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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Accounts receivable, allowance for credit losses, current $ 0.0 $ 0.0
Preferred Stock, shares authorized (in shares) 100,000,000  
Preferred Stock, shares outstanding (in shares) 0  
Common Stock, par value per share (in dollars per share) $ 0.01 $ 0.01
Common Stock, shares authorized (in shares) 450,000,000.0 450,000,000.0
Common Stock, shares issued (in shares) 188,600,000 187,100,000
Common Stock, shares outstanding (in shares) 128,700,000 143,900,000
Preferred Stock    
Preferred Stock, par value per share (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, shares authorized (in shares) 100,000,000.0 100,000,000.0
Preferred Stock, shares issued (in shares) 0 0
Preferred Stock, shares outstanding (in shares) 0 0
Series Common Stock    
Common Stock, par value per share (in dollars per share) $ 0.01 $ 0.01
Common Stock, shares authorized (in shares) 50,000,000 50,000,000.0
Common Stock, shares issued (in shares) 0 0
Common Stock, shares outstanding (in shares) 0 0
Common Stock    
Common Stock, par value per share (in dollars per share) $ 0.01  
Common Stock, shares authorized (in shares) 450,000,000