CONTRIBUTING EMPLOYEE OWNERSHIP PLAN (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan Expense	$ 29.9	$ 28.6	$ 29.0
Defined Contribution Plan Matching Expense	$ 15.8	$ 14.9	$ 11.5
Initial vesting period vested percentage	25.00%
Additional vesting percentage for each additional year of service	25.00%
Vesting percentage after five years	100.00%
Number of days an employee is prohibited from trading out of the fund to which the transfer was made	7 days
Minimum
Defined Contribution Plan Disclosure [Line Items]
Contribution To Individual Retirement Account Percentage Of Employees Eligible Compensation	5.00%
Vesting period (in years)	2 years
Maximum
Defined Contribution Plan Disclosure [Line Items]
Contribution To Individual Retirement Account Percentage Of Employees Eligible Compensation	7.50%
Vesting period (in years)	5 years