Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8,135	$ 1,843	$ 12,222	$ 7,850
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			31,272
Provision			12,222
Payments			(27,724)
Other, including write-offs of fixed assets			(1,374)
Severance and other restructuring reserve, ending balance	14,396		14,396
Engineered Systems Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,860	756	3,235	1,818
Fluids Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,497	1,068	5,548	4,507
Refrigeration and Food Equipment Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	234	19	146	1,525
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,544	0	3,293	0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			25,681
Provision			8,420
Payments			(21,848)
Other, including write-offs of fixed assets			1,743
Severance and other restructuring reserve, ending balance	10,510		10,510
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance			5,591
Provision			3,802
Payments			(5,876)
Other, including write-offs of fixed assets			(369)
Severance and other restructuring reserve, ending balance	3,886		3,886
Rightsizing Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6,808		9,857
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,192	157	4,399	4,235
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,943	$ 1,686	$ 7,823	$ 3,615