Schedule I - Condensed Financial Information of the Registrant - CONDENSED BALANCE SHEET (Details) - USD ($) $ in Millions |
Dec. 31, 2022 |
Jun. 30, 2022 |
Dec. 31, 2021 |
Oct. 20, 2021 |
Oct. 19, 2021 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|---|---|---|---|---|---|---|---|---|
| ASSETS | ||||||||
| Other assets | $ 24.3 | $ 24.7 | $ 16.2 | |||||
| Total assets | 2,738.7 | 3,118.0 | 1,547.2 | |||||
| LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) | ||||||||
| Total liabilities | 1,271.5 | 1,334.0 | 2,386.7 | |||||
| Additional paid-in capital | 1,882.4 | 1,845.5 | 9.5 | |||||
| Accumulated deficit | (408.5) | (131.6) | (888.0) | |||||
| Accumulated other comprehensive (loss) income | (75.7) | (20.7) | 39.2 | |||||
| Mirion Technologies, Inc. (Successor) stockholders’ equity | 1,398.2 | 1,693.2 | (841.6) | |||||
| Noncontrolling interests | 69.0 | 90.8 | 2.1 | |||||
| Total stockholders’ equity | 1,467.2 | 1,784.0 | $ (109.4) | $ (944.1) | (839.5) | $ (716.5) | $ (587.7) | |
| Total liabilities and stockholders’ equity | 2,738.7 | 3,118.0 | 1,547.2 | |||||
| Parent Company | ||||||||
| ASSETS | ||||||||
| Other assets | $ 0.3 | 0.1 | ||||||
| Investments in Sub | 1,496.8 | 839.8 | 1,851.1 | 716.5 | ||||
| Total assets | 1,496.8 | 0.3 | 1,851.1 | 0.1 | ||||
| LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) | ||||||||
| Warrant liabilities | 30.5 | 68.1 | ||||||
| Deferred income taxes and other liabilities | (0.9) | 0.1 | (1.0) | 0.1 | ||||
| Total liabilities | 29.6 | 839.9 | 67.1 | 716.6 | ||||
| Additional paid-in capital | 1,882.4 | 1,845.5 | ||||||
| Accumulated deficit | (408.5) | (131.6) | ||||||
| Accumulated other comprehensive (loss) income | (75.7) | (20.7) | ||||||
| Mirion Technologies, Inc. (Successor) stockholders’ equity | 1,398.2 | (839.6) | 1,693.2 | (716.5) | ||||
| Noncontrolling interests | 69.0 | 90.8 | ||||||
| Total stockholders’ equity | 1,467.2 | 1,784.0 | ||||||
| Total liabilities and stockholders’ equity | $ 1,496.8 | $ 0.3 | $ 1,851.1 | $ 0.1 |
| X | ||||||||||
- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences, after deferred tax asset, and other liabilities expected to be paid after one year or operating cycle, if longer. No definition available.
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| X | ||||||||||
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of investments, and noncurrent assets classified as other. No definition available.
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| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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