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Goodwill and Intangible Assets, net - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items] |  |  |
Impairment and restructuring costs | $ 0 | $ 57,000,000 | $ 77,000,000
Trulia | IMT |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Impairment and restructuring costs |  |  | 69,000,000
Trulia | Mortgages |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Impairment and restructuring costs |  |  | 3,000,000
Trade names and trademarks | Trulia |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Impairment and restructuring costs | 0 | 0 | 72,000,000
Technology and development |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |
Amortization of website development costs and intangible assets included in technology and development | $ 58,000,000 | $ 56,000,000 | $ 49,000,000

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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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