v3.26.1
COVER PAGE
 3 Months Ended
Mar. 31, 2026
shares
Entity Information [Line Items]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Mar. 31, 2026
Document Transition Report false
Entity File Number 1-9924
Entity Registrant Name Citigroup Inc
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 52-1568099
Entity Address, Address Line One 388 Greenwich Street,
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10013
City Area Code 212
Local Phone Number 559-1000
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 1,705,576,955
Entity Central Index Key 0000831001
Amendment Flag false
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q1
Common Stock, par value $.01 per share  
Entity Information [Line Items]  
Trading Symbol C
Title of 12(b) Security Common Stock, par value $.01 per share
Security Exchange Name NYSE
Depositary Shares, each representing a 1/1,000th interest in a share of 6.250% Noncumulative Preferred Stock, Series II  
Entity Information [Line Items]  
Trading Symbol C PR R
Title of 12(b) Security Dep Shs, represent 1/1,000th interest in a share of 6.250% Noncum Pref Stk, Ser II
Security Exchange Name NYSE
7.625% Trust Preferred Securities of Citigroup Capital III (and registrant’s guaranty with respect thereto)  
Entity Information [Line Items]  
Trading Symbol C/36Y
Title of 12(b) Security 7.625% TRUPs of Cap III (and registrant’s guaranty)
Security Exchange Name NYSE
7.875% Fixed Rate / Floating Rate Trust Preferred Securities (TruPS®) of Citigroup Capital XIII (and registrant’s guaranty with respect thereto)  
Entity Information [Line Items]  
Trading Symbol C N
Title of 12(b) Security 7.875% FXD / FRN TruPS of Cap XIII (and registrant’s guaranty)
Security Exchange Name NYSE
Medium-Term Senior Notes, Series N, Callable Fixed Rate Notes Due April 26, 2028 of CGMHI (and registrant’s guaranty with respect thereto)  
Entity Information [Line Items]  
Trading Symbol C/28
Title of 12(b) Security MTN, Series N, Callable Fixed Rate Notes Due Apr 2028 of CGMHI (and registrant’s guaranty)
Security Exchange Name NYSE
Medium-Term Senior Notes, Series N, Floating Rate Notes Due September 17, 2026 of CGMHI  
Entity Information [Line Items]  
Trading Symbol C/26
Title of 12(b) Security MTN, Series N, Floating Rate Notes Due Sept 2026 of CGMHI (and registrant’s guaranty)
Security Exchange Name NYSE
Medium-Term Senior Notes, Series N, Floating Rate Notes Due September 15, 2028 of CGMHI  
Entity Information [Line Items]  
Trading Symbol C/28A
Title of 12(b) Security MTN, Series N, Floating Rate Notes Due Sept 2028 of CGMHI (and registrant’s guaranty)
Security Exchange Name NYSE
Medium-Term Senior Notes, Series N, Floating Rate Notes Due October 6, 2028 of CGMHI  
Entity Information [Line Items]  
Trading Symbol C/28B
Title of 12(b) Security MTN, Series N, Floating Rate Notes Due Oct 2028 of CGMHI (and registrant’s guaranty)
Security Exchange Name NYSE
Medium-Term Senior Notes, Series N, Floating Rate Notes Due March 29, 2029 of CGMHI  
Entity Information [Line Items]  
Trading Symbol C/29A
Title of 12(b) Security MTN, Series N, Floating Rate Notes Due Mar 2029 of CGMHI (and registrant’s guaranty)
Security Exchange Name NYSE