Discontinued Operations - Non-Cash Items and Capital Expenditures (Details) - Discontinued Operations, Disposed Of By Means Other Than Sale, Wind Down - Zillow Offers Operations $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
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	21
Share-based compensation	16
Inventory valuation adjustment	9
Depreciation and amortization	7
Capital expenditures	1
Settlement of beneficial interests in securitizations	$ (79)

Future cash outflow to pay for purchases of fixed assets that have occurred.

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