XML 115 R92.htm IDEA: XBRL DOCUMENT v3.24.2.u1
INVESTMENTS - Overview (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Investments            
Debt securities available-for-sale (AFS)   $ 249,362   $ 249,362   $ 256,936
Debt securities held-to-maturity (HTM)   251,125   251,125   254,247
Marketable equity securities carried at fair value   165   165   258
Non-marketable equity securities carried at fair value   531   531   508
Non-marketable equity securities measured using the measurement alternative   1,717   1,717   1,639
Non-marketable equity securities carried at cost   5,376   5,376   5,497
Total investments   508,276   508,276   519,085
Accrued interest receivable   2,000   2,000   2,000
Interest and dividends on investments            
Taxable interest   4,637 $ 4,284 9,328 $ 8,284  
Interest exempt from U.S. federal income tax   81 84 161 169  
Dividend income   103 83 181 142  
Total interest and dividend income on investments   4,821 4,451 9,670 8,595  
Gross realized investments losses, excluding losses from other-than-temporary impairment            
Gross realized investment gains   144 91 286 179  
Gross realized investment losses   (121) (42) (148) (58)  
Net realized gains on sales of investments   23 $ 49 138 121  
Debt securities AFS            
Allowance for credit losses   13   13   8
Fair value   249,362   249,362   256,936
Transfer of investment securities from HTM to AFS, amortized cost $ 3,300     0 [1],[2],[3] $ 3,324 [1],[2],[3]  
Transfer of securities from HTM to AFS, unrealized gain $ 100          
Unallocated portfolio layer cumulative basis adjustments   (213)   (213)   93
Gross unrealized gains excluding the effect of unallocated portfolio cumulative basis adjustments   75   75    
Gross unrealized losses excluding the effect of unallocated portfolio cumulative basis adjustments   (1,000)   (1,000)    
Mortgage-backed securities            
Investments            
Debt securities available-for-sale (AFS)   32,359   32,359   30,139
Debt securities AFS            
Amortized cost   33,101   33,101   30,706
Gross unrealized gains   92   92   170
Gross unrealized losses   834   834   737
Allowance for credit losses   0   0   0
Fair value   32,359   32,359   30,139
U.S. government-sponsored agency guaranteed            
Investments            
Debt securities available-for-sale (AFS)   31,770   31,770   29,715
Debt securities AFS            
Amortized cost   32,510   32,510   30,279
Gross unrealized gains   92   92   170
Gross unrealized losses   832   832   734
Allowance for credit losses   0   0   0
Fair value   31,770   31,770   29,715
Residential            
Investments            
Debt securities available-for-sale (AFS)   588   588   423
Debt securities AFS            
Amortized cost   590   590   426
Gross unrealized gains   0   0   0
Gross unrealized losses   2   2   3
Allowance for credit losses   0   0   0
Fair value   588   588   423
Commercial Mortgage-Backed Securities            
Investments            
Debt securities available-for-sale (AFS)   1   1   1
Debt securities AFS            
Amortized cost   1   1   1
Gross unrealized gains   0   0   0
Gross unrealized losses   0   0   0
Allowance for credit losses   0   0   0
Fair value   1   1   1
U.S. Treasury            
Investments            
Debt securities available-for-sale (AFS)   69,632   69,632   80,361
Debt securities AFS            
Amortized cost   70,604   70,604   81,684
Gross unrealized gains   7   7   59
Gross unrealized losses   979   979   1,382
Allowance for credit losses   0   0   0
Fair value   69,632   69,632   80,361
U.S. Treasury and federal agency securities            
Investments            
Debt securities available-for-sale (AFS)   69,632   69,632   80,361
Debt securities AFS            
Amortized cost   70,604   70,604   81,684
Gross unrealized gains   7   7   59
Gross unrealized losses   979   979   1,382
Allowance for credit losses   0   0   0
Fair value   69,632   69,632   80,361
State and municipal            
Investments            
Debt securities available-for-sale (AFS)   1,889   1,889   2,131
Debt securities AFS            
Amortized cost   1,970   1,970   2,204
Gross unrealized gains   14   14   18
Gross unrealized losses   95   95   91
Allowance for credit losses   0   0   0
Fair value   1,889   1,889   2,131
Foreign government            
Investments            
Debt securities available-for-sale (AFS)   134,099   134,099   131,198
Debt securities AFS            
Amortized cost   135,144   135,144   132,045
Gross unrealized gains   309   309   528
Gross unrealized losses   1,354   1,354   1,375
Allowance for credit losses   0   0   0
Fair value   134,099   134,099   131,198
Corporate            
Investments            
Debt securities available-for-sale (AFS)   5,302   5,302   5,412
Debt securities AFS            
Amortized cost   5,471   5,471   5,610
Gross unrealized gains   20   20   18
Gross unrealized losses   176   176   208
Allowance for credit losses   13   13   8
Fair value   5,302   5,302   5,412
Asset-backed securities            
Investments            
Debt securities available-for-sale (AFS)   768   768   938
Debt securities AFS            
Amortized cost   755   755   921
Gross unrealized gains   13   13   17
Gross unrealized losses   0   0   0
Allowance for credit losses   0   0   0
Fair value   768   768   938
Other debt securities            
Investments            
Debt securities available-for-sale (AFS)   5,313   5,313   6,757
Debt securities AFS            
Amortized cost   5,315   5,315   6,754
Gross unrealized gains   2   2   4
Gross unrealized losses   4   4   1
Allowance for credit losses   0   0   0
Fair value   5,313   5,313   6,757
Debt securities AFS            
Investments            
Debt securities available-for-sale (AFS)   249,362   249,362   256,936
Debt securities AFS            
Amortized cost   252,360   252,360   259,924
Gross unrealized gains   457   457   814
Gross unrealized losses   3,442   3,442   3,794
Allowance for credit losses   13   13   8
Fair value   249,362   249,362   256,936
Unallocated portfolio layer cumulative basis adjustments   (200)   (200)    
Fair value | Non-marketable securities measured using measurement alternative            
Investments            
Non-marketable equity securities measured using the measurement alternative   26   26   25
Carried at cost | Non-marketable equity securities            
Investments            
Total investments   $ 5,400   $ 5,400   $ 5,500
[1] Operating and finance lease right-of-use assets and lease liabilities represent non-cash investing and financing activities, respectively, and are not included in the non-cash investing activities presented here. See Note 26 for more information and balances as of June 30, 2024.
[2] See Note 2.
[3] n January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer.