Segment Information (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011		Jun. 30, 2010
Net sales to external customers:
Net sales to external customers	$ 353.7	$ 305.1	$ 685.3		$ 568.1
Total sales	353.7	305.1	685.3		568.1
Operating income	49.4	40.5	96.6		64.3
Depreciation and amortization	13.8	13.6	27.9		25.6
Stock-based compensation expense	2.4	2.6	8.8		8.3
Other operating (income) expense			(5.7)		3.5
Accrual basis additions to capital expenditures	29.9	6.8	55.1		13.7
Operating income
Unrecognized service credits as a curtailment gain in U.K. plan			5.7
Environmental remediation expense	2.5	2.4	4.8		4.7
Composite Materials
Net sales to external customers:
Net sales to external customers	276.8	238.9	533.1		439.3
Intersegment sales	13.9	11.5	27.8		20.4
Total sales	290.7	250.4	560.9		459.7
Operating income	48.5	42.8	98.3	[1]	73.3
Depreciation and amortization	12.8	12.7	25.7		23.6
Stock-based compensation expense	0.9	1.1	2.5		2.7
Other operating (income) expense			(5.7)
Accrual basis additions to capital expenditures	28.4	6.2	52.7		13.0
Operating income
Unrecognized service credits as a curtailment gain in U.K. plan			5.7
Composite Materials | Commercial aerospace
Net sales to external customers:
Net sales to external customers	150.9	113.9	294.1		223.2
Composite Materials | Space and defense
Net sales to external customers:
Net sales to external customers	62.5	60.7	122.4		113.8
Composite Materials | Industrial
Net sales to external customers:
Net sales to external customers	63.4	64.3	116.6		102.3
Engineered Products
Net sales to external customers:
Net sales to external customers	76.9	66.2	152.2		128.8
Intersegment sales	0.2	0.3	0.5		0.3
Total sales	77.1	66.5	152.7		129.1
Operating income	11.9	10.7	24.4		22.1
Depreciation and amortization	1.0	0.9	2.1		1.9
Stock-based compensation expense	0.1	0.2	0.4		0.5
Accrual basis additions to capital expenditures	1.5	0.5	2.4		0.6
Engineered Products | Commercial aerospace
Net sales to external customers:
Net sales to external customers	56.9	47.1	111.3		89.8
Engineered Products | Space and defense
Net sales to external customers:
Net sales to external customers	19.2	18.7	39.0		38.1
Engineered Products | Industrial
Net sales to external customers:
Net sales to external customers	0.8	0.4	1.9		0.9
Corporate and Other
Net sales to external customers:
Intersegment sales	(14.1)	(11.8)	(28.3)		(20.7)
Total sales	(14.1)	(11.8)	(28.3)		(20.7)
Operating income	(11.0)	(13.0)	(26.1)		(31.1)	[2]
Depreciation and amortization			0.1		0.1
Stock-based compensation expense	1.4	1.3	5.9		5.1
Other operating (income) expense					3.5
Accrual basis additions to capital expenditures		0.1			0.1
Operating income
Environmental remediation expense					3.5
Commercial aerospace
Net sales to external customers:
Net sales to external customers	207.8	161.0	405.4		313.0
Space and defense
Net sales to external customers:
Net sales to external customers	81.7	79.4	161.4		151.9
Industrial
Net sales to external customers:
Net sales to external customers	$ 64.2	$ 64.7	$ 118.5		$ 103.2

[1] First six months 2011 operating income for Composite Materials includes a $5.7 million gain resulting from the curtailment of our U.K. pension plan.

[2] First six months 2010 operating income for Corporate and Other includes a $3.5 million charge to the environmental reserves primarily for remediation at a manufacturing facility sold in 1986.