v3.26.1
SIGNIFICANT DISPOSALS AND OTHER BUSINESS EXITS (Details)
shares in Millions, $ in Millions, $ in Billions
3 Months Ended 6 Months Ended 18 Months Ended
Apr. 29, 2026
USD ($)
shares
Jun. 30, 2026
USD ($)
market
business
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
market
business
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
market
business
Sep. 30, 2026
Jun. 12, 2026
USD ($)
Apr. 29, 2026
MXN ($)
shares
Feb. 18, 2026
USD ($)
Sep. 24, 2025
Disposal Group, Including Discontinued Operations [Line Items]                        
Number of international groups | market   14     14   14          
Number of businesses with sale agreements | business   10     10   10          
Currency translation adjustment (CTA), net of hedges [1]   $ 36   $ (1,966) $ (853) $ (2,815)            
Loss on sale of disposals [2]         (3) 186            
Banamex                        
Disposal Group, Including Discontinued Operations [Line Items]                        
Percentage owned of equity investment                       24.00%
Poland Consumer Banking Business | Discontinued Operations, Disposed of by Sale                        
Disposal Group, Including Discontinued Operations [Line Items]                        
Disposal group, assets                 $ 5,900      
Cash and deposits with banks                 1,200      
Deposits with banks                 2,200      
Loans                 1,600      
Disposal group, trading account assets                 800      
Liabilities                 5,700      
Allowance                 $ 24      
Loss on sale             $ 160          
Loss on sale after tax             $ 125          
Income before taxes   11   38 32 70            
Loss on revenue, before tax       186   186            
Loss on revenue, after tax       157   157            
AO Citibank | Discontinued Operations, Disposed of by Sale                        
Disposal Group, Including Discontinued Operations [Line Items]                        
Disposal group, assets                     $ 13,500  
Cash and deposits with banks                     2,000  
Liabilities                     13,700  
Income before taxes   $ 0   $ (297) $ 24 $ (314)            
Other assets                     11,400  
Deposits                     $ 1,700  
Loss on revenue, before tax     $ 1,200                  
Loss on revenue, after tax     $ 1,100                  
Grupo Financeiro Banamex | Disposal Group, Disposed of by Sale, Not Discontinued Operations                        
Disposal Group, Including Discontinued Operations [Line Items]                        
Interest in entity sold 0.226 0.226     0.226   0.226     0.226    
Amount sold (in shares) | shares 470                 470    
Disposal Group, Including Discontinued Operation, Consideration $ 2,300                 $ 43    
Changes in Citigroup’s equity for sale of 22.6% interest in Banamex (1,500)       $ 1,529              
Currency translation adjustment (CTA), net of hedges 2,000                      
Loss on sale of disposals $ 500                      
Net income attributable to Citigroup common shareholders         10,973              
Changes from net income attributable to Citigroup common shareholders and changes in Citigroup’s ownership interest         $ 12,502              
Grupo Financeiro Banamex | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Forecast                        
Disposal Group, Including Discontinued Operations [Line Items]                        
Interest in entity sold               0.014        
[1] The changes reflected in these line items are exclusive of the impacts of the Banamex equity sales. See the Consolidated Statement of Changes in Stockholders’ Equity and Notes 2 and 17.
[2]     See “Significant Disposals” in Note 2.