THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Currency) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Foreign Currency Transaction Gain (Loss), before Tax [Abstract]
Net foreign currency transaction gains / (losses)	$ (8.4)	$ 3.2	$ 3.1	$ (11.6)

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 20
-Section 45
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