INCOME TAXES (Sources and Tax Effects of Differences Between Benefit from Income Taxes and Amount Computed by Applying Federal Statutory Income Tax Rate to Losses from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
INCOME TAXES [Abstract]
Income tax expense at the federal statutory tax rate	$ 183.5	$ 156.2	$ 159.1
Statutory depletion	(28.3)	(24.7)	(23.0)
State and local income taxes, net of federal income tax benefit	34.7	27.4	26.1
Share-based compensation	(6.1)	(6.9)	(17.2)
Uncertain tax positions	2.5	1.4	1.8
AL NOL valuation allowance	13.7	0.0	0.0
Research and development credit	(2.7)	(2.7)	(9.5)
Other, net	2.8	5.1	(2.1)
Total income tax expense	$ 200.1	$ 155.8	$ 135.2
Income tax expense at the federal statutory tax rate	21.00%	21.00%	21.00%
Statutory depletion, Rate	(3.20%)	(3.30%)	(3.00%)
State and local income taxes, net of federal income tax benefit, Rate	4.00%	3.70%	3.40%
Share-based compensation, Rate	(0.70%)	(0.90%)	(2.30%)
Uncertain tax positions, Rate	0.30%	0.20%	0.20%
AL NOL valuation allowance, Rate	1.60%	0.00%	0.00%
Research and development credit, Rate	(0.30%)	(0.40%)	(1.30%)
Other, net, Rate	0.20%	0.60%	(0.20%)
Effective tax rate	22.90%	20.90%	17.80%