Quarterly Results For The Year (Details) - USD ($)			3 Months Ended								12 Months Ended
		Aug. 08, 2014	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventory and Backlog Amortization												$ 4,800,000
Business Combination, Integration Related Costs											$ 7,200,000	9,800,000	$ 0
Net sales			$ 680,600,000	$ 669,900,000	$ 711,200,000	$ 678,800,000	$ 730,700,000	$ 727,400,000	$ 750,100,000	$ 716,800,000	2,740,500,000	2,925,000,000	2,595,300,000
Cost of sales			441,700,000	431,700,000	470,700,000	442,000,000	481,700,000	476,300,000	488,000,000	462,700,000	1,786,100,000	1,908,700,000	1,711,800,000
Gross profit			238,900,000	238,200,000	240,500,000	236,800,000	249,000,000	251,100,000	262,100,000	254,100,000	954,400,000	1,016,300,000
Operating profit from continuing operations			103,500,000	93,200,000	90,200,000	86,000,000	89,600,000	47,700,000	97,600,000	81,400,000	372,900,000	316,300,000	347,900,000
Income from continuing operations attributable to common shareholders							56,200,000	28,100,000	59,700,000	$ 48,700,000		192,700,000
Net income attributable to common shareholders			$ 65,100,000	$ 56,900,000	$ 55,800,000	$ 51,100,000					228,900,000	192,700,000	219,500,000
Earnings per diluted share
Restructuring charges											7,800,000	29,200,000	0
Acquisition costs associated with the potential acquisition of MEI													22,800,000
Asbestos provision											0	0	0
Environmental provision											0	$ 55,800,000	$ 0
Gains (Losses) on Sales of Other Real Estate							$ 3,500,000	$ 700,000	$ 1,100,000		$ 1,000,000
Earnings Per Share, Basic			$ 1.12	$ 0.98	$ 0.96	$ 0.88	$ 0.96	$ 0.48	$ 1.01	$ 0.83	$ 3.94	$ 3.28	$ 3.79
Earnings Per Share, Diluted			$ 1.10	$ 0.97	$ 0.95	$ 0.87	$ 0.95	$ 0.47	$ 1.00	$ 0.82	$ 3.89	$ 3.23	$ 3.73
Acquisition Related Restructuring [Member]
Earnings per diluted share
Restructuring charges											$ (600,000)	$ 10,300,000
2014 Repositioning Actions [Member]
Earnings per diluted share
Restructuring charges											(200,000)	18,900,000
Environmental Claims For Site In Roseland New Jersey [Member]
Earnings per diluted share
Loss Contingency, Damages Paid, Value		$ 6,500,000							$ 6,500,000
Corporate Before Environmental Charges [Member]
Operating profit from continuing operations	[1]										(47,500,000)	$ (53,600,000)	$ (76,100,000)
Environmental Claims For Site In Goodyear Arizona [Member] | Environmental Claims For Site In Roseland NJ [Member]
Earnings per diluted share
Loss Contingency, Damages Paid, Value											6,500,000
Environmental provision								$ 49,000,000			49,000,000
Environmental Claims For Site In Roseland New Jersey [Member] | Environmental Claims For Site In Roseland NJ [Member]
Earnings per diluted share
Environmental provision								$ 6,800,000			$ 6,800,000

[1] Includes $6.5 million for a settlement lawsuit recorded in 2014