SHAREHOLDERS'S EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' equity, Beginning balance	$ 1,755,243	$ 1,438,004	$ 1,438,004
Net income (loss)	41,343	147,735	373,798
Dividends ($1.86 per share for 2013 and $0.49 per share for 3 months ended 3/31/14)	(62,011)		(233,321)
Issuance of shares under incentive stock plans	2,027		10,101
Stock-based compensation	3,103		11,710
Excess tax benefit (deficiency) on stock-based compensation	(1,240)		8,413
Repurchase of common shares	(1,754)		(11,326)
Equity portion of convertible debt (Note 15)			2,453
Amortization of / net gain from pension and postretirement plans	2,097	4,969	61,869
Acquisition of noncontrolling interest			96,336
Noncontrolling interest redemption of shares	(679)		(713)
Foreign currency translation adjustment, Total	17,803	975	(5,710)
Joint venture cash flow hedges, Total	1,711	554	3,629
Total stockholders' equity, Ending balance	1,757,643		1,755,243	1,438,004
Dividends [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.49			$ 1.86
Warrants on Senior Exchangeable Notes due 2012 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Settlement of warrants (Note 15) (in shares)		2,037,303
Common Shares [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' equity, beginning balance (in shares)	126,257,870	123,332,444	123,332,444
Total stockholders' equity, Beginning balance	692,100	670,749	670,749
Issuance of shares under incentive stock plan (in shares)	235,843		1,001,426
Issuance of shares under incentive stock plans	2,027		10,101
Stock-based compensation	3,103		11,710
Excess tax benefit (deficiency) on stock-based compensation	(1,240)		8,413
Repurchase of common shares (in shares)	(42,208)		(211,221)
Repurchase of common shares	(1,754)		(11,326)
Equity portion of convertible debt (Note 15)			2,453
Stockholders' equity, ending balance (in shares)	126,451,505		126,257,870
Total stockholders' equity, Ending balance	694,236		692,100
Common Shares [Member] | Warrants on Senior Exchangeable Notes due 2012 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Settlement of warrants (Note 15) (in shares)			2,135,221
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' equity, Beginning balance	1,015,209	876,634	876,634
Net income (loss)	41,426		371,896
Dividends ($1.86 per share for 2013 and $0.49 per share for 3 months ended 3/31/14)	(62,011)		(233,321)
Total stockholders' equity, Ending balance	994,624		1,015,209
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' equity, Beginning balance	(46,139)	(109,379)	(109,379)
Amortization of / net gain from pension and postretirement plans	2,097		61,869
Foreign currency translation adjustment, Total	12,893		(1,915)
Joint venture cash flow hedges, Total	1,112		3,286
Total stockholders' equity, Ending balance	(30,037)		(46,139)
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders' equity, Beginning balance	94,073	0	0
Net income (loss)	(83)		1,902
Acquisition of noncontrolling interest			96,336
Noncontrolling interest redemption of shares	(679)		(713)
Foreign currency translation adjustment, Total	4,910		(3,795)
Joint venture cash flow hedges, Total	599		343
Total stockholders' equity, Ending balance	$ 98,820		$ 94,073