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Employee Stock Purchase and Stock Incentive Plans - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares | 12 Months Ended
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Sep. 26, 2025 | Sep. 27, 2024 | Sep. 29, 2023
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Number of stock options outstanding, beginning balance (in shares) | 90,796 | 217,481 | 439,349
Number of stock options, Exercised (in shares) | (41,618) | (132,898) | (215,649)
Number of stock options, Canceled or expired (in shares) | (841) | (7,608) | (6,219)
Number of stock options, Adjustment to Jacobs awards related to the Separation Transaction (in shares) |  | 13,821 |
Number of stock options outstanding, ending balance (in shares) | 48,337 | 90,796 | 217,481
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] |  |  |
Weighted Average Exercise Price, beginning balance (in dollars per share) | $ 19.03 | $ 31.43 | $ 35.77
Weighted Average Exercise Price, Exercised (in dollars per share) | 28.45 | 37.25 | 40.61
Weighted Average Exercise Price, Canceled or expired (in dollars per share) | 11.68 | 20.44 | 19.73
Weighted Average Exercise Price, Adjustment to Jacobs awards related to the Separation Transaction (in dollars per share) |  | 0 |
Weighted Average Exercise Price, ending balance (in dollars per share) | $ 11.03 | $ 19.03 | $ 31.43

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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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