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Consolidated Statements Of Financial Position (Parentheticals) - $ / shares
Dec. 31, 2021
Dec. 31, 2020
Common shares, par value (in dollars per share) $ 2.50 $ 2.50
Common stock, authorized (in shares) 1,400,000,000 1,400,000,000
Common shares issued (in shares) 1,112,440,400 1,112,227,784
Common shares outstanding (in shares) 638,841,656 671,351,360