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v3.25.3

Debt - Narrative (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Debt Instrument [Line Items] |  |  |  |  |  |
Loss on extinguishment of debt |  | $ 0 | $ 0 | $ 0 | $ 1 |
2025 Notes | Convertible Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, repurchased face amount |  |  | $ 88 |  | 88 |
Cash paid for repurchase |  |  |  |  | 89 |
Loss on extinguishment of debt |  |  |  |  | $ 1 |
Repayment of principal amount |  |  |  | 419 |  |
Payments for debt |  |  |  | 425 |  |
Payments for debt, accrued interest |  |  |  | 6 |  |
2026 Notes | Convertible Debt | Common Class C |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Capped call transactions, portion unwound, shares received (in shares) | 3.1 |  |  |  |  |
Capped call transactions, portion unwound, cash received | $ 38 |  |  |  |  |
Atlas Securitized Products, L.P., JPMorgan Chase Bank, N.A, Citibank, N.A. | Mortgages Segment |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Short-term debt |  | $ 284 |  | $ 284 |  | $ 151

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