Restructuring (Narrative) (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 14,747,000	$ 14,747,000
Restructuring Charges, repositioning actions	13,800,000
Engineered Materials
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, repositioning actions	1,700,000
Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, repositioning actions	11,400,000
Prior Restructuring Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	900,000
Two Thousand Twelve Restructuring Actions [Member]
Restructuring Cost and Reserve [Line Items]
Reduction of workforce by employees		200
Reduction of global workforce		2.00%
Additional restructuring and related charges		5,000,000
Expected pre-tax cash payments		5,000,000
Additional pre-tax cash payments		10,000,000
Two Thousand Twelve Restructuring Actions [Member] | Engineered Materials
Restructuring Cost and Reserve [Line Items]
Additional restructuring and related charges		2,000,000
Two Thousand Twelve Restructuring Actions [Member] | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Additional restructuring and related charges		$ 3,000,000