v3.23.1
Cover Page
May 10, 2023
Cover [Abstract]  
Entity Central Index Key 0000798941
Amendment Flag false
Document Type 8-K
Document Period End Date May 10, 2023
Entity Registrant Name First Citizens BancShares Inc /DE/
Entity Incorporation, State or Country Code DE
Entity File Number 001-16715
Entity Tax Identification Number 56-1528994
Entity Address, Address Line One 4300 Six Forks Road
Entity Address, City or Town Raleigh
Entity Address, State or Province NC
Entity Address, Postal Zip Code 27609
City Area Code 919
Local Phone Number 716-7000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Document Period End Date May 10, 2023
Common Class A [Member]  
Cover [Abstract]  
Security Exchange Name NASDAQ
Title of 12(b) Security Class A Common Stock, Par Value $1
Trading Symbol FCNCA
Security Exchange Name NASDAQ
Series A Preferred Stock [Member]  
Cover [Abstract]  
Security Exchange Name NASDAQ
Title of 12(b) Security Depositary Shares, Each Representing a 1/40th Interest in a Share of 5.375% Non-Cumulative Perpetual Preferred Stock, Series A
Trading Symbol FCNCP
Security Exchange Name NASDAQ
Series C Preferred Stock  
Cover [Abstract]  
Security Exchange Name NASDAQ
Title of 12(b) Security 5.625% Non-Cumulative Perpetual Preferred Stock, Series C
Trading Symbol FCNCO
Security Exchange Name NASDAQ