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Reserve for Known and Incurred but Not Reported Claims (Narrative) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reserve For Known And Incurred But Not Reported Claims [Line Items] |  |  |
Payments, net of recoveries, related to: Current year | $ 227 | $ 292 | $ 268
Payments, net of recoveries, related to: Prior years | $ 207 | $ 190 | $ 203
Provision for title loss, percentage of title premiums and escrow fees | 4.00% | 4.00% | 5.00%
Ultimate loss rate | 4.00% | 4.00% | 4.50%
Estimated percentage increase in loss reserve for prior policy years |  |  | 0.50%
Estimated increase in loss reserve for prior policy years | $ 0 | $ 0 | $ 26

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- Definition Increase in loss reserve estimates for prior policy years. + References No definition available. + Details
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- Definition The provision for title losses expressed as a percentage of title premiums and escrow fees. + References No definition available. + Details
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- Definition Percentage increase in loss reserve estimates for prior policy years. + References No definition available. + Details
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- Definition Reserve for known and incurred but not reported claims. + References No definition available. + Details
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- Definition Ultimate loss rate percentage. + References No definition available. + Details
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- Definition Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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- Definition Amount, after effects of reinsurance, of payments to settle claims incurred in prior periods and related claims settlement costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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