RETIREMENT ANNUITY AND GUARANTEED CONTINUOUS EMPLOYMENT PLANS (Obligations and Funded Status) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	$ (6,407)	$ (136,331)	$ (142,738)	$ (1,773)	$ (423)
Change in benefit obligations
Benefit obligations at beginning of year			1,045,471	941,442
Service cost			19,933	19,062	23,188
Interest cost			36,002	42,485	37,225
Plan participants' contributions			185	215
Plan amendments			0	45
Acquisitions			6,170	0
Actuarial (gain) loss			(42,640)	117,881
Benefits Paid			(32,217)	(60,582)
Settlement/curtailment			(463,943)	(7,172)
Currency translation			(10,792)	(7,905)
Benefit obligations at end of year	558,169		558,169	1,045,471	941,442
Change in plan assets
Balance at the beginning of year			1,010,937	939,995
Actual return on plan assets			9,298	108,060
Employer contributions			50,468	27,550
Plan participants' contributions			185	215
Acquisitions			5,995	0
Benefits paid			(30,358)	(59,196)
Settlement			(462,601)	0
Currency translation			(7,823)	(5,687)
Balance at the end of year	576,101		576,101	1,010,937	$ 939,995
Net amount recognized
Funded status at end of year	17,932		17,932	(34,534)
Unrecognized actuarial net loss	156,019		156,019	316,296
Unrecognized prior service cost	(1,304)		(1,304)	(1,930)
Unrecognized transition assets, net	41		41	45
Net amount recognized in the balance sheets	$ 172,688		$ 172,688	$ 279,877