COMMITMENTS AND CONTINGENCIES (Narrative) (Details) $ in Thousands	1 Months Ended					3 Months Ended	6 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2017	Sep. 30, 2017 item	Mar. 31, 2016 mi	May 31, 2007 entity mi	Dec. 31, 2021 USD ($) item	Jun. 30, 2022 USD ($) item defendant	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)
Loss Contingencies [Line Items]
Asset retirement obligations	$ 283,200					$ 315,200	$ 321,100	$ 319,700	$ 286,400	$ 285,400
Number of groundwater extraction wells | item			2
Contingency loss							0
Lease liabilities						$ 787,600	$ 774,900		$ 487,900
Vulcan Material [Member]
Loss Contingencies [Line Items]
Judge ruled allocation of fault among defendants, percentage	15.00%	15.00%
Texas Brine [Member]
Loss Contingencies [Line Items]
Number of defendants | defendant							3
New York Water District Cases [Member]
Loss Contingencies [Line Items]
Number of cases | item							27
Cooperating Parties Group [Member]
Loss Contingencies [Line Items]
Number of other companies to perform a Remedial Investigation/ Feasibility Study related to the Lower Passaic River Clean-Up lawsuit | entity					70
Number of miles of the River used in the Remedial Investigation/Feasibility Study | mi					17
Number of miles for bank-to-bank dredging remedy | mi				8
Texas Brine and Occidental Chemical Co [Member]
Loss Contingencies [Line Items]
Judge ruled allocation of fault among defendants, percentage	20.00%
Occidental Chemical Co [Member]
Loss Contingencies [Line Items]
Judge ruled allocation of fault among defendants, percentage	30.00%	50.00%
Texas Brine [Member]
Loss Contingencies [Line Items]
Judge ruled allocation of fault among defendants, percentage	55.00%	35.00%
Number of cases | item							2
LADWP [Member]
Loss Contingencies [Line Items]
Number of planned new treatment capabilities | item						2
Maximum [Member] | EPA [Member]
Loss Contingencies [Line Items]
Estimated implementation costs							$ 1,380,000
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Outstanding standby letters of credit							$ 102,900