Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 334.9	$ 335.9	$ 936.6	$ 934.0
Cost of goods sold	225.2	224.8	651.1	642.3
Gross profit	109.7	111.1	285.5	291.7
Selling, general and administrative expenses	55.7	64.0	165.2	189.9
Separation costs	2.0	7.4	33.0	16.8
Equity earnings from joint venture	(19.0)	(19.6)	(57.0)	(49.6)
Operating income	71.0	59.3	144.3	134.6
Interest expense	9.0	11.3	43.4	33.9
Other non-operating expense		10.8		13.5
Other non-operating (income)	(1.6)		(8.9)	(5.4)
Earnings from continuing operations before income taxes	63.6	37.2	109.8	92.6
Income tax expense	7.7	17.5	44.4	52.1
Earnings from continuing operations	55.9	19.7	65.4	40.5
Net earnings (loss) from discontinued operations, net of tax expense of $-, $7.4, $0.1 and $18.1		10.6	(4.5)	23.5
Gain from disposal of discontinued business, net of tax (benefit) of ($14.7), ($0.7), ($16.6) and ($44.1)	14.7	1.5	16.7	44.0
Net earnings from discontinued operations	14.7	12.1	12.2	67.5
Net earnings	70.6	31.8	77.6	108.0
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(2.0)	(13.4)	(13.8)	(21.3)
Derivative gain (loss)	1.7	0.9	1.2	(0.2)
Pension and postretirement adjustments	6.9	11.1	23.9	32.2
Total other comprehensive income (loss)	6.6	(1.4)	11.3	10.7
Total comprehensive income	$ 77.2	$ 30.4	$ 88.9	$ 118.7
Earnings per share of common stock, continuing operations:
Basic	$ 1.00	$ 0.35	$ 1.17	$ 0.72
Diluted	0.99	0.35	1.16	0.72
Earnings per share of common stock, discontinued operations:
Basic	0.26	0.22	0.22	1.21
Diluted	0.26	0.21	0.22	1.20
Net earnings per share of common stock:
Basic	1.27	0.57	1.39	1.93
Diluted	$ 1.26	$ 0.56	$ 1.38	$ 1.92
Average number of common shares outstanding:
Basic	55.5	55.5	55.6	55.4
Diluted	56.0	55.9	56.0	55.8