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INVESTMENTS IN EQUITY SECURITIES (Narrative) (Details) - NorAm Drilling - USD ($) shares in Millions, $ in Millions | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items] |  |
Investment owned, balance (in shares) | 1.3 | 1.3
Equity securities, unrealized gain (loss) | $ (0.2) | $ (0.8)
Foreign exchange loss | $ 0.2 | $ 0.6

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