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SHARE-BASED AND OTHER COMPENSATION PLANS (Details - Cash-settled Awards - Roll forward of SARs and cash-settled RSUs (excluding stock salary) as well as the related expenses)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
shares
Change in SARs (based on target amounts) as well as the related expenses  
Restricted shares issued | shares 1,385,929
Restricted stock expense $ 43.3
Total unrecognized compensation costs $ 57.0
RSUs | Maximum  
Change in SARs (based on target amounts) as well as the related expenses  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 4 years 3 months
RSUs | Minimum  
Change in SARs (based on target amounts) as well as the related expenses  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 1 month 20 days