SEGMENT INFORMATION (Reconciliation) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating income	$ 282,373us-gaap_OperatingIncomeLoss	$ 237,123us-gaap_OperatingIncomeLoss	$ 181,394us-gaap_OperatingIncomeLoss
Interest expense	(35,794)us-gaap_InterestExpense	(37,053)us-gaap_InterestExpense	(26,301)us-gaap_InterestExpense
Other income, net	365us-gaap_OtherNonoperatingIncomeExpense	980us-gaap_OtherNonoperatingIncomeExpense	128us-gaap_OtherNonoperatingIncomeExpense
Earnings before income taxes	246,944	201,050	155,221
Assets
Total assets	3,399,511us-gaap_Assets	3,458,274us-gaap_Assets	3,114,588us-gaap_Assets
Non Segment Cash [Member]
Assets
Total assets	245,651	12,651	6,934
Non Segment Other Assets [Member]
Assets
Total assets	38,900	44,382	31,477
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Operating income	(30,312)	(41,944)	(31,110)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	312,685	279,067	212,504
Assets
Total assets	$ 3,114,960	$ 3,401,241	$ 3,076,177

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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