BENEFIT PLANS (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 04, 2021 USD ($) item	Sep. 30, 2021 USD ($) item	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) item entity	Sep. 30, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of funded, noncontributory defined benefit pension plans | entity				2
Number of unfunded, nonqualified pension plans | entity				3
Number of defined contribution plans		5		5
Normal retirement age				65 years
Expense recognized related to defined contribution plans | $		$ 14,877	$ 13,707	$ 49,899	$ 37,574
Subsequent Event [Member]
Defined Benefit Plan Disclosure [Line Items]
Purchase of irrevocable group annuity contract | $	$ 87,660
Percent of outstanding defined benefit pension obligation transferred	10.00%
Number of U.S. retirees and beneficiaries which insurance company is required to pay	2,764
Percent of retirees currently in payment status transferred to insurance company	50.00%
U.S. Concrete, Inc. [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of defined contribution plans		3		3