Acquisitions And Strategic Partnership (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended				1 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Feb. 29, 2012 Latrobe Specialty Metals, Inc. [Member]	Mar. 31, 2012 Latrobe Specialty Metals, Inc. [Member]	Mar. 31, 2012 Latrobe Specialty Metals, Inc. [Member]	Dec. 31, 2010 Sandvik Powdermet AB [Member]	Dec. 31, 2010 Carpenter Powder Products AB [Member]	Dec. 15, 2011 Arwin Machining Plus, Ltd. [Member]	Dec. 31, 2010 Amega West Services, LLC [Member]	Jun. 27, 2011 Oilfield Alloys [Member]
Business Acquisition [Line Items]
Shares issued through business acquisition					8.1
Intangible assets												$ 1.5
Debt assumed in acquisition					153.7						12.4
Acquisition related costs	7.9		11.7	0.7		7.9	11.7
Transaction costs						5.2	5.2
Net sales since acquisition	622.0	577.8	1,696.0	1,481.9		42.0	42.0
Operating income since acquisition			2.2			2.2
Amount of goodwill expected to be tax deductible relating to the Amega West acquisition											8.3
Cash purchase price of acquired entity					427.0			6.2	9.1	1.4	41.6	4.8
Cash Acquired from Acquisition					2.5							0.3
Cash purchase price held back to pay earn-out participants											2.8
Earnout payments, guaranteed amount included in total purchase price											2.2
Ownership interest held by parent								40.00%
Ownership interest held by noncontrolling owners									40.00%
Current annual revenues reported by entity								20	20
Cash paid					11.5							4.1
Net cash acquired					2.5							0.3
Remaining purchase price												0.7
Purchase price allocation of working capital												1.2
Property, plant and equipment					173.8					0.7	25.9	1.7
Goodwill					$ 201.3					$ 0.7	$ 9.7	$ 0.4