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v3.23.1

Future Policy Benefits - Summary of Balances and Changes in the Deferred Profit Liability (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Immediate Annuities |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Balance, beginning of year | $ 69 | $ 57 | $ 22 |
Effect of modeling changes |  | 4 | 0 | $ 0
Effect of changes in cash flow assumptions |  | 0 | 0 | 0
Effect of actual variances from expected experience |  | 4 | 16 | 39
Balance adjusted for variances from expectation |  | 77 | 73 | 61
Issuances | 1 | 1 | 0 |
Interest accrual | 1 | 2 | 2 |
Amortization | (2) | (7) | (6) |
Balance, end of year | 77 | 69 | 57 |
PRT |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Balance, beginning of year | 4 | 7 | 0 |
Effect of modeling changes |  | 0 | 0 | 0
Effect of changes in cash flow assumptions |  | 0 | (2) | 0
Effect of actual variances from expected experience |  | 0 | 0 | 0
Balance adjusted for variances from expectation |  | 4 | 5 | $ 0
Issuances | 0 | 0 | 7 |
Interest accrual | 0 | 0 | 0 |
Amortization | 0 | (1) | 0 |
Balance, end of year | $ 4 | $ 4 | $ 7 |

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- Definition Deferred Profit Liability + References No definition available. + Details
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Namespace Prefix: | fnf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Deferred Profit Liability, Amortization + References No definition available. + Details
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Namespace Prefix: | fnf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Deferred Profit Liability, before Reinsurance, after Cash Flow Change + References No definition available. + Details
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- Definition Deferred Profit Liability, Cumulative Increase (Decrease) of Actual Variance from Expected Experience + References No definition available. + Details
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- Definition Deferred Profit Liability, Effect Of Changes In Cash Flow Assumptions + References No definition available. + Details
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Namespace Prefix: | fnf_
Data Type: | xbrli:monetaryItemType
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- Definition Deferred Profit Liability, Effect Of Modeling Changes + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Deferred Profit Liability, Interest Expense + References No definition available. + Details
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- Definition Deferred Profit Liability, Issuance + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- 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
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |