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Other Long-term Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2024
Other Liabilities, Noncurrent [Abstract] |
Schedule of Other Long-term Liabilities | Other long-term liabilities are comprised of the following:
|  | September 30, 2024 |  |  | December 31, 2023 |
Deferred revenue |  | $ | 119.3 |  |  | $ | 248.8 |
Asset retirement obligations |  |  | 135.5 |  |  |  | 103.0 |
Operating lease liabilities |  |  | 80.9 |  |  |  | 56.5 |
Other liabilities |  |  | 4.3 |  |  |  | 6.8 |
Total other long-term liabilities |  | $ | 340.0 |  |  | $ | 415.1 |
Components of deferred revenue | The following table shows the components of deferred revenue:
|  | September 30, 2024 |  |  | December 31, 2023 |
Contributions in aid of construction |  | $ | 89.3 |  |  | $ | 86.4 |
Gas contract amendment |  |  | 28.0 |  |  |  | 29.8 |
Splitter agreement |  |  | — |  |  |  | 129.0 |
Other |  |  | 2.0 |  |  |  | 3.6 |
Total deferred revenue |  | $ | 119.3 |  |  | $ | 248.8 |
Changes in Deferred revenue | The following table shows the changes in deferred revenue:
Balance at December 31, 2023 |  | $ | 248.8 |
Additions |  |  | 13.9 |
Reclassification to accrued liabilities |  |  | (129.0 | )
Revenue recognized |  |  | (14.4 | )
Balance at September 30, 2024 |  | $ | 119.3 |

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