XML 117 R91.htm IDEA: XBRL DOCUMENT v3.24.3
INVESTMENTS - Overview (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Investments            
Debt securities available-for-sale (AFS)   $ 234,444   $ 234,444   $ 256,936
Debt securities held-to-maturity (HTM)   248,274   248,274   254,247
Marketable equity securities carried at fair value   207   207   258
Non-marketable equity securities carried at fair value   648   648   508
Non-marketable equity securities measured using the measurement alternative   1,762   1,762   1,639
Non-marketable equity securities carried at cost   5,336   5,336   5,497
Total investments   490,671   490,671   519,085
Accrued interest receivable   2,000   2,000   2,000
Interest and dividends on investments            
Taxable interest   4,513 $ 4,547 13,841 $ 12,831  
Interest exempt from U.S. federal income tax   78 83 239 252  
Dividend income   92 89 273 231  
Total interest and dividend income on investments   4,683 4,719 14,353 13,314  
Gross realized investments losses, excluding losses from other-than-temporary impairment            
Gross realized investment gains   108 83 394 262  
Gross realized investment losses   (36) (53) (184) (111)  
Net realized gains on sales of investments   72 $ 30 210 151  
Debt securities AFS            
Allowance for credit losses   8   8   8
Fair value   234,444   234,444   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   299   299   93
Gross unrealized gains excluding the effect of unallocated portfolio cumulative basis adjustments   400   400    
Gross unrealized losses excluding the effect of unallocated portfolio cumulative basis adjustments   (500)   (500)    
Mortgage-backed securities            
Investments            
Debt securities available-for-sale (AFS)   32,503   32,503   30,139
Debt securities AFS            
Amortized cost   32,873   32,873   30,706
Gross unrealized gains   211   211   170
Gross unrealized losses   581   581   737
Allowance for credit losses   0   0   0
Fair value   32,503   32,503   30,139
U.S. government-sponsored agency guaranteed            
Investments            
Debt securities available-for-sale (AFS)   31,877   31,877   29,715
Debt securities AFS            
Amortized cost   32,244   32,244   30,279
Gross unrealized gains   211   211   170
Gross unrealized losses   578   578   734
Allowance for credit losses   0   0   0
Fair value   31,877   31,877   29,715
Residential            
Investments            
Debt securities available-for-sale (AFS)   625   625   423
Debt securities AFS            
Amortized cost   628   628   426
Gross unrealized gains   0   0   0
Gross unrealized losses   3   3   3
Allowance for credit losses   0   0   0
Fair value   625   625   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)   59,544   59,544   80,361
Debt securities AFS            
Amortized cost   60,069   60,069   81,684
Gross unrealized gains   60   60   59
Gross unrealized losses   585   585   1,382
Allowance for credit losses   0   0   0
Fair value   59,544   59,544   80,361
U.S. Treasury and federal agency securities            
Investments            
Debt securities available-for-sale (AFS)   59,544   59,544   80,361
Debt securities AFS            
Amortized cost   60,069   60,069   81,684
Gross unrealized gains   60   60   59
Gross unrealized losses   585   585   1,382
Allowance for credit losses   0   0   0
Fair value   59,544   59,544   80,361
State and municipal            
Investments            
Debt securities available-for-sale (AFS)   1,887   1,887   2,131
Debt securities AFS            
Amortized cost   1,956   1,956   2,204
Gross unrealized gains   9   9   18
Gross unrealized losses   78   78   91
Allowance for credit losses   0   0   0
Fair value   1,887   1,887   2,131
Foreign government            
Investments            
Debt securities available-for-sale (AFS)   129,640   129,640   131,198
Debt securities AFS            
Amortized cost   129,843   129,843   132,045
Gross unrealized gains   629   629   528
Gross unrealized losses   832   832   1,375
Allowance for credit losses   0   0   0
Fair value   129,640   129,640   131,198
Corporate            
Investments            
Debt securities available-for-sale (AFS)   5,682   5,682   5,412
Debt securities AFS            
Amortized cost   5,789   5,789   5,610
Gross unrealized gains   32   32   18
Gross unrealized losses   131   131   208
Allowance for credit losses   8   8   8
Fair value   5,682   5,682   5,412
Asset-backed securities            
Investments            
Debt securities available-for-sale (AFS)   838   838   938
Debt securities AFS            
Amortized cost   823   823   921
Gross unrealized gains   15   15   17
Gross unrealized losses   0   0   0
Allowance for credit losses   0   0   0
Fair value   838   838   938
Other debt securities            
Investments            
Debt securities available-for-sale (AFS)   4,350   4,350   6,757
Debt securities AFS            
Amortized cost   4,350   4,350   6,754
Gross unrealized gains   2   2   4
Gross unrealized losses   2   2   1
Allowance for credit losses   0   0   0
Fair value   4,350   4,350   6,757
Debt securities AFS            
Investments            
Debt securities available-for-sale (AFS)   234,444   234,444   256,936
Debt securities AFS            
Amortized cost   235,703   235,703   259,924
Gross unrealized gains   958   958   814
Gross unrealized losses   2,209   2,209   3,794
Allowance for credit losses   8   8   8
Fair value   234,444   234,444   256,936
Unallocated portfolio layer cumulative basis adjustments   300   300    
Fair value | Non-marketable securities measured using measurement alternative            
Investments            
Non-marketable equity securities measured using the measurement alternative   $ 25   $ 25   $ 25
[1] In 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.
[2] 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 September 30, 2024.
[3] See Note 2.