Income Taxes - Summary of Valuation Allowance (Details) - USD ($) $ in Millions |
2 Months Ended | 4 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Dec. 31, 2021 |
Oct. 19, 2021 |
Dec. 31, 2022 |
Jun. 30, 2021 |
Jun. 30, 2020 |
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| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||||
| Valuation allowance balance – beginning of period | $ 29.1 | $ 20.7 | $ 29.0 | $ 18.7 | |
| Increases/(decreases) resulting from the Mirion Business Combination | $ 19.7 | 0.0 | (0.4) | 0.0 | 0.0 |
| Increases resulting from other business combinations | 0.0 | 0.0 | 0.0 | 0.5 | 0.3 |
| Other increases | 0.0 | 1.6 | 5.3 | 8.6 | 10.0 |
| Other decreases | 0.0 | 0.0 | (1.7) | (9.0) | 0.0 |
| Valuation allowance balance – end of period | 20.7 | $ 30.7 | $ 23.9 | $ 29.1 | $ 29.0 |
| GSAH | |||||
| Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||||
| Valuation allowance balance – beginning of period | $ 1.0 | ||||
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- Definition Valuation Allowance Deferred Tax Asset Increase (Decrease) From Mirion Business Combination No definition available.
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| X | ||||||||||
- Definition Valuation allowance deferred tax asset increases from business combination. No definition available.
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- Definition Valuation allowance deferred tax asset other decreases. No definition available.
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- Definition Valuation allowance deferred tax asset other increases. No definition available.
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Details
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