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FINANCING ARRANGEMENTS - Note Hedges and Warrants (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 09, 2016 | Dec. 31, 2016 | Jun. 30, 2018 | Apr. 04, 2016
Debt Disclosure [Abstract] |  |  |  |
Cost of convertible note hedges |  | $ 59.1 |  |
Number of shares available to be purchased (in shares) | 2.3 |  |  |
Strike price (in usd per share) | $ 108.00 |  |  |
Cash proceeds from issuance of warrants |  |  | $ 35.5 |
Exercise price (in usd per share) |  |  |  | $ 170.00

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- Definition Hedging Activity, Shares Covered + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The premium (cost) of a hedge, expensed during the period. + References No definition available. + Details
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- Definition The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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