Segment Information (Narrative) (Detail) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) State	Jun. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of states issues title insurance policies \| State		49
Number of states issues home warranty contracts \| State		35
Net investment gains (losses) \| $		$ (176)	$ 153
Operating Segment \| Corporate
Segment Reporting Information [Line Items]
Net investment gains (losses) \| $	$ 44		$ 86

Amount of realized and unrealized gain (loss) on investment.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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