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Earnings per Share (Weighted-average Number of Ordinary Shares) (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Notes to Consolidated Financial Statements [Abstract]      
Balance as at January 1 1,280,242 1,279,379 1,278,084
Shares issued during the year 223 29 98
Shares vested 2,342 618 768
Weighted average number of ordinary shares used in computation of the basic earnings per share 1,282,807 1,280,026 1,278,950