Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segments	Jun. 30, 2018 USD ($)
Segment Reporting [Abstract]
Fluids Segment Earnings Excluding Loss on Finder			$ 228,082
Segment Reporting Information [Line Items]
Spin-off Costs Incurred to Date		$ 34,638		$ 46,384
Number of reportable segments | segments			3
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	$ 1,810,706	1,798,094	$ 3,535,463	3,435,765
Interest Expense	31,754	32,125	63,562	67,765
Interest Income	(945)	(2,563)	(1,835)	(4,620)
Earnings before provision for income taxes	249,739	211,437	388,057	345,687
Provision for income taxes	(51,654)	(44,981)	(84,267)	(69,822)
Earnings from continuing operations	198,085	166,456	303,790	275,865
Engineered Systems Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	696,501	702,989	1,383,692	1,374,615
Earnings before provision for income taxes	131,770	126,649	254,844	228,715
Fluids Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	729,433	693,666	1,432,657	1,321,764
Earnings before provision for income taxes	128,915	93,028	181,136	160,376
Refrigeration and Food Equipment Segment [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	385,474	401,766	720,117	740,001
Earnings before provision for income taxes	44,375	51,372	69,182	80,554
Intersegment Eliminations [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenue	(702)	(327)	(1,003)	(615)
Total segments [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Earnings before provision for income taxes	305,060	271,049	505,162	469,645
Corporate expense / other [Member]
Reconciliation from Segment Totals to Consolidated [Abstract]
Earnings before provision for income taxes	$ 24,512	$ 30,050	$ 55,378	$ 60,813