Percentage Of Goodwill

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

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Goodwill and Other Intangible Assets, net - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2020 USD ($) reporting_unit	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2020 USD ($) reporting_unit
Goodwill [Line Items]
Number of reporting units \| reporting_unit					4
Goodwill impairment	$ 52.8	$ 0.0	$ 52.8	$ 0.0
Goodwill	241.4		241.4		$ 290.4
Accumulated goodwill impairment losses	$ (134.6)		(134.6)		(81.8)
Impairment of intangible assets			$ 11.6		$ 7.3
Special Alloy Operations Reporting Unit
Goodwill [Line Items]
Percentage of goodwill	81.00%		81.00%		67.00%
Additive Reporting Unit \| Technology Based Intangible Assets and Customer Relationships
Goodwill [Line Items]
Impairment of intangible assets	$ 0.0		$ 4.3
Performance Engineered Products
Goodwill [Line Items]
Number of reporting units \| reporting_unit	3				3
Goodwill impairment			52.8
Goodwill	$ 45.9		45.9		$ 94.9
Accumulated goodwill impairment losses	(134.6)		(134.6)
Specialty Alloy Operations
Goodwill [Line Items]
Goodwill	195.5		195.5		$ 195.5
Accumulated goodwill impairment losses	$ 0.0		$ 0.0