SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Weighted-Average Common Shares Outstanding Assuming Dilution) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Weighted-average common shares outstanding	132,573	132,414	132,564	132,244
Dilutive effect of Stock-Only Stock Appreciation Rights	314	525	307	662
Dilutive effect of Other stock compensation plans	381	436	321	367
Weighted-average common shares outstanding, assuming dilution	133,268	133,375	133,192	133,273