CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings (Loss) [Member]
Balance at Dec. 31, 2017	$ 4,383,180	$ 256,992	$ 942,485	$ (5,077,039)	$ 8,455,501	$ (194,759)
Net earnings	271,393	0	0	0	271,393	0
Dividends paid	(142,322)	0	0	0	(142,322)	0
Separation of Apergy	(906,815)	0	0	0	(939,743)	32,928
Common stock issued for the exercise of share-based awards	(21,202)	402	(21,604)	0	0	0
Share-based compensation expense	11,147	0	11,147	0	0	0
Common stock acquired	(744,977)	0	(140,000)	(604,977)	0	0
Other comprehensive earnings, net of tax	(5,092)	0	0	0	0	(5,092)
Other, net	(4,896)	0	(4,896)	0	0	0
Balance at Jun. 30, 2018	2,840,591	257,394	787,132	(5,682,016)	7,657,860	(179,779)
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2018-02 [Member]	0	0	0	0	12,856	(12,856)
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09 [Member]	$ 175	$ 0	$ 0	$ 0	$ 175	$ 0