COMMITMENTS AND CONTINGENT LIABILITIES (Loss Contingencies) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
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Dec. 31, 2017 |
Dec. 31, 2017 |
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| Loss Contingencies [Line Items] | ||
| Accrual for costs of litigation settlement | $ 110.0 | |
| Songkick Litigation [Member] | Settled Litigation [Member] | ||
| Loss Contingencies [Line Items] | ||
| Accrual for costs of litigation settlement | $ 110.0 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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