XML 61 R48.htm IDEA: XBRL DOCUMENT v3.10.0.1
STOCK-BASED COMPENSATION - Additional Information (Details)
shares in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Jan. 31, 2018
Jun. 30, 2018
company
shares
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
ESOP, automatic employee match, percent   50.00%  
ESOP, employer match, percent   50.00%  
ESOP, maximum election as a percentage of salary, percent   20.00%  
ESOP, maximum employee contribution, percent   100.00%  
Performance Stock Unit (PSU) awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award intended to pay out in stock   65.00%  
Percentage recorded as a liability   35.00%  
Reserved percentage of award intended to pay out in cash   100.00%  
Vesting period   3 years 2 years
Award performance period   3 years  
Performance Stock Unit (PSU) awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   175.00%  
Growth Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award performance period   2 years  
Base target share award (less than) (in shares) | shares   0.1  
Reserved right to pay percentage in cash (up to)   100.00%  
Growth Performance Stock Units | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   0.00%  
Growth Performance Stock Units | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   250.00%  
Relative TSR and EBIT CAGR | Performance Stock Unit (PSU) awards      
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%  
TSR | Performance Stock Unit (PSU) awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   50.00%  
Vesting period   3 years  
Number of companies forming peer group | company   320  
TSR | Performance Stock Unit (PSU) awards | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   0.00%  
TSR | Performance Stock Unit (PSU) awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   200.00%  
EBIT CAGR | Performance Stock Unit (PSU) awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of award vesting   50.00%  
Period in which expense is recognized   3 years  
EBIT CAGR | Performance Stock Unit (PSU) awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Base award percentage of Total Shareholder Return   200.00%  
EBIT CAGR, one-time vesting period transition | Performance Stock Unit (PSU) awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 2 years