Annual report pursuant to Section 13 and 15(d)

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Currency) (Details)

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THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Currency) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Foreign Currency Transaction Gain (Loss), before Tax [Abstract]                    
Net foreign currency transaction gains/(losses) $ (4.2) $ 4.4 $ 2.7 $ (8.0) $ (1.9) $ (6.6) $ 7.8 $ 3.1 $ (8.8) $ (35.3)