Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Assumptions Used and Resulting Weighted Average Fair Value of Stock Option Granted (Details)

v3.10.0.1
STOCK-BASED COMPENSATION - Assumptions Used and Resulting Weighted Average Fair Value of Stock Option Granted (Details)
3 Months Ended
Jun. 30, 2018
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility, minimum 24.00%
Expected volatility, maximum 29.00%
Weighted average expected volatility 25.00%
Weighted average dividend yield 2.70%
Risk-free interest rate, minimum 2.10%
Risk-free interest rate, maximum 3.00%
Weighted average fair value at date of grant (in USD per share) $ 16.00
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 6 years 1 month 6 days
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 7 years 6 months