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STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Issuance of treasury shares under stock purchase plans, ordinary shares	6,686,810	2,595,563	3,372,115
Issuance of treasury shares under stock purchase plans, ordinary shares withheld for taxes	45,592	50,644	37,310
Treasury shares	10,341,000	9,535,992	12,298,434

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Issuance of treasury shares under stock plans, ordinary shares withheld for taxes.

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Number of new stock issued during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Number of shares that have been repurchased during the period and are being held in treasury.

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