Business Segments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Segment Data
Net sales	$ 498.6	$ 544.9
Pension earnings, interest & deferrals	(6.0)	(8.0)
Operating income	55.8	61.6
Depreciation and amortization	26.7	25.5
Capital Expenditures	114.9	56.4
Assets	2,925.5		2,882.9
Specialty Alloys Operations
Segment Data
Net sales	394.9	431.0
Operating income	63.7	67.2
Depreciation and amortization	19.5	18.6
Capital Expenditures	108.5	46.7
Assets	2,282.3		2,192.7
Performance Engineered Products
Segment Data
Net sales	118.5	134.9
Operating income	11.6	14.5
Depreciation and amortization	5.8	5.4
Capital Expenditures	6.0	8.7
Assets	516.6		498.5
Corporate
Segment Data
Operating income	(12.9)	(10.4)
Depreciation and amortization	1.4	1.5
Capital Expenditures	0.6	1.5
Assets	169.8		233.7
Intersegment
Segment Data
Net sales	(14.8)	(21.0)
Operating income	(0.6)	(1.7)
Capital Expenditures	(0.2)	(0.5)
Assets	$ (43.2)		$ (42.0)