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STOCK-BASED COMPENSATION - Additional Information (Details)
shares in Millions, $ in Millions
1 Months Ended 9 Months Ended 12 Months Ended
Jan. 31, 2018
Sep. 30, 2020
USD ($)
company
shares
Dec. 31, 2019
PSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   3 years  
PSUs | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   22.20%  
PSUs | Tranche Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   22.20%  
PSUs | Tranche Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   22.20%  
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   3 years  
RSUs | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   11.10%  
RSUs | Tranche Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   11.10%  
RSUs | Tranche Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   11.10%  
2017 and prior PSU awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Reserved right to pay percentage in cash (up to)   100.00%  
Award performance period   3 years  
2017 and prior PSU awards | Relative TSR and EBIT CAGR      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award intended to pay out in stock     50.00%
Percentage recorded as a liability     50.00%
Reserved percentage of award intended to pay out in cash     100.00%
2017 and prior PSU awards | TSR      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   3 years  
Percentage of award vesting   50.00%  
Number of companies forming peer group | company   300  
Base award percentage of Total Shareholder Return   175.00%  
2017 and prior PSU awards | TSR | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   200.00%  
2018 and later PSU - E B I T C A G R based | TSR | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   0.00%  
2018 and later PSU - E B I T C A G R based | EBIT CAGR      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years 2 years  
Percentage of award vesting   50.00%  
Period in which expense is recognized   3 years  
Average payout percentage of base award   114.00%  
Total shares base award (in shares) | shares   0.1  
Cash portion | $   $ 4.1  
2018 and later PSU - E B I T C A G R based | EBIT CAGR | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   0.00%  
2018 and later PSU - E B I T C A G R based | EBIT CAGR | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   200.00%  
2018 and later PSU - E B I T C A G R based | EBIT CAGR, one-time vesting period transition      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 2 years    
Stock-based retirement plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Participants in executive stock unit   10.00%  
Company contributions in first match   50.00%  
Company contributions in second match   50.00%  
Stock units are converted to common stock ratio   1