EQUITY (Changes in Total Equity) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
EQUITY [Abstract]
Balance at beginning of year	$ 6,928.6	$ 6,545.0
Net earnings attributable to Vulcan	120.7	91.8
Share-based compensation plans, net of shares withheld for taxes	(15.1)	(16.9)
Share-based compensation expense	8.2	7.5
Cash dividends on common stock ($0.43/$0.40 per share, respectively)	(57.2)	(53.2)
Other comprehensive income	1.7	1.1
Balance at end of period	6,986.9	6,575.3
Noncontrolling Interest, Balance at beginning of year	23.6	22.7
Earnings attributable to noncontrolling interest	0.2	0.3
Noncontrolling Interest, Balance at end of period	23.8	23.0
Balance at end of period	$ 7,010.7	$ 6,598.3	$ 6,952.2
Cash dividend on common stock, per share	$ 0.43	$ 0.40