Segment Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) segments	Sep. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segments			4
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 2,006,275	$ 1,707,763	$ 5,812,998	$ 5,016,381
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Interest Expense	35,453	33,789	108,794	100,886
Interest Income	(1,761)	(795)	(6,679)	(4,021)
Earnings before provision for income taxes	237,428	181,176	700,191	473,299
Provision for income taxes	58,516	51,092	184,974	125,569
Net earnings	178,912	130,084	515,217	347,730
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	645,832	570,562	1,908,897	1,739,989
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	98,348	97,240	379,566	295,022
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	562,818	412,822	1,641,272	1,217,722
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	87,164	66,178	213,361	166,258
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	438,788	451,328	1,221,926	1,243,966
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	65,413	64,111	164,804	165,502
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	359,298	273,248	1,042,554	815,486
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	51,936	13,279	146,995	24,448
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	(461)	(197)	(1,651)	(782)
Total segments [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	302,861	240,808	904,726	651,230
Corporate expense / other [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	$ 31,741	$ 26,638	$ 102,420	$ 81,066

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