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v3.23.2

SHORT-TERM INVESTMENTS: (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Short-term investment: |  |  |  |  |
Trading securities |  |  |  |  | $ 208.0
Weighted average interest rate (as a percent) |  |  |  |  | 4.50%
Available-for-sale | $ 0.3 |  | $ 0.3 |  | $ 0.3
Weighted average interest rate (as a percent) |  |  | 0.80% |  | 0.80%
Total | 0.3 |  | $ 0.3 |  | $ 208.3
Trading: |  |  |  |  |
Interest earned | 3.5 | $ 1.1 | 6.9 | $ 1.4 |
Available-for-sale: |  |  |  |  |
Interest earned | $ 23.2 | 4.3 | $ 44.5 | 8.9 |
Investment redeemed |  | 0.1 |  | 0.1 |
Maximum |  |  |  |  |
Available-for-sale: |  |  |  |  |
Interest earned |  | $ 0.1 |  | $ 0.1 |

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