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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Jun. 30, 2023
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 30, 2023 |  | September 30, 2022
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships and backlog | 2.3 | $ | 154.6 |  |  | $ | (151.0) |  |  | $ | 3.6 |  |  | $ | 154.6 |  |  | $ | (122.3) |  |  | $ | 32.3 |
Developed technology and other | 6.1 | 1,290.4 |  |  | (337.5) |  |  | 952.9 |  |  | 1,280.9 |  |  | (209.2) |  |  | 1,071.7 |
Technology licenses | 2.7 | 72.1 |  |  | (30.3) |  |  | 41.8 |  |  | 105.1 |  |  | (45.2) |  |  | 59.9 |
In-process research and development |  | 271.3 |  |  | — |  |  | 271.3 |  |  | 280.8 |  |  | — |  |  | 280.8 |
Total intangible assets |  | $ | 1,788.4 |  |  | $ | (518.8) |  |  | $ | 1,269.6 |  |  | $ | 1,821.4 |  |  | $ | (376.7) |  |  | $ | 1,444.7 |
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 2023 |  | 2024 |  | 2025 |  | 2026 |  | 2027 |  | Thereafter
Amortization expense | $ | 51.2 |  |  | $ | 178.1 |  |  | $ | 154.9 |  |  | $ | 127.1 |  |  | $ | 111.8 |  |  | $ | 375.2 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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