Segment Results (Schedule Of Financial Information By Reportable Segment) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating profit (loss) from continuing operations
Net sales	$ 702.5	$ 712.2	$ 1,375.9	$ 1,372.2
Operating profit (loss)	109.0	102.6	205.6	188.1
Interest income	0.6	0.5	1.1	1.0
Interest expense	(9.0)	(9.2)	(18.0)	(18.3)
Miscellaneous - net	(0.9)	(0.3)	(1.0)	(0.6)
Income before income taxes	99.7	93.6	187.7	170.2
Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	263.8	265.9	503.4	513.9
Operating profit (loss)	31.6	35.4	58.7	60.8
Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	198.2	192.6	393.7	364.5
Operating profit (loss)	42.5	34.5	81.6	62.5
Engineered Materials
Operating profit (loss) from continuing operations
Net sales	69.4	64.5	144.3	132.8
Operating profit (loss)	13.3	13.5	27.3	27.2
Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	171.1	189.2	334.5	361.0
Operating profit (loss)	38.0	38.6	70.0	71.7
Corporate
Operating profit (loss) from continuing operations
Operating profit (loss)	(16.4)	(19.4)	(32.0)	(34.1)
Commercial Valves [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	75.0	76.5	144.5	148.9
Other Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	23.0	23.5	44.4	44.0
Outside [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	263.8	265.9	503.4	513.9
Outside [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	198.2	192.6	393.7	364.5
Outside [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	69.4	64.5	144.3	132.8
Outside [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	171.1	189.2	334.5	361.0
Payment Acceptance and Dispensing Products [Member] [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	148.6	132.4	294.5	249.9
Merchandising Equipment [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	49.6	60.2	99.2	114.6
Commercial Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	87.3	92.1	169.8	182.1
Military and Other Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	40.9	49.0	78.9	89.6
Commercial Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	31.6	34.0	63.7	64.4
Military Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	11.3	14.1	22.1	24.8
FRP - Recreational Vehicles [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	38.1	32.1	79.7	67.2
FRP - Building Products [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	23.9	22.9	48.4	45.4
FRP - Transportation [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	7.4	9.5	16.2	20.2
Process Valves and Related Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	$ 165.8	$ 165.9	$ 314.5	$ 321.0