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The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amount awarded to other party in judgment or settlement of litigation.

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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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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Commitments and Contingencies (Details)			1 Months Ended					3 Months Ended		6 Months Ended			9 Months Ended
Commitments and Contingencies (Details)	Feb. 23, 2026 USD ($)	Mar. 21, 2024 USD ($)	Jun. 30, 2026 USD ($)	Apr. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Jan. 31, 2025 USD ($)	Oct. 31, 2023 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2026 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2025 USD ($)	Nov. 02, 2023 brokerage
Loss Contingencies [Line Items]
General and administrative								$ 93,000,000	$ 34,000,000		$ 174,000,000	$ 61,000,000
Letters of credit			$ 48,000,000					48,000,000			48,000,000			$ 31,000,000
FDIC insured amount			250,000					250,000			250,000
Escrow and trust deposits			1,300,000,000					1,300,000,000			1,300,000,000			$ 300,000,000
Anywhere Real Estate Inc
Loss Contingencies [Line Items]
Escrow and trust deposits			822,000,000					822,000,000			822,000,000
Burnett and Moehrl \| Judicial Ruling
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party							$ 84,000,000
Payments for legal settlements													$ 30,000,000
Burnett and Moehrl \| Judicial Ruling \| Forecast
Loss Contingencies [Line Items]
Payments for legal settlements										$ 54,000,000
Gibson
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party		$ 58,000,000
Tuccori v. At World Properties
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party	$ 10,000,000
Payments for legal settlements					$ 1,000,000
Batton, et al. v. Compass, Inc.
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party				$ 7,000,000
Payments for legal settlements			$ 1,000,000
Loss contingency, number of brokerages involved \| brokerage															7
Telephone Consumer Protection Act Litigation
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party						$ 20,000,000
Payments for legal settlements								$ 19,000,000
Antitrust Lawsuits
Loss Contingencies [Line Items]
General and administrative											$ 7,000,000