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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
CONSOLIDATED BALANCE SHEETS    
Trade receivables allowance $ 28 $ 33
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized 250,000,000 250,000,000
Common stock, shares issued 187,752,045 189,305,018
Treasury shares 31,396,951 31,911,047