Quarterly Results For The Year (Details) - USD ($)			3 Months Ended								12 Months Ended
		Aug. 08, 2014	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Combination, Integration Related Costs											$ 0	$ 7,200,000	$ 9,800,000
Net sales			$ 681,600,000	$ 694,200,000	$ 712,200,000	$ 660,000,000	$ 680,600,000	$ 669,900,000	$ 711,200,000	$ 678,800,000	2,748,000,000	2,740,500,000	2,925,000,000
Cost of sales			433,900,000	449,200,000	449,100,000	426,100,000	441,700,000	431,700,000	470,700,000	442,000,000	1,758,300,000	1,786,100,000	1,908,700,000
Gross profit			247,700,000	245,000,000	263,100,000	233,900,000	238,900,000	238,200,000	240,500,000	236,800,000	989,700,000	954,400,000
Operating profit from continuing operations			(91,600,000)	103,800,000	102,600,000	85,500,000	103,500,000	93,200,000	90,200,000	86,000,000	200,300,000	372,900,000	316,300,000
Income from continuing operations attributable to common shareholders							65,100,000	56,900,000	55,800,000	$ 51,100,000		228,900,000
Net income attributable to common shareholders			(63,900,000)	$ 63,500,000	$ 68,200,000	$ 55,000,000					122,800,000	228,900,000	192,700,000	$ 192,700,000
Earnings per diluted share
Restructuring charges											0	7,800,000	29,200,000
Asbestos provision			$ 0								192,400,000	0		0
Environmental provision											$ 0	$ 0	$ 55,800,000	$ 55,800,000
Gains (Losses) on Sales of Other Real Estate							$ 3,500,000	$ 700,000	$ 1,100,000
Earnings Per Share, Basic			$ (1.11)	$ 1.09	$ 1.17	$ 0.95	$ 1.12	$ 0.98	$ 0.96	$ 0.88	$ 2.10	$ 3.94	$ 3.28
Earnings Per Share, Diluted			$ (1.08)	$ 1.07	$ 1.15	$ 0.93	$ 1.10	$ 0.97	$ 0.95	$ 0.87	$ 2.07	$ 3.89	$ 3.23
Acquisition Related Restructuring [Member]
Earnings per diluted share
Restructuring charges													$ 10,300,000
2014 Repositioning Actions [Member]
Earnings per diluted share
Restructuring charges													18,900,000
Huttig [Domain]
Litigation Settlement, Amount					$ 5,000,000
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]										$ (61,200,000)	$ (47,500,000)	(53,600,000)
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											5,000,000		$ 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] $6.5 million for legal settlements in 2016 and 2014, respectively