ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Prepaid expenses and other current assets	$ 62,406	$ 76,980
Assets, Current	2,513,750	2,385,640
Goodwill	1,740,771	1,722,603
Liabilities and Equity	4,984,638	4,605,036
Other Accrued Liabilities, Current	169,619	105,461
Liabilities, Current	1,150,722	1,061,946
Assets	4,984,638	4,605,036
Deferred Tax Liabilities, Net, Noncurrent	145,501	143,967
Liabilities	2,788,276	2,475,310
Retained earnings	2,349,300	2,307,462	$ 2,124,535	$ 2,079,697
Accumulated other comprehensive income	(385,918)	(408,435)	$ (341,390)	$ (312,590)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 2,196,362	$ 2,129,726

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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