EQUITY (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 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	44,832	64,252	178,545	203,622
Other comprehensive (loss) income	(46,328)	23,471	(42,073)	(965)
Total comprehensive income (loss)	(1,496)	87,723	136,472	202,657
Cash dividends declared - $0.69 per share and $0.60 per share for the nine months ended September 30, 2014 and 2013, respectively			(54,646)	(49,353)
Cash dividends declared per share (in dollars per share)	$ 0.23	$ 0.2	$ 0.69	$ 0.60
Issuance of shares under benefit plans			15,634	30,835
Purchase of shares for treasury			(249,403)	(113,641)
Transactions with Noncontrolling Interests			(2,266)
Balance at the end of the period	1,376,479	1,428,819	1,376,479	1,428,819
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			179,474	205,456
Other comprehensive (loss) income			(42,838)	(1,030)
Total comprehensive income (loss)			136,636	204,426
Cash dividends declared - $0.69 per share and $0.60 per share for the nine months ended September 30, 2014 and 2013, respectively			(54,646)	(49,353)
Issuance of shares under benefit plans			15,634	30,835
Purchase of shares for treasury			(249,403)	(113,641)
Transactions with Noncontrolling Interests			(1,484)
Balance at the end of the period	1,373,339	1,414,640	1,373,339	1,414,640
Noncontrolling Interests
Changes in equity
Balance at the beginning of the period			4,086	15,948
Comprehensive income:
Net income including non-controlling interests			(929)	(1,834)
Other comprehensive (loss) income			765	65
Total comprehensive income (loss)			(164)	(1,769)
Cash dividends declared - $0.69 per share and $0.60 per share for the nine months ended September 30, 2014 and 2013, respectively			0	0
Issuance of shares under benefit plans			0	0
Purchase of shares for treasury			0	0
Transactions with Noncontrolling Interests			(782)
Balance at the end of the period	$ 3,140	$ 14,179	$ 3,140	$ 14,179