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Discontinued Operations - Major Line Items Included in Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Operating expenses: |  |  |  |
Net loss from discontinued operations | $ (2) | $ (347) | $ (13) | $ (363)
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] |  |  |  |
Revenue | 23 | 1,187 | 4,249 | 2,668
Cost of revenue | 24 | 1,414 | 4,023 | 2,751
Gross profit (loss) | (1) | (227) | 226 | (83)
Operating expenses: |  |  |  |
Sales and marketing | 1 | 90 | 153 | 189
Technology and development | 0 | 10 | 6 | 41
General and administrative | 0 | 10 | 10 | 26
Restructuring costs | 0 | 0 | 25 | 0
Total operating expenses | 1 | 110 | 194 | 256
Income (loss) from discontinued operations | (2) | (337) | 32 | (339)
Loss on extinguishment of debt | 0 | 0 | (21) | 0
Other income | 0 | 0 | 13 | 0
Interest expense | 0 | (16) | (36) | (25)
Loss from discontinued operations before income taxes | (2) | (353) | (12) | (364)
Income tax benefit (expense) | 0 | 6 | (1) | 1
Net loss from discontinued operations | $ (2) | $ (347) | $ (13) | $ (363)
Net loss from discontinued operations per share: |  |  |  |
Basic (usd per share) | $ (0.01) | $ (1.37) | $ (0.05) | $ (1.46)
Diluted (usd per share) | $ (0.01) | $ (1.31) | $ (0.05) | $ (1.38)

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