ACQUISITIONS AND DIVESTITURES (Schedule of Business Acquisitions) (Details) - USD ($) $ in Millions			9 Months Ended
		Aug. 26, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Significant Acquisitions And Disposals [Line Items]
Noncontrolling interest			$ (23.2)	$ (23.0)	$ (23.1)	$ (22.7)	$ (0.0)	$ (0.0)
Goodwill	[1]		58.7
Cash			528.0	$ 1,634.5
Acquisitions 2022 [Member]
Significant Acquisitions And Disposals [Line Items]
Cash			528.0
Payable to seller			65.4
Total fair value of purchase consideration			593.4
Accounts and notes receivable, net			28.5
Inventories			15.3
Other current assets			0.3
Property, plant & equipment			517.0
Intangible assets, Contractual rights in place			61.2
Deferred income taxes, net			(12.1)
Other liabilities assumed			(28.9)
Net identifiable assets acquired			581.3
Goodwill			12.1
U.S. Concrete [Member]
Significant Acquisitions And Disposals [Line Items]
Cash	[2]		1,634.5
Total fair value of purchase consideration		$ 1,634.5	1,634.5
Accounts and notes receivable, net			235.6
Inventories			80.6
Other current assets			8.7
Property, plant & equipment			1,086.2
Operating lease right-of-use assets			217.6
Other noncurrent assets			5.3
Deferred income taxes, net			(241.4)
Debt assumed			(443.7)
Other liabilities assumed			(546.2)
Noncontrolling interest			(22.3)
Net identifiable assets acquired			1,063.3
Goodwill			571.2
Cash		1,268.5
Obligations paid on acquisition date		384.4
Cash acquired		$ 18.4
U.S. Concrete [Member] | Contractual Rights In Place [Member]
Significant Acquisitions And Disposals [Line Items]
Intangible assets			622.6
U.S. Concrete [Member] | Other Intangibles [Member]
Significant Acquisitions And Disposals [Line Items]
Intangible assets			$ 60.3

[1] See Note 16 for acquisitions.

[2] Includes $1,268.5 million paid to acquire all issued and outstanding shares of U.S. Concrete common stock and $384.4 million of U.S. Concrete obligations paid on the acquisition date, less $18.4 million of cash acquired