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Discontinued Operations - Major Line Items Included in Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating expenses:
Net loss from discontinued operations	$ 0	$ (9)
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		3,721
Cost of revenue		3,530
Gross profit		191
Operating expenses:
Sales and marketing		133
Technology and development		6
General and administrative		7
Restructuring costs		24
Total operating expenses		170
Income from discontinued operations		21
Loss on extinguishment of debt		(14)
Other income		6
Interest expense		(36)
Loss from discontinued operations before income taxes		(23)
Income tax benefit		14
Net loss from discontinued operations		$ (9)
Net loss from discontinued operations per share:
Basic (usd per share)		$ (0.04)
Diluted (usd per share)		$ (0.04)

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