Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Home service plans, typical term	1 year
Advertising expense	$ 170,000,000	$ 156,000,000	$ 115,000,000
Recognition requirements lease term	12 months
Depreciation of property and equipment, including depreciation of assets held under finance leases	$ 35,000,000	$ 32,000,000	$ 27,000,000
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	$ 184,000,000
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, adoption date	Dec. 31, 2024
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate202307Member
New Home Warranty Insurance Company [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Statutory capital and surplus	$ 5,000,000
Statutory net loss	1,000,000
Statutory dividend payments	$ 0