XML 90 R78.htm IDEA: XBRL DOCUMENT v3.21.2

Value of Business Acquired, Deferred Acquisition Costs and Deferred Sales Inducements - Narrative (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Amortization	$ 436	$ 61
VOBA
Finite-Lived Intangible Assets [Line Items]
Amortization	376	56
Adjustment for net unrealized investment gains	$ 245	228
VOBA | Minimum
Finite-Lived Intangible Assets [Line Items]
Interest accrual rate utilized to calculate accretion of interest	0.00%
VOBA | Maximum
Finite-Lived Intangible Assets [Line Items]
Interest accrual rate utilized to calculate accretion of interest	4.71%
DAC
Finite-Lived Intangible Assets [Line Items]
Amortization	$ 34	3
Adjustment for net unrealized investment gains	44	15
Deferred sales inducement, unrealized investment gains	6	$ 4
Change in Accounting Method Accounted for as Change in Estimate
Finite-Lived Intangible Assets [Line Items]
Amortization	$ 136

X

- Definition

Value of Business Acquired, Assumption, Interest Rate to Calculate Accretion on Intangible Asset

+ References

No definition available.

+ Details

Name:	fnf_ValueofBusinessAcquiredAssumptionInterestRatetoCalculateAccretiononIntangibleAsset
Namespace Prefix:	fnf_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of amortization expense (reversal of expense) for deferred policy acquisition costs and present value of future profits from insurance contract acquired in business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section S99
-Paragraph 2
-Subparagraph (2)
-URI http://asc.fasb.org/extlink&oid=122135039&loc=d3e569990-122904

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35755530&loc=d3e11264-158415

+ Details

Name:	us-gaap_DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of unrealized investment gain (loss) which decreases (increases) deferred sales inducement cost.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredSalesInducementCostUnrealizedGainLossOnInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of unrealized investment gain (loss) which decreases (increases) present value of future profits of insurance contract acquired in business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_PresentValueOfFutureInsuranceProfitsUnrealizedGainLossOnInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=fnf_VobaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=fnf_DacMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ChangeInAccountingEstimateByTypeAxis=us-gaap_ChangeInAccountingMethodAccountedForAsChangeInEstimateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: