Business Segments (Results Of Operation By Reportable Segments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011
Segment Reporting Information [Line Items]
Consolidated net sales	$ 539.9	$ 464.2	$ 1,385.1	$ 1,191.5
Consolidated operating income	55.7	35.2	143.6	61.4
Consolidated depreciation and amortization	21.3	17.8	58.5	48.0
Consolidated capital expenditures	47.0	17.9	107.3	35.6
Consolidated total assets	2,596.3		2,596.3		1,991.9
Specialty Alloys Operations [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	426.0	400.1	1,122.2	1,023.1
Consolidated operating income	66.7	42.1	163.9	94.8
Consolidated depreciation and amortization	13.4	13.0	39.5	37.8
Consolidated capital expenditures	34.9	9.9	74.5	23.6
Consolidated total assets	1,265.0		1,265.0		1,186.2
Performance Engineered Products [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	85.6	71.4	252.1	166.0
Consolidated operating income	9.8	11.4	32.0	22.8
Consolidated depreciation and amortization	4.5	3.5	13.0	6.3
Consolidated capital expenditures	7.9	8.2	26.7	10.8
Consolidated total assets	359.1		359.1		319.6
Latrobe [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	56.3	10.0	75.9	28.5
Consolidated operating income	2.9	1.2	4.2	1.6
Consolidated depreciation and amortization	2.0	0.1	2.2	0.2
Consolidated capital expenditures	1.9		1.9	0.3
Consolidated total assets	837.6		837.6		29.9
Corporate Costs [Member]
Segment Reporting Information [Line Items]
Consolidated operating income	(18.5)	(9.0)	(41.2)	(29.5)
Consolidated depreciation and amortization	1.4	1.2	4.0	3.7
Consolidated capital expenditures	2.7	0.4	6.0	1.5
Consolidated total assets	149.8		149.8		471.7
Pension Earnings, Interest & Deferrals [Member]
Segment Reporting Information [Line Items]
Consolidated operating income	(3.8)	(8.8)	(11.1)	(26.4)
Intersegment [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	(28.0)	(17.3)	(65.1)	(26.1)
Consolidated operating income	(1.4)	(1.7)	(4.2)	(1.9)
Consolidated depreciation and amortization			(0.2)
Consolidated capital expenditures	(0.4)	(0.6)	(1.8)	(0.6)
Consolidated total assets	$ (15.2)		$ (15.2)		$ (15.5)