Segments - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation From Segment Totals To Consolidated Abstract
Operating Earnings, Excluding Indirect Operating Expenses	$ 333,588	$ 251,704	$ 195,475
Combination-related expenses	(29,790)	(35,477)	(16,661)
Restructuring and related charges	(5,541)	(26,678)	0
Fair value step up of inventory sold	(226)	(11,714)	0
Indefinite-lived intangible asset impairment	(38,000)	0	0
Non-operating Charges	(143,202)	(104,572)	(83,515)
Depreciation of corporate assets and amortization	(57,469)	(27,129)	(7,518)
Operating income	59,360	46,134	87,781
Other expense, net	(5,618)	(254)	(642)
Interest expense, net	(26,603)	(16,976)	(4,041)
Income before taxes and equity in net income of associated companies	$ 27,139	$ 28,904	$ 83,098