PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Additional) (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2021
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Contribution, Percentage, Maximum	7.00%
Defined Contribution Plan, Cost	$ 5.3	$ 6.0
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 11.8
Forecast [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount			$ 19.0