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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Sep. 27, 2019
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) | September 27, 2019 |  | September 28, 2018
| Gross carrying amount |  | Accumulated amortization |  | Net carrying amount |  | Gross carrying amount |  | Accumulated amortization |  | Net carrying amount
Customer relationships | 3.8 | $ | 25.6 |  |  | $ | (19.5 | ) |  | $ | 6.1 |  |  | $ | 31.7 |  |  | $ | (13.2 | ) |  | $ | 18.5 |
Developed technology and other | 4.2 | 94.4 |  |  | (48.9 | ) |  | 45.5 |  |  | 89.9 |  |  | (23.5 | ) |  | 66.4 |
Trademarks | 3.0 | 1.6 |  |  | (1.3 | ) |  | 0.3 |  |  | 1.6 |  |  | (0.8 | ) |  | 0.8 |
Capitalized software | 3.0 | — |  |  | — |  |  | — |  |  | 18.0 |  |  | (6.0 | ) |  | 12.0 |
Technology licenses | 2.4 | 24.9 |  |  | (4.8 | ) |  | 20.1 |  |  | $ | — |  |  | — |  |  | — |
IPR&D |  | 35.9 |  |  | — |  |  | 35.9 |  |  | $ | 46.0 |  |  | — |  |  | 46.0 |
Total intangible assets |  | $ | 182.4 |  |  | $ | (74.5 | ) |  | $ | 107.9 |  |  | $ | 187.2 |  |  | $ | (43.5 | ) |  | $ | 143.7 |
Schedule of Expected Amortization Expense | Annual amortization expense for the next five fiscal years related to intangible assets, excluding IPR&D, is expected to be as follows (in millions):
| 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Thereafter
Total amortization expense | $ | 42.2 |  |  | $ | 18.8 |  |  | $ | 5.1 |  |  | $ | 1.1 |  |  | $ | 1.1 |  |  | $ | 3.7 |

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