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Financial Instruments
3 Months Ended
Jun. 30, 2025
Financial Instruments [Abstract]  
Financial Instruments FINANCIAL INSTRUMENTS
Cash and Cash Equivalents
As of June 30, 2025 and March 31, 2025, our cash and cash equivalents were $1,518 million and $2,136 million, respectively. Cash equivalents were valued using quoted market prices or other readily available market information.
Short-Term Investments
Short-term investments consisted of the following as of June 30, 2025 and March 31, 2025 (in millions):
 
As of June 30, 2025
As of March 31, 2025
 Cost or
Amortized
Cost
Gross UnrealizedFair
Value
Cost or
Amortized
Cost
Gross UnrealizedFair
Value
 GainsLossesGainsLosses
Corporate bonds$40 $— $— $40 $46 $— $— $46 
U.S. Treasury securities21 — — 21 12 — — 12 
Foreign government securities— — — — 
Asset-backed securities47 — — 47 50 — — 50 
Short-term investments$112 $— $— $112 $112 $— $— $112 
The following table summarizes the amortized cost and fair value of our short-term investments, classified by stated maturity as of June 30, 2025 and March 31, 2025 (in millions):
 
As of June 30, 2025
As of March 31, 2025
 Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
Short-term investments
Due within 1 year$26 $26 $46 $46 
Due 1 year through 5 years84 84 63 63 
Due after 5 years
Short-term investments$112 $112 $112 $112