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Fair Value of Assets and Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2023
Fair Value Disclosures [Abstract] |
Summary of Assets and Liabilities Recorded at Fair Market Value | Assets and liabilities subject to fair value measurement by fair value level are recorded as follows:
|  |  |  | Successor |  |  | Predecessor
|  |  |  | September 30, 2023 |  |  | December 31, 2022
|  |  |  |  |  | Fair Value Measurements Using |  |  |  |  | Fair Value Measurements Using
|  | Classification on condensed consolidated Balance Sheets |  | Fair Value |  | Level 1 |  | Level 2 |  |  | Fair Value |  | Level 1 |  | Level 2
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | Short-term investments |  | $ | 16.6 |  |  | $ | 16.6 |  |  | $ | — |  |  |  | $ | 24.6 |  |  | $ | 24.6 |  |  | $ | — |
Assets held in rabbi trusts |  | Securities and other investments |  | 2.8 |  |  | 2.8 |  |  | — |  |  |  | 4.4 |  |  | 4.4 |  |  | — |
Total |  |  |  | $ | 19.4 |  |  | $ | 19.4 |  |  | $ | — |  |  |  | $ | 29.0 |  |  | $ | 29.0 |  |  | $ | — |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred compensation |  | Other liabilities |  | 2.8 |  |  | 2.8 |  |  | — |  |  |  | 4.4 |  |  | 4.4 |  |  | — |
Total |  |  |  | $ | 2.8 |  |  | $ | 2.8 |  |  | $ | — |  |  |  | $ | 4.4 |  |  | $ | 4.4 |  |  | $ | — |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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