Special Charges (Special Charges, Net) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net	$ 16,910	$ 5,186	$ 5,848	$ 2,559
Brazil closure				879
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		7,345
Defined Benefit Plan, Plan Assets, Payment for Settlement			2,400
Other Nonrecurring (Income) Expense		17,686	13,061	7,330
Distributed Valves and Engineered Valves Business [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		4,390	986	(659)
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries		(1,423)	1,044	528
Brazil closure			921
Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		5,951
Divestiture [Member] | Rosscor [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net			1,888
Contingent Consideration Revaluation [Member]
Restructuring Cost and Reserve [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			(12,200)
Energy Segment
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		(1,181)	3,661	54
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		(12,200)
Defined Benefit Plan, Plan Assets, Payment for Settlement			0
Other Nonrecurring (Income) Expense		(3,348)	1,907	(11,596)
Energy Segment | Distributed Valves and Engineered Valves Business [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		2,520	1,974	(329)
Energy Segment | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net			10,166
Energy Segment | Acquisitions [Member] | Acquisition-related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				54
Energy Segment | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries		(1,785)	854	85
Energy Segment | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		(5,868)
Aerospace & Defense [Member]
Restructuring Cost and Reserve [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement			2,400
Other Nonrecurring (Income) Expense				6,160
Aerospace & Defense [Member] | Divestiture [Member] | Acquisition-related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				3,760
Industrial Segment
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		5,772	1,561
Industrial Segment | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries		327
Aerospace and Defense Segment [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		0	0
Aerospace and Defense Segment [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Brazil closure			0
Aerospace and Defense Segment [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		0
Advanced Flow Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		595	626	2,505
Advanced Flow Solutions [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Divestiture recoveries		35	190	443
Industrial Segment [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		10,016	0
Industrial Segment [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		78
Industrial Segment [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Brazil closure			0
Industrial Segment [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		9,938
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net				13,096
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		7,345
Other Nonrecurring (Income) Expense		11,018	9,266	12,766
Corporate [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Other Nonrecurring (Income) Expense		1,792	988	$ (330)
Corporate [Member] | Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net			8,278
Corporate [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Brazil closure			$ 0
Corporate [Member] | Divestiture [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges, net		$ 1,881