v3.25.4
SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Funding Commitments (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments $ 22,187 $ 16,351
Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 22,187 16,351
Non-agency-sponsored mortgage securitizations | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Non-agency-sponsored mortgage securitizations | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 435 566
Citi-administered asset-backed commercial paper conduits | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Citi-administered asset-backed commercial paper conduits | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Asset-based financing | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Asset-based financing | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 17,996 13,185
Municipal securities tender option bond trusts (TOBs) | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Municipal securities tender option bond trusts (TOBs) | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Municipal investments | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Municipal investments | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 3,666 2,502
Investment funds | Liquidity facilities    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments 0 0
Investment funds | Loan/equity commitments    
Funding Commitments for Significant Unconsolidated VIEs    
Total funding commitments $ 90 $ 98