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Discontinued Operations - Restructuring (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Employee termination costs |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Cumulative Amount Recognized |  | $ 10
Zillow Offers Operations | Employee termination costs |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Cumulative Amount Recognized | $ 33 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 85 | 482
Cumulative Amount Recognized | 567 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Inventory write-down |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 9 | 408
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Employee termination costs |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 20 | 52
Cumulative Amount Recognized | 72 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Financing-related charges |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 37 | 6
Cumulative Amount Recognized | 43 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Contract termination costs |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 4 | 10
Cumulative Amount Recognized | 14 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Accelerated depreciation and amortization |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 14 | 5
Cumulative Amount Recognized | 19 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Asset write-offs |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 0 | 1
Cumulative Amount Recognized | 1 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Other charges |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 1 | 0
Cumulative Amount Recognized | 1 |
Zillow Offers Operations | Disposal Group, Disposed of By Means Other Than Sale, Wind-Down | Total other charges |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Restructuring charges | 76 | $ 74
Cumulative Amount Recognized | $ 150 |

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