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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Oct. 01, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule Of Intangible Assets Excluding Goodwill | Intangible assets consist of the following (in millions):
|  | As of |  | As of
| Weighted average amortization period (years) | October 1, 2021 |  | October 2, 2020
| Gross carrying amount |  | Accumulated amortization |  | Net carrying amount |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount
Customer relationships and backlog | 2.5 | $ | 174.3 |  |  | $ | (44.0) |  |  | $ | 130.3 |  |  | $ | 18.2 |  |  | $ | (15.8) |  |  | $ | 2.4 |
Developed technology and other | 4.2 | 1,036.9 |  |  | (88.0) |  |  | 948.9 |  |  | 101.0 |  |  | (81.6) |  |  | 19.4 |
Trademarks | 3.0 | 1.0 |  |  | (1.0) |  |  | — |  |  | 1.6 |  |  | (1.5) |  |  | 0.1 |
Technology licenses | 2.6 | 48.4 |  |  | (23.9) |  |  | 24.5 |  |  | $ | 26.3 |  |  | (14.2) |  |  | 12.1 |
IPR&D |  | 594.9 |  |  | — |  |  | 594.9 |  |  | $ | 19.5 |  |  | — |  |  | 19.5 |
Total intangible assets |  | $ | 1,855.5 |  |  | $ | (156.9) |  |  | $ | 1,698.6 |  |  | $ | 166.6 |  |  | $ | (113.1) |  |  | $ | 53.5 |
Schedule of Expected Amortization Expense | Annual amortization expense for the next five fiscal years related to definite-lived intangible assets, excluding IPR&D, is expected to be as follows (in millions):
| 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | Thereafter
Amortization expense, cost of goods sold | $ | 156.1 |  |  | $ | 144.0 |  |  | $ | 129.5 |  |  | $ | 115.1 |  |  | $ | 100.8 |  |  | $ | 298.8 |
Amortization expense, operating expense | $ | 110.3 |  |  | $ | 40.3 |  |  | $ | 5.4 |  |  | $ | 2.3 |  |  | $ | 1.1 |  |  | $ | — |
Total amortization expense | $ | 266.4 |  |  | $ | 184.3 |  |  | $ | 134.9 |  |  | $ | 117.4 |  |  | $ | 101.9 |  |  | $ | 298.8 |

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