CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income (loss)	$ 93,944	$ (65,893)	[1]	$ 307,715	$ (25,000)	[1]
Other comprehensive income (loss), net of tax
Net (loss) gain from foreign currency translation	33,380	101,210		(53,805)	194,094
Retirement and postretirement benefit plans	3,390	2,396		10,498	7,169
Deferred loss on interest rate hedges reclassified to interest expense	585	482		1,756	1,445
Reclassification of certain tax effects to retained earnings				(30,237)
Other				(3,737)
Other comprehensive (loss) income	37,355	104,088		(75,525)	202,708
COMPREHENSIVE INCOME	$ 131,299	$ 38,195		$ 232,190	$ 177,708

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