Segment Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segments	Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segments			4
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 1,993,351	$ 1,686,345	$ 3,806,723	$ 3,308,618
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Interest Expense	36,932	33,779	73,341	67,097
Interest Income	(2,338)	(1,622)	(4,918)	(3,226)
Earnings before provision for income taxes	230,791	164,499	462,763	292,123
Provision for income taxes	66,733	46,209	126,458	74,477
Net earnings	164,058	118,290	336,305	217,646
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	655,430	592,432	1,263,065	1,169,427
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	106,820	104,034	281,218	197,782
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	553,259	405,838	1,078,454	804,900
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	73,558	54,033	126,197	100,080
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	426,304	429,386	783,138	792,638
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	65,829	63,230	99,391	101,391
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	359,168	259,008	683,256	542,238
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	53,368	(75)	95,059	11,169
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	(810)	(319)	(1,190)	(585)
Total segments [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	299,575	221,222	601,865	410,422
Corporate expense / other [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	$ 34,190	$ 24,566	$ 70,679	$ 54,428

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