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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 8.1 $ 7.9
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 50,000,000.0 50,000,000.0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 1.00 $ 1.00
Common stock, shares authorized (in shares) 1,050,000,000 1,050,000,000
Common stock, shares issued (in shares) 649,100,000 646,300,000
Common stock, shares outstanding (in shares) 607,900,000 608,300,000
Treasury stock (in shares) 41,200,000 38,000,000.0