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STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement of Stockholders' Equity [Abstract] |  |  |
Treasury shares | 10,900,000 | 11,400,000 | 11,200,000
Treasury stock reissued | 2,800,000 | 3,100,000 | 1,300,000

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