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Business and Basis of Presentation - Additional Information (Details) $ in Millions | Jul. 01, 2023 | Sep. 30, 2025 USD ($) Company
--- | --- | ---
Long-Lived Assets Held-for-sale [Line Items] |  |
Number of holding companies with outstanding public debt | Company |  | 2
Future Equity Investments |  |
Long-Lived Assets Held-for-sale [Line Items] |  |
Investments, authorized amount to invest |  | $ 1,500
Sound Point Capital Management, LP |  |
Long-Lived Assets Held-for-sale [Line Items] |  |
Ownership interest | 0.30 |
Sound Point Capital Management, LP | Future Equity Investments |  |
Long-Lived Assets Held-for-sale [Line Items] |  |
Investments, authorized amount to invest |  | 1,000
Disposal Group, Held-for-sale, Not Discontinued Operations |  |
Long-Lived Assets Held-for-sale [Line Items] |  |
Assets held for sale |  | 30
Liabilities held for sale |  | $ 4

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