SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Weighted-Average Common Shares Outstanding Assuming Dilution) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Weighted-average common shares outstanding	132,552	132,269	132,560	132,157
Dilutive effect of Stock-Only Stock Appreciation Rights	271	723	307	723
Dilutive effect of Other stock compensation plans	292	362	287	319
Weighted-average common shares outstanding, assuming dilution	133,115	133,354	133,154	133,199