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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Current Assets    
Accounts receivable, allowance for credit loss $ 5 $ 5
Shareholders’ Equity    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued (in shares) 153,257,799 143,557,479
Common stock, shares outstanding (in shares) 153,257,799 143,557,479