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Intangible Assets and Goodwill | 12 Months Ended
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Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets and Goodwill | Intangible Assets and Goodwill Net amounts excluding fully amortized intangible assets, consist of the following (in millions):
|  | March 31, 2023
|  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Core and developed technology |  | $ | 7,296.2 |  |  | $ | (4,103.4) |  |  | $ | 3,192.8 |
Customer-related |  | 199.8 |  |  | (128.0) |  |  | 71.8 |
In-process research and development |  | 5.7 |  |  | — |  |  | 5.7 |
Software licenses |  | 211.7 |  |  | (113.0) |  |  | 98.7 |
Distribution rights and other |  | 0.3 |  |  | (0.3) |  |  | — |
Total |  | $ | 7,713.7 |  |  | $ | (4,344.7) |  |  | $ | 3,369.0 |
|  | March 31, 2022
|  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Core and developed technology |  | $ | 7,390.2 |  |  | $ | (3,571.5) |  |  | $ | 3,818.7 |
Customer-related |  | 200.3 |  |  | (112.4) |  |  | 87.9 |
In-process research and development |  | 6.4 |  |  | — |  |  | 6.4 |
Software licenses |  | 191.2 |  |  | (61.2) |  |  | 130.0 |
Distribution rights and other |  | 0.4 |  |  | (0.3) |  |  | 0.1 |
Total |  | $ | 7,788.5 |  |  | $ | (3,745.4) |  |  | $ | 4,043.1 |
The following is an expected amortization schedule for the intangible assets for fiscal 2024 through fiscal 2028, absent any future acquisitions or impairment charges (in millions):
Fiscal Year Ending March 31, |  | Amortization Expense
2024 |  | $ | 674.9 |
2025 |  | $ | 540.6 |
2026 |  | $ | 469.9 |
2027 |  | $ | 380.8 |
2028 |  | $ | 296.0 |
The Company amortizes intangible assets over their expected useful lives, which range between 1 and 15 years. Amortization expense attributed to intangible assets are assigned to cost of sales and operating expenses as follows (in millions):
| Fiscal Year Ended March 31, |  |  |  |
| 2023 |  | 2022 |  | 2021 |  |  |  |  |  |  |  |
Amortization expense charged to cost of sales | $ | 15.8 |  |  | $ | 12.4 |  |  | $ | 9.4 |  |  |  |  |  |  |  |  |
Amortization expense charged to operating expense | 737.9 |  |  | 922.0 |  |  | 983.3 |  |  |  |  |  |  |  |  |
Total amortization expense | $ | 753.7 |  |  | $ | 934.4 |  |  | $ | 992.7 |  |  |  |  |  |  |  |  |
The Company recognized impairment charges of $1.8 million in fiscal 2023 and $3.0 million in fiscal 2022. There were no impairment charges in fiscal 2021. Goodwill activity by segment was as follows (in millions):
| Semiconductor Products Reporting Unit |  | Technology Licensing Reporting Unit
Balance at March 31, 2021 | $ | 6,651.4 |  |  | $ | 19.2 |
Additions | 3.0 |  |  | — |
Balance at March 31, 2022 | $ | 6,654.4 |  |  | $ | 19.2 |
Additions | — |  |  | — |
Balance at March 31, 2023 | $ | 6,654.4 |  |  | $ | 19.2 |
At March 31, 2023, the Company applied a qualitative goodwill impairment test to its two reporting units, concluding it was not more likely than not that goodwill was impaired. Through March 31, 2023, the Company has never recorded a goodwill impairment charge.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI https://asc.fasb.org/topic&trid=2144416 + Details
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