Cover - shares	9 Months Ended
	Sep. 30, 2020	Oct. 31, 2020
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity File Number	1-32630
Entity Registrant Name	FIDELITY NATIONAL FINANCIAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	16-1725106
Entity Address, Address Line One	601 Riverside Avenue
Entity Address, City or Town	Jacksonville
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32204
City Area Code	904
Local Phone Number	854-8100
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		293,673,787
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001331875
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	FNF Common Stock, $0.0001 par value
Trading Symbol	FNF
Security Exchange Name	NYSE
5.50% Notes Due September 2022
Document Information [Line Items]
Title of 12(b) Security	5.50% Notes due September 2022
Trading Symbol	FNF22
Security Exchange Name	NYSE