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Discontinued Operations - Non-Cash Items and Capital Expenditures (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Settlement of beneficial interests in securitizations |  | $ 0 | $ (79)
Discontinued Operations, Disposed Of By Means Other Than Sale, Wind Down | Zillow Offers Operations |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Amortization of debt discount and debt issuance costs |  |  | 21
Loss on debt extinguishment | $ 0 |  | 21
Share-based compensation |  |  | 16
Inventory valuation adjustment |  |  | 9
Depreciation and amortization |  |  | $ 7

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