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v3.20.2

Financial Instruments (Tables) | 6 Months Ended
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Sep. 30, 2020
Financial Instruments [Abstract] |
Fair Value Of Short-Term Investments | Short-term investments consisted of the following as of September 30, 2020 and March 31, 2020 (in millions):
| As of September 30, 2020 |  | As of March 31, 2020
| Cost or Amortized Cost |  | Gross Unrealized |  | Fair Value |  | Cost or Amortized Cost |  | Gross Unrealized |  | Fair Value
| Gains |  | Losses |  | Gains |  | Losses |
Corporate bonds | $ | 513 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 514 |  |  | $ | 684 |  |  | $ | 1 |  |  | $ | (4) |  |  | $ | 681 |
U.S. Treasury securities | 724 |  |  | 2 |  |  | — |  |  | 726 |  |  | 530 |  |  | 4 |  |  | — |  |  | 534 |
U.S. agency securities | 5 |  |  | — |  |  | — |  |  | 5 |  |  | 8 |  |  | — |  |  | — |  |  | 8 |
Commercial paper | 358 |  |  | — |  |  | — |  |  | 358 |  |  | 377 |  |  | — |  |  | — |  |  | 377 |
Foreign government securities | 75 |  |  | — |  |  | — |  |  | 75 |  |  | 42 |  |  | — |  |  | — |  |  | 42 |
Asset-backed securities | 237 |  |  | 2 |  |  | — |  |  | 239 |  |  | 273 |  |  | — |  |  | (4) |  |  | 269 |
Certificates of deposit | 55 |  |  | — |  |  | — |  |  | 55 |  |  | 56 |  |  | — |  |  | — |  |  | 56 |
Short-term investments | $ | 1,967 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 1,972 |  |  | $ | 1,970 |  |  | $ | 5 |  |  | $ | (8) |  |  | $ | 1,967 |
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 September 30, 2020 and March 31, 2020 (in millions):
| As of September 30, 2020 |  | As of March 31, 2020
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Short-term investments |  |  |  |  |  |  |
Due within 1 year | $ | 1,600 |  |  | $ | 1,603 |  |  | $ | 1,568 |  |  | $ | 1,567 |
Due 1 year through 5 years | 360 |  |  | 362 |  |  | 395 |  |  | 393 |
Due after 5 years | 7 |  |  | 7 |  |  | 7 |  |  | 7 |
Short-term investments | $ | 1,967 |  |  | $ | 1,972 |  |  | $ | 1,970 |  |  | $ | 1,967 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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