XML 126 R109.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair Value Measurements (Narrative) (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 USD ($) NotesReceivable | Dec. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair value assets, Level 1 to Level 2 transfers amount | $ 0 | $ 0
Fair value assets, Level 2 to Level 1 transfers amount | 0 | 0
Fair Value Assets Level 1 To Level 3 Transfers Amount | 0 | 0
Fair Value Assets Level 3 To Level 1 Transfers Amount | 0 | 0
Fair Value Assets Level 2 To Level 3 Transfers Amount | 0 | 0
Fair Value Assets Level 3 To Level 2 Transfers Amount | $ 0 | $ 0
Number of notes included in receivable balance | NotesReceivable | 2 |
Minimum |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Notes, maturity term | 3 months |
Maximum |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Notes, maturity term | 14 months |

X
- Definition Fair value asset level 1 to level 2 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetLevel1ToLevel2TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value asset level 2 to level 1 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetLevel2ToLevel1TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value assets level 1 to level 3 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetsLevel1ToLevel3TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value assets level 2 to level 3 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetsLevel2ToLevel3TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value assets level 3 to level 1 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetsLevel3ToLevel1TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value assets level 3 to level 2 transfers amount. + References No definition available. + Details
Name: | faf_FairValueAssetsLevel3ToLevel2TransfersAmount
Namespace Prefix: | faf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of notes included in receivable balance. + References No definition available. + Details
Name: | faf_NumberOfNotesIncludedInReceivableBalance
Namespace Prefix: | faf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |