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LOANS (Tables)
12 Months Ended
Dec. 31, 2021
Consumer  
Loans receivable  
Schedule of loan delinquency and non-accrual details
Consumer Loans, Delinquencies and Non-Accrual Status at December 31, 2021

In millions of dollars
Total
current(1)(2)
30–89 
days past 
due(3)(4)
≥ 90 days
past 
due(3)(4)
Past due
government
guaranteed(5)
Total
loans
Non-accrual loans for which there is no ACLLNon-accrual loans for which there is an ACLLTotal
non-accrual
90 days 
past due and accruing
In North America offices(6)
      
Residential first mortgages(7)
$82,234 $454 $279 $394 $83,361 $134 $558 $692 $282 
Home equity loans(8)(9)
5,546 43 156  5,745 64 221 285  
Credit cards132,050 947 871  133,868    871 
Personal, small business and other39,977 534 164 38 40,713 2 71 73 30 
Total$259,807 $1,978 $1,470 $432 $263,687 $200 $850 $1,050 $1,183 
In offices outside North America(6)
      
Residential mortgages(7)
$37,566 $165 $158 $ $37,889 $ $409 $409 $10 
Credit cards17,428 192 188  17,808  140 140 120 
Personal, small business and other56,930 145 75  57,150  227 227 22 
Total$111,924 $502 $421 $ $112,847 $ $776 $776 $152 
Total Citigroup(10)
$371,731 $2,480 $1,891 $432 $376,534 $200 $1,626 $1,826 $1,335 

Consumer Loans, Delinquencies and Non-Accrual Status at December 31, 2020

In millions of dollars
Total
current(1)(2)
30–89
 days past
 due(3)(4)
≥ 90 days
past
 due(3)(4)
Past due
government
guaranteed(5)
Total
loans
Non-accrual loans for which there is no ACLLNon-accrual loans for which there is an ACLLTotal
non-accrual
90 days 
past due and accruing
In North America offices(6)
       
Residential first mortgages(7)
$82,497 $554 $381 $524 $83,956 $136 $698 $834 $351 
Home equity loans(8)(9)
7,591 78 221 — 7,890 72 338 410 — 
Credit cards127,827 1,228 1,330 — 130,385 — — — 1,330 
Personal, small business and other38,535 595 129 — 39,259 255 257 
Total$256,450 $2,455 $2,061 $524 $261,490 $210 $1,291 $1,501 $1,682 
In offices outside North America(6)
      
Residential mortgages(7)
$42,405 $213 $199 $— $42,817 $— $488 $488 $— 
Credit cards21,718 429 545 — 22,692 — 386 386 324 
Personal, small business and other59,028 319 128 — 59,475 — 247 247 52 
Total$123,151 $961 $872 $— $124,984 $— $1,121 $1,121 $376 
Total Citigroup(10)
$379,601 $3,416 $2,933 $524 $386,474 $210 $2,412 $2,622 $2,058 

(1)Loans less than 30 days past due are presented as current.
(2)Includes $12 million and $14 million at December 31, 2021 and 2020, respectively, of residential first mortgages recorded at fair value.
(3)Excludes loans guaranteed by U.S. government-sponsored agencies. Excludes classifiably managed Private bank loans.
(4)Loans modified under Citi’s consumer relief programs continue to be reported in the same delinquency bucket they were in at the time of modification. Most modified loans in North America would not be reported as 30–89 or 90+ days past due for the duration of the programs (which have various durations, and certain of which may be renewed by the customer). Consumer relief programs in Asia and Mexico largely expired during the fourth quarter of 2020 and began to age at that time.
(5)Consists of loans that are guaranteed by U.S. government-sponsored agencies that are 30–89 days past due of $0.1 billion and $0.2 billion and 90 days or more past due of $0.3 billion and $0.3 billion at December 31, 2021 and 2020, respectively.
(6)North America includes the U.S., Canada and Puerto Rico. Mexico is included in offices outside North America.
(7)Includes approximately $0.1 billion and $0.1 billion at December 31, 2021 and 2020, respectively, of residential first mortgage loans in process of foreclosure in North America and outside of North America, respectively.
(8)Includes approximately $0.1 billion and $0.1 billion at December 31, 2021 and 2020, respectively, of home equity loans in process of foreclosure in North America and outside of North America, respectively.
(9)Fixed-rate home equity loans and loans extended under home equity lines of credit, which are typically in junior lien positions.
(10)Consumer loans are net of unearned income of $629 million and $692 million at December 31, 2021 and 2020, respectively. Unearned income on consumer loans primarily represents unamortized origination fees and costs, premiums and discounts.
Interest Income Recognized for Non-Accrual Consumer Loans
For the years ended
In millions of dollarsDecember 31, 2021December 31, 2020
In North America offices(1)
Residential first mortgages$13 $14 
Home equity loans7 
Credit cards — 
Personal, small business and other — 
Total$20 $22 
In offices outside North America(1)
Residential mortgages$1 $
Credit cards — 
Personal, small business and other — 
Total$1 $
Total Citigroup$21 $23 

(1)North America includes the U.S., Canada and Puerto Rico. Mexico is included in offices outside North America.
Schedule of loans credit quality indicators
The following tables provide details on the FICO scores for Citi’s U.S. consumer loan portfolio based on end-of-period receivables by year of origination. FICO scores are updated monthly for substantially all of the portfolio or, otherwise, on a quarterly basis for the remaining portfolio.

FICO score distribution in U.S. portfolio(1)(2)
December 31, 2021
In millions of dollarsLess than
680
680
to 760
Greater
than 760
FICO not availableTotal loans
Residential first mortgages
2021$626 $6,729 $12,349 
20205085,10212,153
20193733,0746,167
20183941,1802,216
20173431,4552,568
Prior2,0536,54012,586
Total residential first mortgages$4,297 $24,080 $48,039 $6,945 $83,361 
Home equity loans (pre-reset)
$263 $1,030 $1,539 
Home equity loans (post-reset)639 1,047 1,160 
Total home equity loans$902 $2,077 $2,699 $67 $5,745 
Credit cards(3)
$23,115 $52,907 $55,137 $2,192 $133,351 
Personal, small business and other
2021$59 $201 $319 
202022 41 64 
201942 53 68 
201834 35 37 
20177 8 9 
Prior120 179 143 
Total personal, small business and other(4)
$284 $517 $640 $38,365 $39,806 
Total$28,598 $79,581 $106,515 $47,569 $262,263 
FICO score distribution in U.S. portfolio(1)(2)
December 31, 2020
In millions of dollarsLess than
680
680
to 760
Greater
than 760
FICO not availableTotal
loans
Residential first mortgages
2020$604 $6,536 $14,332 
20194574,0309,241
20184231,6253,070
20174381,7973,780
20165512,4746,093
Prior2,3396,48413,354
Total residential first mortgages$4,812 $22,946 $49,870 $6,328 $83,956 
Home equity loans (pre-reset)$343 $1,217 $1,958 
Home equity loans (post-reset)1,094 1,640 1,614 
Total home equity loans$1,437 $2,857 $3,572 $24 $7,890 
Credit cards(3)
$26,227 $52,778 $49,767 $1,041 $129,813 
Personal, small business and other
2020$23 $58 $95 
201979 106 134 
201882 80 84 
201726 27 30 
201610 
Prior214 393 529 
Total personal, small business and other(4)
$434 $673 $880 $36,413 $38,400 
Total$32,910 $79,254 $104,089 $43,806 $260,059 

(1)The FICO bands in the tables are consistent with general industry peer presentations.
(2)FICO scores are updated on either a monthly or quarterly basis. For updates that are made only quarterly, certain current-period loans by year of origination are greater than those disclosed in the prior periods. Loans that did not have FICO scores as of the prior period have been updated with FICO scores as they become available.
(3)Excludes $517 million and $572 million of balances related to Canada for December 31, 2021 and December 31, 2020, respectively.
(4)Excludes $907 million and $859 million of balances related to Canada for December 31, 2021 and December 31, 2020, respectively.
The following tables provide details on the LTV ratios for Citi’s U.S. consumer mortgage portfolios by year of origination. LTV ratios are updated monthly using the most recent Core Logic Home Price Index data available for substantially all of the portfolio applied at the Metropolitan Statistical Area level, if available, or the state level if not. The remainder of the portfolio is updated in a similar manner using the Federal Housing Finance Agency indices.

LTV distribution in U.S. portfolioDecember 31, 2021
In millions of dollarsLess than
 or equal
to 80%
> 80% but less
than or equal to 100%
Greater
than
100%
LTV not availableTotal
Residential first mortgages
2021$18,107 $2,723 $34 
202018,715 446  
201910,047 269 29 
20184,117 136 11 
20174,804 103 4 
Prior22,161 128 14 
Total residential first mortgages$77,951 $3,805 $92 $1,513 $83,361 
Home equity loans (pre-reset)$2,637 $46 $69 
Home equity loans (post-reset)2,751 52 32 
Total home equity loans$5,388 $98 $101 $158 $5,745 
Total$83,339 $3,903 $193 $1,671 $89,106 
LTV distribution in U.S. portfolioDecember 31, 2020
In millions of dollarsLess than
 or equal
to 80%
> 80% but less
than or equal
to 100%
Greater
than
100%
LTV not availableTotal
Residential first mortgages
2020$18,671 $4,054 $— 
201912,674 1,836 35 
20184,810 832 18 
20176,127 489 12 
20169,409 223 27 
Prior22,807 152 23 
Total residential first mortgages$74,498 $7,586 $115 $1,757 $83,956 
Home equity loans (pre-reset)$3,283 $99 $76 
Home equity loans (post-reset)3,970 296 65 
Total home equity loans$7,253 $395 $141 $101 $7,890 
Total$81,751 $7,981 $256 $1,858 $91,846 
Schedule of impaired loans The following tables present information about impaired consumer loans and interest income recognized on impaired consumer loans:
At and for the year ended December 31, 2021
In millions of dollars
Recorded
investment(1)(2)
Unpaid
principal balance
Related
specific allowance(3)(4)
Average
carrying value(5)
Interest income
recognized(6)
Mortgage and real estate   
Residential first mortgages$1,521 $1,595 $87 $1,564 $88 
Home equity loans191 344 (1)336 9 
Credit cards1,582 1,609 594 1,795 116 
Personal, small business and other454 461 133 505 52 
Total$3,748 $4,009 $813 $4,200 $265 
 At and for the year ended December 31, 2020
In millions of dollars
Recorded
investment
(1)(2)
Unpaid
principal
balance
Related
specific allowance(3)
Average
carrying 
value(5)
Interest income
recognized(6)
Mortgage and real estate    
Residential first mortgages$1,858 $2,033 $157 $1,682 $101 
Home equity loans479 652 60 527 13 
Credit cards1,982 2,135 918 1,926 106 
Personal, small business and other549 549 246 460 31 
Total$4,868 $5,369 $1,381 $4,595 $251 

(1)Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount and direct write-downs and includes accrued interest only on credit card loans.
(2)For December 31, 2021, $190 million of residential first mortgages and $94 million of home equity loans do not have a specific allowance. For December 31, 2020, $211 million of residential first mortgages and $147 million of home equity loans do not have a specific allowance.
(3)Included in the Allowance for credit losses on loans.
(4)The negative allowance on home equity loans resulted from expected recoveries on previously written-off accounts.
(5)Average carrying value represents the average recorded investment ending balance for the last four quarters and does not include the related specific allowance.
(6)    Includes amounts recognized on both an accrual and cash basis.
Schedule of troubled debt restructurings
 
For the year ended December 31, 2021(1)
In millions of dollars, except number of loans modifiedNumber of
loans modified
Post-
modification
recorded
investment(2)(3)
Deferred
principal(4)
Contingent
principal
forgiveness(5)
Principal
forgiveness(6)
Average
interest rate
reduction
North America      
Residential first mortgages1,335 $230 $ $ $ 1 %
Home equity loans191 19     
Credit cards165,098 794    18 
Personal, small business and other1,000 13    3 
Total(7)
167,624 $1,056 $ $ $ 
International      
Residential mortgages1,975 $86 $ $ $  %
Credit cards74,202 339   13 13 
Personal, small business and other28,208 202   7 10 
Total(7)
104,385 $627 $ $ $20  
 
For the year ended December 31, 2020(1)
In millions of dollars, except number of loans modifiedNumber of
loans modified
Post-
modification
recorded
investment(2)(8)
Deferred
principal(4)
Contingent
principal
forgiveness(5)
Principal
forgiveness(6)
Average
interest rate
reduction
North America      
Residential first mortgages1,237 $225 $— $— $— — %
Home equity loans302 31 — — — 
Credit cards215,466 1,038 — — — 17 
Personal, small business and other2,452 28 — — — 
Total(7)
219,457 $1,322 $— $— $— 
International      
Residential mortgages2,544 $145 $$— $— %
Credit cards90,694 401 — — 12 15 
Personal, small business and other41,079 301 — — 
Total(7)
134,317 $847 $$— $20 

(1)The above tables do not include loan modifications that meet the TDR relief criteria in the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) or the interagency guidance.
(2)Post-modification balances include past-due amounts that are capitalized at the modification date.
(3)Post-modification balances in North America include $15 million of residential first mortgages to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2021. These amounts include $5 million of residential first mortgages that were newly classified as TDRs during 2021, based on previously received OCC guidance.
(4)Represents the portion of contractual loan principal that is non-interest bearing, but still due from the borrower. Such deferred principal is charged off at the time of permanent modification to the extent that the related loan balance exceeds the underlying collateral value.
(5)Represents the portion of contractual loan principal that is non-interest bearing and, depending upon borrower performance, eligible for forgiveness.
(6)Represents the portion of contractual loan principal that was forgiven at the time of permanent modification.
(7)    The above tables reflect activity for restructured loans that were considered TDRs during the year.
(8)    Post-modification balances in North America include $13 million of residential first mortgages to borrowers who have gone through Chapter 7 bankruptcy in the year ended December 31, 2020. These amounts include $9 million of residential first mortgages that were newly classified as TDRs during 2020, based on previously received OCC guidance.
Schedule of troubled debt restructuring loans that defaulted
The following table presents consumer TDRs that defaulted for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due:
Years ended December 31,
In millions of dollars20212020
North America  
Residential first mortgages$57 $71 
Home equity loans8 14 
Credit cards252 317 
Personal, small business and other4 
Total$321 $406 
International  
Residential mortgages$38 $26 
Credit cards152 178 
Personal, small business and other96 78 
Total$286 $282 

Purchased Credit-Deteriorated Assets

Years ended December 31,
 20212020
In millions of dollarsCredit
cards
Mortgages(1)
Installment and otherCredit
cards
Mortgages(1)
Installment and other
Purchase price $ $23 $ $$49 $— 
Allowance for credit losses at acquisition date   — — 
Discount or premium attributable to non-credit factors   — — — 
Par value (amortized cost basis)$ $23 $ $$49 $— 


(1)    Includes loans sold to agencies that were bought back at par due to repurchase agreements.
Corporate  
Loans receivable  
Schedule of loans The following table presents information by corporate loan type:
In millions of dollarsDecember 31,
2021
December 31,
2020
In North America offices(1)
  
Commercial and industrial$48,364 $53,930 
Financial institutions49,804 39,390 
Mortgage and real estate(2)
15,965 16,522 
Installment and other20,143 17,362 
Lease financing415 673 
Total$134,691 $127,877 
In offices outside North America(1)
  
Commercial and industrial$102,735 $103,234 
Financial institutions22,158 25,111 
Mortgage and real estate(2)
4,374 5,277 
Installment and other22,812 24,034 
Lease financing40 65 
Governments and official institutions4,423 3,811 
Total$156,542 $161,532 
Corporate loans, net of unearned income(3)
$291,233 $289,409 

(1)North America includes the U.S., Canada and Puerto Rico. Mexico is included in offices outside North America. The classification between offices in North America and outside North America is based on the domicile of the booking unit. The difference between the domicile of the booking unit and the domicile of the managing unit is not material.
(2)Loans secured primarily by real estate.
(3)Corporate loans are net of unearned income of ($770) million and ($787) million at December 31, 2021 and 2020, respectively. Unearned income on corporate loans primarily represents interest received in advance, but not yet earned, on loans originated on a discounted basis.
Schedule of loan delinquency and non-accrual details
Corporate Loan Delinquencies and Non-Accrual Details at December 31, 2021

In millions of dollars
30–89 days
past due
and accruing(1)
≥ 90 days
past due and
accruing(1)
Total past due
and accruing
Total
non-accrual(2)
Total
current(3)
Total
loans(4)
Commercial and industrial$1,072 $239 $1,311 $1,263 $144,430 $147,004 
Financial institutions320 166 486 2 71,279 71,767 
Mortgage and real estate1 1 2 136 20,153 20,291 
Lease financing   14 441 455 
Other77 19 96 138 45,412 45,646 
Loans at fair value6,070 
Total$1,470 $425 $1,895 $1,553 $281,715 $291,233 

Corporate Loan Delinquencies and Non-Accrual Details at December 31, 2020

In millions of dollars
30–89 days
past due
and accruing(1)
≥ 90 days
past due and
accruing(1)
Total past due
and accruing
Total
non-accrual(2)
Total
current(3)
Total
loans(4)
Commercial and industrial$362 $109 $471 $2,784 $148,445 $151,700 
Financial institutions463 38 501 33 63,517 64,051 
Mortgage and real estate59 154 213 105 21,425 21,743 
Lease financing62 12 74 24 640 738 
Other34 17 51 100 44,186 44,337 
Loans at fair value6,840 
Total$980 $330 $1,310 $3,046 $278,213 $289,409 

(1)Corporate loans that are 90 days past due are generally classified as non-accrual. Corporate loans are considered past due when principal or interest is contractually due but unpaid.
(2)Non-accrual loans generally include those loans that are 90 days or more past due or those loans for which Citi believes, based on actual experience and a forward-looking assessment of the collectability of the loan in full, that the payment of interest or principal is doubtful.
(3)Loans less than 30 days past due are presented as current.
(4)Total loans include loans at fair value, which are not included in the various delinquency columns.
Schedule of loans credit quality indicators
Corporate Loans Credit Quality Indicators

 
Recorded investment in loans(1)
Term loans by year of origination
Revolving line
of credit arrangements(2)
December 31,
2021
In millions of dollars20212020201920182017Prior
Investment grade(3)
 
Commercial and industrial(4)
$42,422 $5,529 $4,642 $3,757 $2,911 $8,392 $30,588 $98,241 
Financial institutions(4)
12,862 1,678 1,183 1,038 419 1,354 43,630 62,164 
Mortgage and real estate2,423 3,660 3,332 2,015 1,212 1,288 141 14,071 
Other(5)
9,037 3,099 1,160 2,789 330 4,601 18,727 39,743 
Total investment grade$66,744 $13,966 $10,317 $9,599 $4,872 $15,635 $93,086 $214,219 
Non-investment grade(3)
 
Accrual 
Commercial and industrial(4)
$16,783 $2,281 $2,343 $2,024 $1,412 $3,981 $18,676 $47,500 
Financial institutions(4)
4,325 347 567 101 71 511 3,679 9,601 
Mortgage and real estate1,275 869 1,228 1,018 493 586 615 6,084 
Other(5)
1,339 349 554 364 119 245 3,236 6,206 
Non-accrual
Commercial and industrial(4)
53 119 64 104 94 117 712 1,263 
Financial institutions      2 2 
Mortgage and real estate11 8 2 49 10 25 31 136 
Other(5)
19 5 19 19  90  152 
Total non-investment grade$23,805 $3,978 $4,777 $3,679 $2,199 $5,555 $26,951 $70,944 
Loans at fair value(6)
6,070 
Corporate loans, net of unearned income$90,549 $17,944 $15,094 $13,278 $7,071 $21,190 $120,037 $291,233 
 
Recorded investment in loans(1)
Term loans by year of origination
Revolving line
of credit arrangements(2)
December 31, 2020
In millions of dollars20202019201820172016Prior
Investment grade(3)
 
Commercial and industrial(4)
$37,685 $7,342 $5,713 $3,663 $1,929 $8,395 $23,457 $88,184 
Financial institutions(4)
9,039 2,722 1,828 694 356 1,709 36,119 52,467 
Mortgage and real estate3,633 4,187 3,591 1,599 648 943 90 14,691 
Other(5)
8,000 2,165 4,274 667 577 4,255 19,757 39,695 
Total investment grade$58,357 $16,416 $15,406 $6,623 $3,510 $15,302 $79,423 $195,037 
Non-investment grade(3)
 
Accrual 
Commercial and industrial(4)
$19,566 $4,769 $4,584 $2,883 $1,151 $4,540 $23,239 $60,732 
Financial institutions(4)
7,149 611 625 231 126 193 2,616 11,551 
Mortgage and real estate1,135 1,352 1,550 1,192 553 653 512 6,947 
Other(5)
1,064 796 602 333 138 567 1,756 5,256 
Non-accrual
Commercial and industrial(4)
260 194 191 143 57 223 1,716 2,784 
Financial institutions— — — — — — 33 33 
Mortgage and real estate18 30 36 105 
Other(5)
14 12 29 62 124 
Total non-investment grade$29,197 $7,726 $7,567 $4,829 $2,035 $6,268 $29,910 $87,532 
Loans at fair value(6)
6,840 
Corporate loans, net of unearned income$87,554 $24,142 $22,973 $11,452 $5,545 $21,570 $109,333 $289,409 

(1)Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
(2)There were no significant revolving line of credit arrangements that converted to term loans during the year.
(3)Held-for-investment loans are accounted for on an amortized cost basis.
(4)Includes certain short-term loans with less than one year in tenor.
(5)Other includes installment and other, lease financing and loans to government and official institutions.
(6)Loans at fair value include loans to commercial and industrial, financial institutions, mortgage and real estate and other.
Schedule of impaired loans
The following tables present non-accrual loan information by corporate loan type and interest income recognized on non-accrual corporate loans:

At and for the year ended December 31, 2021
In millions of dollars
Recorded
investment(1)
Unpaid
principal balance
Related specific
allowance
Average
carrying value(2)
Interest income recognized(3)
Non-accrual corporate loans    
Commercial and industrial$1,263 $1,858 $198 $1,839 $37 
Financial institutions2 55  4  
Mortgage and real estate136 285 10 163  
Lease financing14 14  21  
Other138 165 4 134 17 
Total non-accrual corporate loans$1,553 $2,377 $212 $2,161 $54 
At and for the year ended December 31, 2020
In millions of dollars
Recorded
investment(1)
Unpaid
principal balance
Related specific
allowance
Average
carrying value(2)
Interest income recognized(3)
Non-accrual corporate loans    
Commercial and industrial$2,784 $3,649 $438 $2,635 $36 
Financial institutions33 122 13 29 — 
Mortgage and real estate105 319 15 92 — 
Lease financing24 24 — 35 — 
Other100 224 12 176 15 
Total non-accrual corporate loans$3,046 $4,338 $478 $2,967 $51 
 December 31, 2021December 31, 2020
In millions of dollars
Recorded
investment(1)
Related specific
allowance
Recorded
investment(1)
Related specific
allowance
Non-accrual corporate loans with specific allowances    
Commercial and industrial$637 $198 $1,514 $438 
Financial institutions  31 13 
Mortgage and real estate29 10 37 15 
Other37 4 67 12 
Total non-accrual corporate loans with specific allowances$703 $212 $1,649 $478 
Non-accrual corporate loans without specific allowances    
Commercial and industrial$626 $1,270  
Financial institutions2  
Mortgage and real estate107 68  
Lease financing14 24  
Other101 33  
Total non-accrual corporate loans without specific allowances$850 N/A$1,397 N/A

(1)Recorded investment in a loan includes net deferred loan fees and costs, unamortized premium or discount, less any direct write-downs.
(2)Average carrying value represents the average recorded investment balance and does not include related specific allowances.
(3)Interest income recognized for the year ended December 31, 2019 was $42 million.
N/A Not applicable
Schedule of troubled debt restructurings
Corporate Troubled Debt Restructurings(1)

For the year ended December 31, 2021

In millions of dollarsCarrying value of TDRs modified
during the year
TDRs
involving changes
in the amount
and/or timing of
principal payments(2)
TDRs
involving changes
in the amount
and/or timing of
interest payments(3)
TDRs
involving changes
in the amount
and/or timing of
both principal and
interest payments
Commercial and industrial$82 $ $ $82 
Mortgage and real estate4   4 
Other6  6 
Total$92 $ $ $92 

For the year ended December 31, 2020

In millions of dollarsCarrying value of TDRs modified during the year
TDRs
involving changes
in the amount
and/or timing of
principal payments(2)
TDRs
involving changes
in the amount
and/or timing of
interest payments(3)
TDRs
involving changes
in the amount
and/or timing of
both principal and
interest payments
Commercial and industrial$249 $— $— $249 
Mortgage and real estate— — 
Other13 — — 13 
Total$265 $— $— $265 

(1)The above tables do not include loan modifications that meet the TDR relief criteria in the CARES Act or the interagency guidance.
(2)TDRs involving changes in the amount or timing of principal payments may involve principal forgiveness or deferral of periodic and/or final principal payments. Because forgiveness of principal is rare for corporate loans, modifications typically have little to no impact on the loans’ projected cash flows and thus little to no impact on the allowance established for the loans. Charge-offs for amounts deemed uncollectible may be recorded at the time of the restructuring or may have already been recorded in prior periods such that no charge-off is required at the time of the modification.
(3)TDRs involving changes in the amount or timing of interest payments may involve a below-market interest rate.
Schedule of troubled debt restructuring loans that defaulted
The following table presents total corporate loans modified in a TDR as well as those TDRs that defaulted and for which the payment default occurred within one year of a permanent modification. Default is defined as 60 days past due, except for classifiably managed commercial banking loans, where default is defined as 90 days past due.

In millions of dollarsTDR balances at December 31, 2021TDR loans that re-defaulted in 2021 within one year of modificationTDR balances at
December 31, 2020
TDR loans that re-defaulted in 2020 within one year of modification
Commercial and industrial$236 $ $325 $— 
Mortgage and real estate20  29 — 
Other28  27 — 
Total(1)
$284 $ $381 $— 

(1)The above table reflects activity for loans outstanding that were considered TDRs as of the end of the reporting period.