | 34,400 |  |  |  |
Revenues | $ 95,300 |  | $ 0 | $ 11,235 | $ 2,725,699

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