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Fair Value Measurements, Cash, Cash Equivalent and Investments (Tables) | 9 Months Ended
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Nov. 30, 2021
Cash and Cash Equivalents [Abstract] |
Components of Cash, Cash Equivalents and Investments | The components of cash, cash equivalents and investments by fair value level as at November 30, 2021 were as follows:
| Cost Basis (1) |  | Unrealized Gains |  | Unrealized Losses |  |  |  | Fair Value |  | Cash and Cash Equivalents |  | Short-term Investments |  | Long-term Investments |  | Restricted Cash Equivalents |  |
Bank balances | $ | 109 |  |  | $ | — |  |  | $ | — |  |  |  |  | $ | 109 |  |  | $ | 108 |  |  | $ | — |  |  | $ | — |  |  | $ | 1 |  |  |
Other investments | 8 |  |  | — |  |  | — |  |  |  |  | 8 |  |  | — |  |  | — |  |  | 8 |  |  | — |  |  |
| 117 |  |  | — |  |  | — |  |  |  |  | 117 |  |  | 108 |  |  | — |  |  | 8 |  |  | 1 |  |  |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities | 10 |  |  | — |  |  | (9) |  |  |  |  | 1 |  |  | — |  |  | 1 |  |  | — |  |  | — |  |  |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term deposits, certificates of deposits, and GIC's | 140 |  |  | — |  |  | — |  |  |  |  | 140 |  |  | 53 |  |  | 59 |  |  | — |  |  | 28 |  |  |
Bankers’ acceptances/bearer deposit notes | 20 |  |  | — |  |  | — |  |  |  |  | 20 |  |  | 12 |  |  | 8 |  |  | — |  |  | — |  |  |
Commercial paper | 192 |  |  | — |  |  | — |  |  |  |  | 192 |  |  | 40 |  |  | 152 |  |  | — |  |  | — |  |  |
Non-U.S. promissory notes | 127 |  |  | — |  |  | — |  |  |  |  | 127 |  |  | 46 |  |  | 81 |  |  | — |  |  | — |  |  |
Non-U.S. government sponsored enterprise notes | 129 |  |  | — |  |  | — |  |  |  |  | 129 |  |  | — |  |  | 129 |  |  | — |  |  | — |  |  |
Non-U.S. treasury bills/notes | 24 |  |  | — |  |  | — |  |  |  |  | 24 |  |  | 12 |  |  | 12 |  |  | — |  |  | — |  |  |
| 632 |  |  | — |  |  | — |  |  |  |  | 632 |  |  | 163 |  |  | 441 |  |  | — |  |  | 28 |  |  |
Level 3: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other investments | 17 |  |  | 5 |  |  | — |  |  |  |  | 22 |  |  | — |  |  | — |  |  | 22 |  |  | — |  |  |
| $ | 776 |  |  | $ | 5 |  |  | $ | (9) |  |  |  |  | $ | 772 |  |  | $ | 271 |  |  | $ | 442 |  |  | $ | 30 |  |  | $ | 29 |  |  |
______________________________ (1) Cost basis for other investments includes the effect of returns of capital. The components of cash, cash equivalents and investments by fair value level as at February 28, 2021 were as follows:
| Cost Basis |  |  |  | Unrealized Losses |  |  |  | Fair Value |  | Cash and Cash Equivalents |  | Short-term Investments |  | Long-term Investments |  | Restricted Cash Equivalents |  | Restricted Short-term Investments
Bank balances | $ | 165 |  |  |  |  | $ | — |  |  |  |  | $ | 165 |  |  | $ | 165 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Other investments | 37 |  |  |  |  | — |  |  |  |  | 37 |  |  | — |  |  | — |  |  | 37 |  |  | — |  |  | — |
| 202 |  |  |  |  | — |  |  |  |  | 202 |  |  | 165 |  |  | — |  |  | 37 |  |  | — |  |  | — |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities | 10 |  |  |  |  | (7) |  |  |  |  | 3 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term deposits, certificates of deposits, and GICs | 138 |  |  |  |  | — |  |  |  |  | 138 |  |  | 7 |  |  | 103 |  |  | — |  |  | 4 |  |  | 24 |
Bearer deposit notes | 40 |  |  |  |  | — |  |  |  |  | 40 |  |  | — |  |  | 40 |  |  | — |  |  | — |  |  | — |
Commercial paper | 162 |  |  |  |  | — |  |  |  |  | 162 |  |  | 15 |  |  | 147 |  |  | — |  |  | — |  |  | — |
Non-U.S. promissory notes | 55 |  |  |  |  | — |  |  |  |  | 55 |  |  | 26 |  |  | 29 |  |  | — |  |  | — |  |  | — |
Non-U.S. government sponsored enterprise notes | 154 |  |  |  |  | — |  |  |  |  | 154 |  |  | 1 |  |  | 153 |  |  | — |  |  | — |  |  | — |
Non-U.S. treasury bills/notes | 25 |  |  |  |  | — |  |  |  |  | 25 |  |  | — |  |  | 25 |  |  | — |  |  | — |  |  | — |
Corporate notes/bonds | 25 |  |  |  |  | — |  |  |  |  | 25 |  |  | — |  |  | 25 |  |  | — |  |  | — |  |  | — |
| 599 |  |  |  |  | — |  |  |  |  | 599 |  |  | 49 |  |  | 522 |  |  | — |  |  | 4 |  |  | 24 |
| $ | 811 |  |  |  |  | $ | (7) |  |  |  |  | $ | 804 |  |  | $ | 214 |  |  | $ | 525 |  |  | $ | 37 |  |  | $ | 4 |  |  | $ | 24 |
Schedule of Cash and Cash Equivalents | The following table provides a reconciliation of cash, cash equivalents, restricted cash, and restricted cash equivalents as at November 30, 2021 and February 28, 2021 from the consolidated balance sheets to the consolidated statements of cash flows:
| As at
| November 30, 2021 |  | February 28, 2021
Cash and cash equivalents | $ | 271 |  |  | $ | 214 |
Restricted cash and cash equivalents | 29 |  |  | 4 |
Total cash, cash equivalents, restricted cash, and restricted cash equivalents presented in the consolidated statements of cash flows | $ | 300 |  |  | $ | 218 |
Contractual Maturities of Available-for-Sale Investments | The contractual maturities of available-for-sale investments as at November 30, 2021 and February 28, 2021 were as follows:
| As at |  |
| November 30, 2021 |  |  |  | February 28, 2021 |  |
| Cost Basis |  | Fair Value |  |  |  | Cost Basis |  | Fair Value |  |
Due in one year or less | $ | 632 |  |  | $ | 632 |  |  |  |  | $ | 599 |  |  | $ | 599 |  |  |
No fixed maturity | 10 |  |  | 1 |  |  |  |  | 10 |  |  | 3 |  |  |
| $ | 642 |  |  | $ | 633 |  |  |  |  | $ | 609 |  |  | $ | 602 |  |  |

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