EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2018		Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017		Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Non-controlling interests		$ 711				$ 711					$ 816
Stockholders' Equity Attributable to Parent		$ 927,157				$ 927,157					931,637
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		55,000,000				55,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		7,110,169				7,110,169
Changes in equity
Balance at the beginning of the period						$ 932,453
Comprehensive income:
Net income including non-controlling interests		$ 70,535		$ 106,111		200,214		$ 223,290
Other comprehensive income (loss)		4,804		22,205		(24,520)		78,767
Total comprehensive income (loss)		$ 75,339		$ 128,316		175,694		$ 302,057
Cash dividends declared - $1.17 per share						$ (76,833)
Cash dividends declared per share (in dollars per share)		$ 0.39		$ 0.35		$ 1.17		$ 1.05
Issuance of shares under benefit plans						$ 18,031
Purchase of shares for treasury (1)	[1]					(121,477)
Balance at the end of the period		$ 927,868				927,868
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(271,614)		$ (250,349)		(271,614)		$ (250,349)		$ (276,479)	(247,186)	$ (272,523)	$ (329,037)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		812		17,086		(30,343)		71,194
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		4,053		5,088		5,915		7,494
Net Current-Period Other Comprehensive Income (Loss), Net of Tax		4,865		22,174		(24,428)		78,688
Net sales (Note 2)		737,099		669,491		2,284,847		1,877,246
Cost of goods sold		485,547		451,610		1,506,625		1,240,391
Income Tax Expense (Benefit)		(25,209)		(24,531)		(73,991)		(69,218)
Shareholders' Equity
Comprehensive income:
Net income including non-controlling interests						200,227
Other comprehensive income (loss)						(24,428)
Total comprehensive income (loss)						175,799
Cash dividends declared - $1.17 per share						(76,833)
Issuance of shares under benefit plans						18,031
Purchase of shares for treasury (1)	[1]					(121,477)
Noncontrolling Interests
Comprehensive income:
Net income including non-controlling interests						(13)
Other comprehensive income (loss)						(92)
Total comprehensive income (loss)						(105)
Cash dividends declared - $1.17 per share						0
Issuance of shares under benefit plans						0
Purchase of shares for treasury (1)	[1]					0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax		1,914		1,150		1,914		1,150		498	875	1,834	587
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		1,218		(1,814)		987		(1,547)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		198	[2]	1,130	[2]	52	[3]	2,110	[3]
Net Current-Period Other Comprehensive Income (Loss), Net of Tax		1,416		(684)		1,039		563
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income | Sales
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net sales (Note 2)		(124)		968		(12)		1,580
Income Tax Expense (Benefit)		19		(398)		25		(602)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income | Cost of goods sold
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cost of goods sold		74		162		40		530
Income Tax Expense (Benefit)		(5)		25		(24)		214
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(79,414)		(90,555)		(79,414)		(90,555)		(83,269)	(85,277)	(94,513)	(95,939)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		0		0		0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		3,855	[4]	3,958	[4]	5,863	[5]	5,384	[5]
Net Current-Period Other Comprehensive Income (Loss), Net of Tax		3,855		3,958		5,863		5,384
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Income Tax Expense (Benefit)		(1,278)		(2,170)		(1,927)		(2,532)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax		(194,114)		(160,944)		(194,114)		(160,944)		$ (193,708)	$ (162,784)	$ (179,844)	$ (233,685)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(406)	[6]	18,900	[6]	(31,330)	[7]	72,741	[7]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0		0		0		0
Net Current-Period Other Comprehensive Income (Loss), Net of Tax		(406)		18,900		(31,330)		72,741
Accumulated Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive (Income) Loss, Net of Tax, Portion Attributable to Noncontrolling Interest		$ (61)		$ 31		$ (92)		$ 79

[1] The Company's total common shares authorized to be repurchased under the current repurchase program is 55 million shares. As of September 30, 2018, there remained 7.1 million common shares available for repurchase under this program. The repurchased common shares remain in treasury and have not been retired.

[2] During the 2018 period, this AOCI reclassification is a component of Net sales of $(124) (net of tax of $(19)) and Cost of goods sold of $74 (net of tax of $(5)); during the 2017 period, the reclassification is a component of Net sales of $968 (net of tax of $398) and Cost of goods sold of $162 (net of tax of $25). See Note 15 to the consolidated financial statements for additional details.

[3] During the 2018 period, the AOCI reclassification is a component of Net sales of $(12) (net of tax of $(25)) and Cost of goods sold of $40 (net of tax of $(24)); during the 2017 period, the AOCI reclassification is a component of Net sales of $1,580 (net of tax of $602) and Cost of goods sold of $530 (net of tax of $214). See Note 15 to the consolidated financial statements for additional details.

[4] This AOCI component is included in the computation of net periodic pension costs (net of tax of $1,278 and $2,170 during the three months ended September 30, 2018 and 2017, respectively). See Note 12 to the consolidated financial statements for additional details.

[5] The AOCI component is included in the computation of net periodic pension costs (net of tax of $1,927 and $2,532 during the nine months ended September 30, 2018 and 2017, respectively). See Note 12 to the consolidated financial statements for additional details.

[6] The Other comprehensive income (loss) before reclassifications excludes $(61) and $31 attributable to Non-controlling interests in the three months ended September 30, 2018 and 2017, respectively.

[7] The Other comprehensive income (loss) before reclassifications excludes $(92) and $79 attributable to Non-controlling interests in the nine months ended September 30, 2018 and 2017, respectively.