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Intangible Assets and Goodwill (Tables)
 12 Months Ended
Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets, Indefinite-Lived
Net amounts excluding fully amortized intangible assets, consist of the following (in millions):
March 31, 2023
Gross AmountAccumulated AmortizationNet Amount
Core and developed technology$7,296.2 $(4,103.4)$3,192.8 
Customer-related199.8 (128.0)71.8 
In-process research and development5.7 — 5.7 
Software licenses211.7 (113.0)98.7 
Distribution rights and other0.3 (0.3)— 
Total$7,713.7 $(4,344.7)$3,369.0 
March 31, 2022
Gross AmountAccumulated AmortizationNet Amount
Core and developed technology$7,390.2 $(3,571.5)$3,818.7 
Customer-related200.3 (112.4)87.9 
In-process research and development6.4 — 6.4 
Software licenses191.2 (61.2)130.0 
Distribution rights and other0.4 (0.3)0.1 
Total$7,788.5 $(3,745.4)$4,043.1 
Schedule of Intangible Assets, Finite-Lived
Net amounts excluding fully amortized intangible assets, consist of the following (in millions):
March 31, 2023
Gross AmountAccumulated AmortizationNet Amount
Core and developed technology$7,296.2 $(4,103.4)$3,192.8 
Customer-related199.8 (128.0)71.8 
In-process research and development5.7 — 5.7 
Software licenses211.7 (113.0)98.7 
Distribution rights and other0.3 (0.3)— 
Total$7,713.7 $(4,344.7)$3,369.0 
March 31, 2022
Gross AmountAccumulated AmortizationNet Amount
Core and developed technology$7,390.2 $(3,571.5)$3,818.7 
Customer-related200.3 (112.4)87.9 
In-process research and development6.4 — 6.4 
Software licenses191.2 (61.2)130.0 
Distribution rights and other0.4 (0.3)0.1 
Total$7,788.5 $(3,745.4)$4,043.1 
Schedule of Projected Amortization Expense
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 
Schedule of Amortization Expense by Intangible Asset Class Amortization expense attributed to intangible assets are assigned to cost of sales and operating expenses as follows (in millions):
Fiscal Year Ended March 31,
202320222021
Amortization expense charged to cost of sales$15.8 $12.4 $9.4 
Amortization expense charged to operating expense737.9 922.0 983.3 
Total amortization expense$753.7 $934.4 $992.7 
Schedule of Goodwill Activity
Goodwill activity by segment was as follows (in millions):
 Semiconductor Products Reporting UnitTechnology Licensing Reporting Unit
Balance at March 31, 2021$6,651.4 $19.2 
Additions3.0 — 
Balance at March 31, 2022$6,654.4 $19.2 
Additions— — 
Balance at March 31, 2023$6,654.4 $19.2