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Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Class of Stock [Line Items]    
Preferred stock, XRX separation shares issued (in shares)   120,000
Preferred Stock, Liquidation Preference, Value   $ 120.0
Preferred stock aggregate fair value   $ 142.0
Preferred stock, dividend rate, percentage   8.00%
Preferred stock annual dividends   $ 9.6
Convertible Preferred Stock, Shares Reserved for Future Issuance   5,393,000
Total conversion of preferred stock shares into common stock, initial conversion price per share (in dollars per share)   $ 22.25
Convertible Preferred Stock, Terms of Conversion 1.3694  
Common Stock [Member]    
Class of Stock [Line Items]    
Preferred stock converted into common shares (in shares)   44.9438