SEGMENT INFORMATION (Reconciliation) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Operating income	$ 339,743	$ 308,098	$ 310,617
Interest expense	(41,471)	(41,248)	(36,038)
Other income, net	1,347	1,111	615
Earnings before income taxes	299,619	267,961	275,194
Assets
Total assets	3,236,321	3,037,781	2,989,611
Non Segment Cash [Member]
Assets
Total assets	204,664	357,021	42,164
Non Segment Other Assets [Member]
Assets
Total assets	60,031	21,540	37,170
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Operating income	(23,200)	(23,215)	(34,790)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	362,943	331,313	345,407
Assets
Total assets	2,971,626	2,659,220	2,910,277
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	339,743	308,098	310,617
Assets
Total assets	3,236,321	3,037,781	2,989,611
Operating Segments [Member] | Corporate And Other [Member]
Segment Reporting Information [Line Items]
Operating income	(23,200)	(23,215)	(34,790)
Assets
Total assets	$ 264,695	$ 378,561	$ 79,334