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CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement of Stockholders' Equity [Abstract]
Dividend to shareholders, pro rata percentage of common stock	15.00%	15.00%

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- Definition

Dividend to Shareholders, Pro Rata Percentage of Common Stock

+ References

No definition available.

+ Details

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Namespace Prefix:	fnf_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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