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Financial Instruments And Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value Disclosures [Abstract] |
Gains (losses) recognized related to equity investments |
| Six Months Ended
| June 30,
| 2024 |  | 2023
Net losses recognized during the period on equity securities | $ | (1.8) |  |  | $ | (1.3) |
Less: Net gains (losses) recognized during the period on equity securities sold during the period | — |  |  | — |
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date | $ | (1.8) |  |  | $ | (1.3) |
Summary Of Carrying Values And Fair Values Of Fixed Rate Debt | A summary of the aggregate carrying values and fair values of our senior unsecured notes is as follows:
| June 30, 2024 |  | December 31, 2023
Carrying value | $ | 3,230.2 |  |  | $ | 3,228.1 |
Fair value | $ | 2,979.1 |  |  | $ | 2,979.3 |

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
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- Definition Tabular disclosure of realized and unrealized gain (loss) on investment in security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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