CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income including noncontrolling interest	$ (324,400)	$ 123,242	$ (833,102)	$ 196,011
Other comprehensive (loss) income, net of tax
Net (loss) gain from foreign currency translation	50,568	28,606	(67,843)	54,055
Retirement and postretirement benefit plans	(39,234)	2,762	(48,945)	5,516
Deferred loss on interest rate hedges reclassified to interest expense	309	586	608	1,171
Other comprehensive (loss) income	11,643	31,954	(116,180)	60,742
COMPREHENSIVE (LOSS) INCOME	$ (312,757)	$ 155,196	$ (949,282)	$ 256,753