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Stock-Based Compensation (Tables) | 6 Months Ended
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Mar. 29, 2025
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation Expense in Consolidated Statements of Operations | The following presents stock-based compensation expense in the Company’s Consolidated Statements of Income:
| Three Months Ended |  | Six Months Ended
| March 29, 2025 |  | March 30, 2024 |  | March 29, 2025 |  | March 30, 2024
Cost of revenues | $ | 3.3 |  |  | $ | 3.2 |  |  | $ | 6.8 |  |  | $ | 5.9 |
Research and development | 2.5 |  |  | 3.0 |  |  | 5.0 |  |  | 6.2 |
Selling and marketing | 4.0 |  |  | 3.6 |  |  | 7.7 |  |  | 6.9 |
General and administrative | 18.6 |  |  | 16.0 |  |  | 39.0 |  |  | 35.5 |
| $ | 28.4 |  |  | $ | 25.8 |  |  | $ | 58.5 |  |  | $ | 54.5 |
Weighted-Average Assumptions Utilized to Value Stock Options | The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:
| Three Months Ended |  | Six Months Ended
| March 29, 2025 |  | March 30, 2024 |  | March 29, 2025 |  | March 30, 2024
Risk-free interest rate | 4.2 | % |  | 4.4 | % |  | 4.2 | % |  | 4.4 | %
Expected volatility | 32.5 | % |  | 33.4 | % |  | 32.5 | % |  | 33.4 | %
Expected life (in years) | 4.8 |  | 4.8 |  | 4.8 |  | 4.8
Dividend yield | — |  |  | — |  |  | — |  |  | — |
Weighted average fair value of options granted | $ | 22.06 |  |  | $ | 26.27 |  |  | $ | 26.30 |  |  | $ | 25.04 |

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- Definition Schedule of share-based compensation expense. + References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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