Segment Results (Schedule Of Financial Information By Reportable Segment) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating profit (loss) from continuing operations
Net sales	$ 695.9	$ 694.2	$ 2,071.8	$ 2,066.5
Operating profit (loss)	105.4	103.8	311.0	291.9
Interest income	0.7	0.5	1.8	1.4
Interest expense	(9.3)	(9.2)	(27.3)	(27.5)
Miscellaneous - net	0.2	(0.1)	(0.8)	(0.6)
Income before income taxes	97.0	95.0	284.7	265.2
Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	266.9	245.1	770.3	759.1
Operating profit (loss)	32.6	30.7	91.3	91.5
Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	188.6	186.7	582.3	551.2
Operating profit (loss)	41.4	34.7	123.0	97.1
Engineered Materials
Operating profit (loss) from continuing operations
Net sales	68.4	64.2	212.7	197.0
Operating profit (loss)	12.2	11.4	39.5	38.6
Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	172.0	198.2	506.5	559.2
Operating profit (loss)	34.8	38.9	104.8	110.6
Corporate
Operating profit (loss) from continuing operations
Operating profit (loss)	(15.6)	(11.9)	(47.6)	(45.9)
Commercial Valves [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	85.7	75.2	230.2	224.1
Other Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	23.5	21.8	67.9	65.9
Outside [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	266.9	245.1	770.3	759.1
Outside [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	188.6	186.7	582.3	551.2
Outside [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	68.4	64.2	212.7	197.0
Outside [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	172.0	198.2	506.5	559.2
Payment Acceptance and Dispensing Products [Member] [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	136.7	123.7	431.1	373.7
Merchandising Equipment [Member] | Payment and Merchandising Technologies [Member]
Operating profit (loss) from continuing operations
Net sales	51.9	63.0	151.2	177.5
Commercial Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	90.1	88.4	259.9	270.6
Military and Other Original Equipment [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	37.4	63.3	116.3	152.9
Commercial Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	32.3	31.9	96.0	96.3
Military Aftermarket Products [Member] | Aerospace and Electronics [Member]
Operating profit (loss) from continuing operations
Net sales	12.2	14.6	34.3	39.4
FRP - Recreational Vehicles [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	37.2	32.6	116.9	99.8
FRP - Building Products [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	23.7	22.9	72.1	68.3
FRP - Transportation [Member] | Engineered Materials
Operating profit (loss) from continuing operations
Net sales	7.5	8.7	23.7	28.9
Process Valves and Related Products [Member] | Fluid Handling [Member]
Operating profit (loss) from continuing operations
Net sales	$ 157.7	$ 148.1	$ 472.2	$ 469.1