DEBT (Details - Convertible Note Hedge and Warrant Transactions) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	May 31, 2017	Mar. 31, 2018	May 24, 2017
Debt Instrument [Line Items]
Net proceeds from the Convertible Notes used to pay for the cost of the Convertible Note Hedge	$ 18.1
Payment of convertible note hedge transactions	$ 61.5
Number of shares covered by the hedge transactions	1.4
Initial conversion price per share	$ 207.63
Strike price of warrants sold	$ 266.39
Premium of warrant strike price over sales price of common stock	70.00%
Share price		$ 328.15	$ 156.70
Proceeds from the sale of warrants	$ 43.4