Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 261,434	$ 300,494
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	(660,461)	25,507
Production & Automation Technologies
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	205,479	222,959
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	(648,591)	13,064
Drilling Technologies
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	55,955	77,535
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	11,359	26,806
Total segment operating profit
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	(637,232)	39,870
Corporate expense and other
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	(14,190)	(3,836)
Interest expense, net
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Income (loss) before income taxes	$ (9,039)	$ (10,527)