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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Prepaid expenses and other current assets	$ 72,284		$ 76,980
Assets, Current	2,584,864		2,385,640
Goodwill	1,752,800		1,722,603
Liabilities and Equity	5,067,936		4,605,036
Other Accrued Liabilities, Current	152,712		105,461
Liabilities, Current	1,124,832		1,061,946
Assets	5,067,936		4,605,036
Deferred Tax Liabilities, Net, Noncurrent	147,306		143,967
Liabilities	2,933,113		2,475,310
Retained earnings	2,412,768	$ 2,349,300	2,307,462	$ 2,182,486	$ 2,124,535	$ 2,079,697
Accumulated other comprehensive income	(365,674)	$ (385,918)	(408,435)	$ (370,105)	$ (341,390)	$ (312,590)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 2,134,823		$ 2,129,726