Supplemental Disclosures to Consolidated Statements of Cash Flows - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Millions |
2 Months Ended | 4 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2021 |
Oct. 19, 2021 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Jun. 30, 2021 |
Oct. 20, 2021 |
Jul. 01, 2021 |
Jun. 30, 2020 |
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| Cash Paid For: | |||||||||
| Cash paid for interest | $ 5.5 | $ 10.0 | $ 58.5 | $ 37.1 | $ 37.4 | ||||
| Cash paid for income taxes | 2.9 | 4.3 | 26.3 | 12.5 | 19.3 | ||||
| Non-Cash Investing and Financing Activities: | |||||||||
| Contingent consideration from acquisitions | 0.5 | 0.8 | 0.0 | 0.0 | 0.0 | ||||
| Property, plant, and equipment purchases in accounts payable | 0.1 | (1.8) | 2.1 | 0.2 | 3.2 | ||||
| Property, plant, and equipment purchases in accrued expense and other liabilities | 0.0 | 0.0 | 1.4 | 0.0 | 0.0 | ||||
| Acquisition purchases in accrued expense and other liabilities | 0.0 | 0.1 | 0.0 | 0.0 | 2.1 | ||||
| Common Shares issued to Mirion Sellers in Mirion Business Combination | 420.7 | $ 420.7 | 0.0 | 0.0 | 0.0 | 0.0 | |||
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] | |||||||||
| Cash and cash equivalents | 84.0 | 84.0 | 101.8 | 128.8 | 73.5 | 101.1 | |||
| Restricted cash—current | 0.6 | 0.6 | 0.8 | 0.6 | 0.5 | 0.8 | |||
| Restricted cash—non-current | 0.7 | 0.7 | 0.5 | 1.1 | 1.0 | 0.5 | |||
| Total cash, cash equivalents, and restricted cash | $ 85.3 | $ 85.3 | $ 103.1 | $ 130.5 | $ 75.0 | $ 102.4 | $ 750.2 | $ 102.4 | $ 120.0 |
| X | ||||||||||
- Definition Acquisition Purchases in Accrued Expense and Other Liabilities No definition available.
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| X | ||||||||||
- Definition Contingent Consideration From Acquisitions No definition available.
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| X | ||||||||||
- Definition Property, plant, and equipment purchases in accounts payable. No definition available.
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- Definition Property, Plant, And Equipment Purchases In Accrued Expense And Other Liabilities No definition available.
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- Definition Stock Issued During Period, Noncontrolling Interests Value, New Issues No definition available.
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| X | ||||||||||
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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