Aggregate dividends paid during the period for each share of common stock outstanding.

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Face amount or stated value per share of common stock.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Purchase price of common stock expressed as a percentage of its fair value.

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SHAREHOLDERS' EQUITY (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2017 ₪ / shares	Jan. 10, 2017 USD ($)	Dec. 31, 2016 ₪ / shares	Dec. 31, 2011 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to non-vested stock options and restricted stock unit	$ 92,650
Unrecognized compensation expense related to non-vested stock options and restricted stock unit, expected to be recognized, years	4 years
Cash dividend paid, per share \| $ / shares	$ 0.16	$ 0.64	$ 0.64
Ordinary shares, par value \| ₪ / shares				₪ 1.00		₪ 1.00
Maximum [Member] \| Treasury shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount					$ 150,000		$ 100,000
2016 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of options, as a percent of fair market value of ordinary shares	1.83%
Options and resticted share granted \| shares	1,099,141
American Depositary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares, par value \| ₪ / shares				₪ 1.00
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value, options granted \| $ / shares	$ 61.54	$ 46.24	$ 32.58
Total intrinsic value, options exercised	$ 42,592	$ 35,664	$ 40,519