Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (208,483)	$ (2,659)
Other comprehensive (loss) income, net of tax:
Foreign currency translation, net of tax of $(2,817) and $924, respectively	(27,735)	21,368
Net unrealized (loss) gain on cash flow hedges, net of tax of $(58) and $56, respectively	(174)	163
Net unrealized gain on investment securities, net of tax of $434 and $964, respectively	1,308	2,816
Amortization of pension and postretirement costs, net of tax benefits of $2,650 and $2,649, respectively	8,870	6,636
Other comprehensive (loss) income, net of tax	(17,731)	30,983
Comprehensive (loss) income	$ (226,214)	$ 28,324