XML 105 R102.htm IDEA: XBRL DOCUMENT v3.20.1
EARNINGS PER SHARE - Narrative (Details) - shares
12 Months Ended
Dec. 20, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award        
Antidilutive awards excluded from computation of earnings per share (in shares)   3,900,000   4,000,000.0
Weighted average convertible shares (in shares)   0 2,692,000 0
Anti-dilutive convertible shares (in shares)     3,546,000  
Convertible Common Stock        
Share-based Compensation Arrangement by Share-based Payment Award        
Anti-dilutive convertible shares (in shares)   2,400,000 2,900,000  
Redeemable Convertible Preferred Stock        
Share-based Compensation Arrangement by Share-based Payment Award        
Convertible preferred stock, shares outstanding (in shares)   300,000 100,000  
Class A Common Stock | Debt Exchange Transaction On December 20 2017        
Share-based Compensation Arrangement by Share-based Payment Award        
Exchange of convertible senior notes (in shares) 14,600,000 14,600,000    
Redeemable Convertible Preferred Stock        
Share-based Compensation Arrangement by Share-based Payment Award        
Antidilutive awards excluded from computation of earnings per share (in shares)   54,000,000.0 2,700,000