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Document And Entity Information
Nov. 07, 2023
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Period End Date Nov. 07, 2023
Entity Registrant Name First American Financial Corp
Entity Central Index Key 0001472787
Entity Emerging Growth Company false
Securities Act File Number 001-34580
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 26-1911571
Entity Address, Address Line One 1 First American Way
Entity Address, City or Town Santa Ana
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92707-5913
City Area Code (714)
Local Phone Number 250-3000
Entity Information, Former Legal or Registered Name Not Applicable
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, $0.00001 par value
Trading Symbol FAF
Security Exchange Name NYSE