Segment Information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($) segments	Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segments	4
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 1,813,372	$ 1,622,273
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Interest Expense	36,409	33,318
Interest Income	2,580	1,604
Earnings before provision for income taxes	231,972	127,624
Provision for income taxes	59,725	28,268
Net earnings	172,247	99,356
Energy Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	324,088	283,230
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	41,691	11,244
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	607,635	576,995
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	174,398	93,748
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	525,195	399,062
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	52,639	46,047
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	356,834	363,252
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	33,562	38,161
Intersegment Elimination [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	(380)	(266)
Total segments [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	302,290	189,200
Corporate expense / other [Member]
Reconciliation of Earnings from Continuing Operations from Segments to Consolidated [Abstract]
Earnings before provision for income taxes	$ 36,489	$ 29,862

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