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Earnings per Share (Weighted-average Number of Ordinary Shares Diluted) (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Notes to Consolidated Financial Statements [Abstract]      
Weighted average number of ordinary shares used in computation of the basic earnings per share 1,280,026 1,278,950 1,277,209
Effect of stock options and restricted shares 247 3,106 2,572
Weighted average number of ordinary shares used in computation of the diluted earnings per share 1,280,273 1,282,056 1,279,781