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Financial Instruments (Tables)
12 Months Ended
Mar. 31, 2025
Financial Instruments [Abstract]  
Schedule of Short-Term Investments
Short-term investments consisted of the following as of March 31, 2025 and 2024 (in millions):
 
As of March 31, 2025
As of March 31, 2024
 Cost or
Amortized
Cost
Gross UnrealizedFair
Value
Cost or
Amortized
Cost
Gross UnrealizedFair
Value
 GainsLossesGainsLosses
Corporate bonds$46 $— $— $46 $130 $— $— $130 
U.S. Treasury securities12 — — 12 95 — — 95 
U.S. agency securities— — — — — — 
Commercial paper— — — — 66 — — 66 
Foreign government securities— — — — 
Asset-backed securities50 — — 50 41 — — 41 
Certificates of deposit— — — — 13 — — 13 
Short-term investments$112 $— $— $112 $362 $— $— $362 
Fair Value Of Short-Term Investments By Stated Maturity Date Schedule
The following table summarizes the amortized cost and fair value of our short-term investments, classified by stated maturity as of March 31, 2025 and 2024 (in millions):
 
As of March 31, 2025
As of March 31, 2024
 Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
Short-term investments
Due within 1 year$46 $46 $231 $231 
Due 1 year through 5 years63 63 126 126 
Due after 5 years
Short-term investments$112 $112 $362 $362