OTHER COMPREHENSIVE INCOME (Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (41,696)	$ (33,954)	$ (74,814)	$ (64,727)
Other nonoperating expense	8,223	7,367	14,136	(1,969)
Benefit from income taxes	57,283	61,352	117,922	73,546
Total	195,344	209,916	355,958	270,174
Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	1,595	1,889	3,186	4,378
Amortization of Interest Rate Hedges Losses [Member] | Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	487	263	969	1,337
Benefit from income taxes	(127)	(69)	(253)	(349)
Total	360	194	716	988
Amortization of Pension and Postretirement Plan Actuarial Loss and Prior Service Cost [Member] | Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other nonoperating expense	1,671	2,294	3,343	4,587
Benefit from income taxes	(436)	(599)	(873)	(1,197)
Total	$ 1,235	$ 1,695	$ 2,470	$ 3,390