THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Currency) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Jun. 30, 2018 |
Dec. 31, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Foreign Currency Transaction Gain (Loss), before Tax [Abstract] | |||||||
| Net foreign currency transaction gains/(losses) | $ 8.4 | $ (4.2) | $ 4.4 | $ 2.7 | $ (11.6) | $ 3.1 | $ (8.8) |
| X | ||||||||||
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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