Fair Value of Financial Information - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Long-term restricted funds	$ 19	$ 20
Secured Seller Promissory Note [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notes Payable		795
Other current assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other investments	$ 36	55
Fair Value \| Homeowner Services Group \| Disposal Group, Disposed of by Sale \| Level 3
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Secured seller promissory note from the sale of the Homeowner Services Group		$ 798

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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