FAIR VALUE MEASUREMENTS - Fair value on a recurring basis (Details) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Other long-term assets: | ||
| The company's recorded investment | $ 85.6 | $ 80.9 |
| Recurring basis | ||
| Other long-term assets: | ||
| Money market mutual funds | 0.5 | 1.1 |
| Investments measured at net asset value | 12.4 | 10.6 |
| The company's recorded investment | 5.2 | |
| Total assets at fair value | 12.9 | 16.9 |
| Recurring basis | Quoted prices in active market (Level 1) | ||
| Other long-term assets: | ||
| Money market mutual funds | 0.5 | 1.1 |
| The company's recorded investment | 5.2 | |
| Total assets at fair value | $ 0.5 | $ 6.3 |
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. No definition available.
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