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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 13 $ 11
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, authorized (in shares) 10,000,000 10,000,000
Preferred stock, outstanding (in shares) 0 0
Preferred stock, issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 400,000,000 400,000,000
Common stock, issued (in shares) 135,500,000 135,500,000
Common stock, outstanding (in shares) 89,800,000 91,900,000
Treasury stock (in shares) 45,700,000 43,600,000