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Discontinued Operations - Non-Cash Items and Capital Expenditures (Details) - Discontinued Operations, Disposed Of By Means Other Than Sale, Wind Down - Zillow Offers Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amortization of debt discount and debt issuance costs	$ 21	$ 11	$ 0
Loss on debt extinguishment	21	0	0
Share-based compensation	16	40	27
Inventory valuation adjustment	9	408	0
Depreciation and amortization	7	10	6
Capital expenditures	1	6	8
Issuance (settlement) of beneficial interests in securitizations	$ (79)	$ 63	$ 0

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