EQUITY (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Changes in equity
Balance at the beginning of the period	$ 1,530,688	$ 1,358,321
Comprehensive income:
Net income including non-controlling interests	56,424	66,843
Other comprehensive (loss) income	(10,235)	(8,532)
Total comprehensive income (loss)	46,189	58,311
Cash dividends declared - $0.23 per share and $0.20 per share for the three months ended March 31, 2014 and 2013, respectively	(18,501)	(16,590)
Cash dividends declared per share (in dollars per share)	$ 0.23	$ 0.2
Issuance of shares under benefit plans	7,024	16,283
Purchase of shares for treasury	(51,021)	(12,780)
Transactions with Noncontrolling Interest Holders	(2,266)
Balance at the end of the period	1,512,113	1,403,545
Shareholders' Equity
Changes in equity
Balance at the beginning of the period	1,526,602	1,342,373
Comprehensive income:
Net income including non-controlling interests	56,453	66,806
Other comprehensive (loss) income	(10,916)	(8,645)
Total comprehensive income (loss)	45,537	58,161
Cash dividends declared - $0.23 per share and $0.20 per share for the three months ended March 31, 2014 and 2013, respectively	(18,501)	(16,590)
Issuance of shares under benefit plans	7,024	16,283
Purchase of shares for treasury	(51,021)	(12,780)
Transactions with Noncontrolling Interest Holders	(1,484)
Balance at the end of the period	1,508,157	1,387,447
Noncontrolling Interests
Changes in equity
Balance at the beginning of the period	4,086	15,948
Comprehensive income:
Net income including non-controlling interests	(29)	37
Other comprehensive (loss) income	681	113
Total comprehensive income (loss)	652	150
Cash dividends declared - $0.23 per share and $0.20 per share for the three months ended March 31, 2014 and 2013, respectively	0	0
Issuance of shares under benefit plans	0	0
Purchase of shares for treasury	0	0
Transactions with Noncontrolling Interest Holders	(782)
Balance at the end of the period	$ 3,956	$ 16,098