Segment Results (Schedule Of Financial Information By Reportable Segment) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating profit (loss) from continuing operations
Net sales	$ 799.1	$ 673.4
Operating profit (loss)	94.3	93.3
Interest income	0.8	0.5
Interest expense	(14.6)	(9.0)
Miscellaneous - net	3.9	3.1
Income before income taxes	84.4	87.9
Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	266.6	239.6
Operating profit (loss)	28.1	24.4
Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	292.4	195.5
Operating profit (loss)	36.5	38.4
Engineered Materials
Operating profit (loss) from continuing operations
Net sales	69.7	74.9
Operating profit (loss)	12.4	14.0
Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	170.4	163.4
Operating profit (loss)	34.2	31.7
Corporate
Operating profit (loss) from continuing operations
Operating profit (loss)	(16.9)	(15.2)
Commercial Valves [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	80.5	69.5
Other Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	21.1	21.5
Outside [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	266.6	239.6
Outside [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	292.4	195.5
Outside [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	69.7	74.9
Outside [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	170.4	163.4
Payment Acceptance and Dispensing Products [Member] [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	145.4	145.9
Merchandising Equipment [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	47.2	49.6
Commercial Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	84.7	82.5
Military and Other Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	42.1	38.0
Commercial Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	32.6	32.1
Military Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	11.0	10.8
FRP - Recreational Vehicles [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	37.4	41.6
FRP - Building Products [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	23.8	24.5
FRP - Transportation [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	8.5	8.8
Process Valves and Related Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	$ 165.0	$ 148.6