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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Common shares, par value (in dollars per share) $ 1 $ 1
Common shares, shares authorized (in shares) 1,400,000,000 1,400,000,000
Common shares, shares issued (in shares) 241,200,000 258,200,000
Common shares, shares outstanding (in shares) 241,200,000 258,200,000
Preferred shares, shares authorized (in shares) 1,000,000 1,000,000
Preferred shares, shares issued (in shares)   0
Preferred shares, shares outstanding (in shares)   0