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Fair Value (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value Disclosures [Abstract] |
Summary of Components of Fair Value Measurements of Financial Assets and Liabilities | The areas in which we utilize fair value measures of financial assets and liabilities are presented in the table below.
| As of September 30, 2024
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Bank time deposits with original maturities of three months or less | $ | — |  |  | $ | 130.4 |  |  | $ | — |  |  | $ | 130.4 |
Derivative assets (Note N) | — |  |  | 3.0 |  |  | — |  |  | 3.0 |
Diversified investments associated with the ESU Program | 55.2 |  |  | — |  |  | — |  |  | 55.2 |
Total assets | $ | 55.2 |  |  | $ | 133.4 |  |  | $ | — |  |  | $ | 188.6 |
Liabilities: |  |  |  |  |  |  |
Derivative liabilities (Note N) | $ | — |  |  | $ | 2.2 |  |  | $ | — |  |  | $ | 2.2 |
Liabilities associated with the ESU Program | 56.8 |  |  | — |  |  | — |  |  | 56.8 |
Total liabilities | $ | 56.8 |  |  | $ | 2.2 |  |  | $ | — |  |  | $ | 59.0 |
| As of December 31, 2023
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Bank time deposits with original maturities of three months or less | $ | — |  |  | $ | 147.5 |  |  | $ | — |  |  | $ | 147.5 |
Derivative assets (Note N) | — |  |  | 6.2 |  |  | — |  |  | 6.2 |
Diversified investments associated with the ESU Program | 50.4 |  |  | — |  |  | — |  |  | 50.4 |
Total assets | $ | 50.4 |  |  | $ | 153.7 |  |  | $ | — |  |  | $ | 204.1 |
Liabilities: |  |  |  |  |  |  |
Derivative liabilities (Note N) | $ | — |  |  | $ | 3.5 |  |  | $ | — |  |  | $ | 3.5 |
Liabilities associated with the ESU Program | 52.4 |  |  | — |  |  | — |  |  | 52.4 |
Total liabilities | $ | 52.4 |  |  | $ | 3.5 |  |  | $ | — |  |  | $ | 55.9 |

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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/2009/role/commonPracticeRef -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 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -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 + Details
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