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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Jun. 26, 2020
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) | June 26, 2020 |  |  |  |  |  | September 27, 2019 |  |  |  |
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | 5.0 | $ | 18.2 |  |  | $ | (14.8) |  |  | $ | 3.4 |  |  | $ | 25.6 |  |  | $ | (19.5) |  |  | $ | 6.1 |
Developed technology and other | 3.8 | 101.0 |  |  | (74.5) |  |  | 26.5 |  |  | 94.4 |  |  | (48.9) |  |  | 45.5 |
Trademarks | 3.0 | 1.6 |  |  | (1.6) |  |  | — |  |  | 1.6 |  |  | (1.3) |  |  | 0.3 |
Technology licenses | 3.1 | 25.1 |  |  | (11.6) |  |  | 13.5 |  |  | 24.9 |  |  | (4.8) |  |  | 20.1 |
IPR&D |  | 19.5 |  |  | — |  |  | 19.5 |  |  | 35.9 |  |  | — |  |  | 35.9 |
Total intangible assets |  | $ | 165.4 |  |  | $ | (102.5) |  |  | $ | 62.9 |  |  | $ | 182.4 |  |  | $ | (74.5) |  |  | $ | 107.9 |
Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years | 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):
| Remaining 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | Thereafter
Amortization expense, cost of goods sold | $ | 5.3 |  |  | $ | 6.0 |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 1.8 |
Amortization expense, operating expense | $ | 5.0 |  |  | $ | 16.2 |  |  | $ | 5.0 |  |  | $ | 1.0 |  |  | $ | 0.9 |  |  | $ | 1.9 |
Total amortization expense | $ | 10.3 |  |  | $ | 22.2 |  |  | $ | 5.1 |  |  | $ | 1.1 |  |  | $ | 1.0 |  |  | $ | 3.7 |

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