XML 57 R45.htm IDEA: XBRL DOCUMENT
v3.22.2

Debt Securities (Composition of Debt Securities Portfolio by Credit Rating Agencies) (Detail) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 8,450 | $ 9,362
Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 7,556 |
Percentage of debt securities by credit rating agencies | 89.40% |
Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 675 |
Percentage of debt securities by credit rating agencies | 8.00% |
Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 219 |
Percentage of debt securities by credit rating agencies | 2.60% |
U.S. Treasury bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 147 | 123
U.S. Treasury bonds | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 147 |
Percentage of debt securities by credit rating agencies | 100.00% |
U.S. Treasury bonds | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
U.S. Treasury bonds | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
Municipal bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 1,462 | 1,649
Municipal bonds | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 1,417 |
Percentage of debt securities by credit rating agencies | 96.90% |
Municipal bonds | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 45 |
Percentage of debt securities by credit rating agencies | 3.10% |
Municipal bonds | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
Foreign government bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 200 | 227
Foreign government bonds | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 192 |
Percentage of debt securities by credit rating agencies | 96.00% |
Foreign government bonds | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 5 |
Percentage of debt securities by credit rating agencies | 2.50% |
Foreign government bonds | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 3 |
Percentage of debt securities by credit rating agencies | 1.50% |
Governmental agency bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 129 | 177
Governmental agency bonds | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 129 |
Percentage of debt securities by credit rating agencies | 100.00% |
Governmental agency bonds | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
Governmental agency bonds | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
Governmental agency mortgage-backed securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 5,050 | 5,607
Governmental agency mortgage-backed securities | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 5,050 |
Percentage of debt securities by credit rating agencies | 100.00% |
Governmental agency mortgage-backed securities | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
Governmental agency mortgage-backed securities | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 0 |
Percentage of debt securities by credit rating agencies | 0.00% |
U.S. corporate debt securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 1,003 | 1,081
U.S. corporate debt securities | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 434 |
Percentage of debt securities by credit rating agencies | 43.30% |
U.S. corporate debt securities | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 390 |
Percentage of debt securities by credit rating agencies | 38.90% |
U.S. corporate debt securities | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 179 |
Percentage of debt securities by credit rating agencies | 17.80% |
Foreign corporate debt securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 459 | $ 498
Foreign corporate debt securities | Investment Grade | A- or higher |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 187 |
Percentage of debt securities by credit rating agencies | 40.70% |
Foreign corporate debt securities | Investment Grade | BBB+ to BBB- |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 235 |
Percentage of debt securities by credit rating agencies | 51.20% |
Foreign corporate debt securities | Non-Investment Grade |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Debt securities, Estimated fair value | $ 37 |
Percentage of debt securities by credit rating agencies | 8.10% |

X
- Definition Percentage of debt securities grade by rating agencies. + References No definition available. + Details
Name: | faf_PercentageOfDebtSecuritiesGradeByRatingAgencies
Namespace Prefix: | faf_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingInvestmentGradeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | faf_ExternalCreditRatingByGradeTypeAxis=faf_AMinusOrHigherRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | faf_ExternalCreditRatingByGradeTypeAxis=faf_BBBPlusToBBBMinusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=us-gaap_ExternalCreditRatingNonInvestmentGradeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasuryBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_DomesticCorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ForeignCorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |