DEBT (Narrative) (Details) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
		Sep. 30, 2021	Aug. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Aug. 31, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Discounts and debt issuance costs				$ 6.1	$ 13.9
Total long-term debt - face value				3,941.9	3,949.6
Financing costs				66.2	69.6
Commercial Paper							$ 1,600.0
Repayment of long-term debt				557.7	1,451.7	$ 250.0
Short-term debt				$ 100.0	0.0
Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity								$ 1,600.0
Proceeds from line of credit			$ 1,600.0
Delayed Draw Term Loan Due 2026 [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.00%
Delayed Draw Term Loan Due 2026 [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.875%
Supported By Line Of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit				$ 78.6
Bridge Facility And Delayed Draw Term Loan [Member]
Debt Instrument [Line Items]
Discounts and debt issuance costs					9.4
Financing costs					13.3
Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 1,600.0
Commitment fee				0.10%
Available borrowing capacity				$ 1,421.4
Borrowings				$ 100.0
Line of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.125%
Line of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				1.125%
Line of Credit [Member] | Unsecured Line Of Credit, Maturity Of September 2026 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity							1,000.0
Line of Credit [Member] | Unsecured Line Of Credit, Maturity Of August 2027 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 1,600.0
Bridge Facility [Member]
Debt Instrument [Line Items]
Face value								$ 2,200.0
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Outstanding standby letters of credit				$ 78.6
Period of standby letters of credit				1 year
Standby Letters of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.175%
Maximum [Member] | Delayed Draw Term Loan Due 2026 [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.25%
Maximum [Member] | Delayed Draw Term Loan Due 2026 [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				1.25%
Maximum [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Commitment fee				0.225%
Maximum [Member] | Line of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.625%
Maximum [Member] | Line of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				1.625%
Minimum [Member] | Delayed Draw Term Loan Due 2026 [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.00%
Minimum [Member] | Delayed Draw Term Loan Due 2026 [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.075%
Minimum [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Commitment fee				0.09%
Minimum [Member] | Line of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				0.00%
Minimum [Member] | Line of Credit [Member] | SOFR [Member]
Debt Instrument [Line Items]
Applicable margin on borrowing rate				1.00%
Term Loan Due [Member] | Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 1,100.0		$ 550.0	$ 1,100.0		$ 550.0
Maturity year				2026	2026
Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value				$ 3,941.9
Notes [Member] | Delayed Draw Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value				550.0
Commercial Paper [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[1]			$ 550.0	$ 0.0
Maturity year	[1]			2027
U.S. Concrete [Member] | Senior Notes Due 2029 [Member]
Debt Instrument [Line Items]
Repayments of debt		$ 434.5
Debt assumed in acquisition			$ 434.5

[1] Borrowings on the bank line of credit and commercial paper are classified as short-term if we intend to repay within twelve months and as long-term if we have the intent and ability to extend payment beyond twelve months.