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FAIR VALUE MEASUREMENT (Narrative) (Details) - Fair Value, Inputs, Level 3 [Member] $ in Millions | Dec. 31, 2016 USD ($)
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Four Point Five Percentage Convertible Notes [Member] |
Convertible Debt, Fair Value Disclosures | $ 10.0
Four Point Five Percentage Convertible Notes [Member] | 2013 [Member] |
Convertible Debt, Fair Value Disclosures | 14.9
Four Point Five Percentage Convertible Notes [Member] | 2016 [Member] |
Convertible Debt, Fair Value Disclosures | 62.7
Seven Point Five Percentage Convertible Notes [Member] |
Convertible Debt, Fair Value Disclosures | $ 64.0

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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Convertible Security -URI http://asc.fasb.org/extlink&oid=6509036 + Details
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