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Related Party Transactions - Transactions with the Relief Fund (Details) - Related Party - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2015 | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022
Related Party Transaction [Line Items] |  |  |  |
Remaining expense related to charitable contributions |  | $ 6.7 |  | $ 6.4
Accounts payable and accrued liabilities |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Remaining liability associated with charitable contributions |  | $ 15.6 | $ 9.2 |
Other expenses |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Charitable contributions | $ 40.0 |  |  |

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