Condensed Consolidated Statements Of Earnings And Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Condensed Consolidated Statements Of Earnings And Comprehensive Income [Abstract]
Net sales	$ 632.7	$ 659.1	$ 1,184.1		$ 1,249.1
Cost of goods sold	474.8	512.1	896.7		960.0
Gross profit	157.9	147.0	287.4		289.1
Selling, general and administrative expenses	106.1	100.2	209.1		203.3
Separation costs	5.1		9.4
Goodwill impairment		0.8			0.8
Equity earnings from joint venture	(16.4)	(17.6)	(30.0)		(32.4)
Operating income	63.1	63.6	98.9		117.4
Interest expense	11.4	11.8	22.6		23.4
Other non-operating expense	0.2	1.2	1.5		6.6
Other non-operating (income)	(3.6)	(0.6)	(4.2)		(1.2)
Earnings from continuing operations before income taxes	55.1	51.2	79.0		88.6
Income tax expense	25.2	24.6	45.3		43.9
Earnings from continuing operations	29.9	26.6	33.7		44.7
Net loss from discontinued operations, net of tax benefit of ($-), ($-), ($-) and ($-)		(5.6)			(6.8)
(Loss) earnings from disposal of discontinued business, net of tax benefit of ($-), ($1.2), ($43.4) and ($1.2)	(0.3)	(2.1)	42.5		(2.1)
Net (loss) earnings from discontinued operations	(0.3)	(7.7)	42.5		(8.9)
Net earnings	29.6	18.9	76.2		35.8
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	7.4	4.5	(7.9)		4.1
Derivative loss	(0.6)	(5.6)	(1.1)		(6.2)
Pension and postretirement adjustments	9.2	5.7	21.1		12.8
Total other comprehensive income	16.0	4.6	12.1	[1]	10.7	[1]
Total comprehensive income	$ 45.6	$ 23.5	$ 88.3		$ 46.5
Earnings per share of common stock, continuing operations:
Basic	$ 0.53	$ 0.48	$ 0.60		$ 0.81
Diluted	0.53	0.48	0.60		0.80
(Loss) earnings per share of common stock, discontinued operations:
Basic	(0.01)	(0.14)	0.76		(0.16)
Diluted	(0.01)	(0.14)	0.76		(0.16)
Net earnings per share of common stock:
Basic	0.53	0.34	1.36		0.65
Diluted	$ 0.53	$ 0.34	$ 1.36		$ 0.64
Average number of common shares outstanding:
Basic	55.5	54.8	55.4		54.8
Diluted	55.8	55.3	55.8		55.2

[1] Amounts are net of tax