CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017		Dec. 31, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss) including noncontrolling interest	$ 419,486	$ (311,789)	[1]	$ (275,970)	[1]
Other comprehensive income (loss), net of tax
Net gain (loss) from foreign currency translation	(145,022)	171,725		66,449
Retirement and postretirement benefit plans	29,110	(7,682)		7,955
Deferred loss on interest rate hedges reclassified to interest expense	2,342	1,926		1,926
Reclassification of certain tax effects to retained earnings	(30,237)
Other	(3,737)
Other comprehensive income (loss)	(147,544)	165,969		76,330
COMPREHENSIVE INCOME (LOSS)	$ 271,942	$ (145,820)		$ (199,640)

[1] Reclassified to conform to current presentation (see Note B).