v3.25.4
RESTRUCTURING - Narrative (Details)
$ in Millions
 12 Months Ended 27 Months Ended
Dec. 31, 2025
USD ($)
 [1]
Dec. 31, 2024
USD ($)
 [1]
Dec. 31, 2023
USD ($)
group
Dec. 31, 2025
USD ($)
Restructuring and Related Activities [Abstract]        
Number of international groups | group     1  
Restructuring charge | $ $ (14) $ 259 $ 781 [1] $ 1,026
[1] Effective January 1, 2025, certain transaction processing fees paid by Citi, primarily to credit card networks, which were previously presented within Other operating expenses, are presented as contra-revenue within Commissions and fees reported in Non-interest revenue. Prior periods were conformed to reflect this change in presentation.