Mirion Technologies, Inc. General form of registration statement for all companies including face-amount certificate companies

General form of registration statement for all companies including face-amount certificate companies

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- Nature of Business and Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Goodwill and Intangible Assets - Summary of Changes in the Carrying Value of Goodwill (Detail)

v3.21.2

Goodwill and Intangible Assets - Summary of Changes in the Carrying Value of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Goodwill [Line Items]
Beginning Balance	$ 522.6	$ 511.6
Translation adjustment	16.0	(6.1)
Ending balance	681.5	522.6
Capintec
Goodwill [Line Items]
Acquisition		6.0
Premium Analyse
Goodwill [Line Items]
Acquisition		4.3
Selmic
Goodwill [Line Items]
Acquisition		2.7
AWST
Goodwill [Line Items]
Acquisition		4.1
SunNuclear
Goodwill [Line Items]
Acquisition	130.2
Biodex
Goodwill [Line Items]
Acquisition	11.1
Dosimetrics
Goodwill [Line Items]
Acquisition	1.6
Medical
Goodwill [Line Items]
Beginning Balance	106.8	96.7
Translation adjustment	(0.2)	0.0
Ending balance	249.5	106.8
Medical \| Capintec
Goodwill [Line Items]
Acquisition		6.0
Medical \| Premium Analyse
Goodwill [Line Items]
Acquisition		0.0
Medical \| Selmic
Goodwill [Line Items]
Acquisition		0.0
Medical \| AWST
Goodwill [Line Items]
Acquisition		4.1
Medical \| SunNuclear
Goodwill [Line Items]
Acquisition	130.2
Medical \| Biodex
Goodwill [Line Items]
Acquisition	11.1
Medical \| Dosimetrics
Goodwill [Line Items]
Acquisition	1.6
Industrial
Goodwill [Line Items]
Beginning Balance	415.8	414.9
Translation adjustment	16.2	(6.1)
Ending balance	432.0	415.8
Industrial \| Capintec
Goodwill [Line Items]
Acquisition		0.0
Industrial \| Premium Analyse
Goodwill [Line Items]
Beginning Balance	4.3
Acquisition		4.3
Ending balance		4.3
Industrial \| Selmic
Goodwill [Line Items]
Beginning Balance	2.7
Acquisition		2.7
Ending balance		2.7
Industrial \| AWST
Goodwill [Line Items]
Acquisition		$ 0.0
Industrial \| SunNuclear
Goodwill [Line Items]
Acquisition	0.0
Industrial \| Biodex
Goodwill [Line Items]
Acquisition	0.0
Industrial \| Dosimetrics
Goodwill [Line Items]
Acquisition	$ 0.0

- 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
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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-Publisher FASB
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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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.

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