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Post-employment benefits (Tables)
 12 Months Ended
Dec. 31, 2021
Text Block [Abstract]  
Summary of Main Assumptions Used in Actuarial Valuation of Retirement Plans
The most relevant demographic assumption comprise of mortality table and the most relevant financial assumptions include: discount rate and inflation.
 
    
12/31/2021
   
12/31/2020
Mortality table
(1)
  
AT-2000
   
AT-2000
Discount rate
(2)
   9.46% p.a.    7.64% p.a.
Inflation
(3)
   4.00% p.a.    4.00% p.a.
Actuarial method    Projected Unit Credit    Projected Unit Credit
    
 
   
 
 
(1)
Correspond to those disclosed by SOA – “Society of Actuaries”, that reflect a 10% increase in the probabilities of survival regarding the respective basic tables.
(2)
Determined based on market yield relating to National Treasury Notes
(NTN-B)
and compatible with the economic scenario observed on the balance sheet closing date, considering the volatility of interest market and models used.
(3)
Refers to estimated long-term projection.
Retired plans sponsored by foreign subsidiaries - Banco Itaú (Suisse) S.A., Itaú CorpBanca Colombia S.A. and PROSERV - Promociones y Servicios S.A. de C.V. - are structured as Defined Benefit modality and adopt actual assumptions adequate to masses of participants and the economic scenario of each country.
Summary of Allocation of Assets by Category Segmented into Quoted and Not Quoted in Active Market
Below is a table with the allocation of assets by category, segmented into Quoted in an Active Market and Not Quoted in an Active Market:
 
    
Fair value
     
% Allocation
  
Types
   
12/31/2021
     
12/31/2020
     
12/31/2021
    
12/31/2020
  
Fixed income securities
   
 
19,904
 
   
 
21,172
 
   
 
90.8
% 
  
 
91.2
% 
Quoted in an active market
      19,508        20,804        89.0 %      89.6 % 
Non quoted in an active market
      396        368        1.8 %      1.6 % 
Variable income securities
   
 
1,323
 
   
 
1,387
 
   
 
6.1
% 
  
 
5.9
% 
Quoted in an active market
      1,312        1,378        6.0 %      5.9 % 
Non quoted in an active market
      11        9        0.1 %      0.0 % 
Structured investments
   
 
150
 
   
 
82
 
   
 
0.7
% 
  
 
0.4
% 
Non quoted in an active market
      150        82        0.7 %      0.4 % 
Real estate
   
 
462
 
   
 
506
 
   
 
2.1
% 
  
 
2.2
% 
Loans to participants
   
 
73
 
   
 
78
 
   
 
0.3
% 
  
 
0.3
% 
    
 
 
     
 
 
     
 
 
    
 
 
  
Total
   
 
21,912
 
   
 
23,225
 
   
 
100.0%
 
  
 
100.0%
 
    
 
 
     
 
 
     
 
 
    
 
 
  
Summary of Change in Net Amount Recognized in Balance Sheet
e) Change in the net amount recognized in the balance sheet
The net amount recognized in the Balance Sheet is limited by the asset ceiling and it is computed based on estimated future contributions to be realized by the sponsor, so that it represents the maximum reduction amount in the contributions to be made.
 
   
12/31/2021
  
   
BD and CV plans
    
CD plans
    
Other post-
employment
benefits

Liabilities
    
Total

Recognized
amount
  
   
Net assets
    
Actuarial
liabilities
    
Asset ceiling
    
Recognized
amount
    
Pension plan
fund
    
Asset
ceiling
    
Recognized
amount
  
Amounts at the beginning of the
period
  
 
23,225
 
  
 
(20,662
) 
  
 
(3,642
) 
  
 
(1,079
) 
  
 
1,454
 
  
 
(951
) 
  
 
503
 
  
 
(922
) 
  
 
(1,498
) 
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amounts recognized in income
(1+2+3+4)
  
 
1,722
 
  
 
(1,575
) 
  
 
(278
) 
  
 
(131
) 
  
 
41
 
  
 
(68
) 
  
 
(27
) 
  
 
(66
) 
  
 
(224
) 
1 - Cost of current service
     —         (53 )      —         (53 )      —         —         —         —         (53 ) 
2 - Cost of past service
     —         —         —         —         —         —         —         —         —    
3 - Net interest
(1)
    1,722       (1,522 )      (278 )      (78 )      104       (68 )      36       (66 )      (108 ) 
4 - Other expenses
(2)
    —         —         —         —         (63 )      —         (63 )      —         (63 ) 
Amounts recognized in
stockholders´ equity - other comprehensive income (5+6+7)
  
 
(1,764
) 
  
 
817
 
  
 
665
 
  
 
(282
) 
  
 
(725
) 
  
 
1,017
 
  
 
292
 
  
 
81
 
  
 
91
 
5 - Effects on asset ceiling
(4)
    —         —         665       665       (484 )      1,017       533       —         1,198  
6 - Remeasurements
     (1,766 )      801       —         (965 )      (241 )      —         (241 )      81       (1,125 ) 
Changes in demographic assumptions
     —         4       —         4       —         —         —         —         4  
Changes in financial
assumptions
     —         3,708       —         3,708       —         —         —         113       3,821  
Experience of the plan
(3)
    (1,766 )      (2,911 )      —         (4,677 )      (241 )      —         (241 )      (32 )      (4,950 ) 
7 - Exchange variation
     2       16       —         18       —         —         —         —         18  
Other (8+9+10)
  
 
(1,271
) 
  
 
1,381
 
  
 
—  
 
  
 
110
 
  
 
(323
) 
  
 
—  
 
  
 
(323
) 
  
 
128
 
  
 
(85
) 
8 - Receipt by Destination of
Resources
(4)
    —         —         —         —         (323 )      —         (323 )      —         (323 ) 
9 - Benefits paid
     (1,381 )      1,381       —         —         —         —         —         128       128  
10 - Contributions and investments
from sponsor
     110       —         —         110       —         —         —         —         110  
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amounts at end of the period
  
 
21,912
 
  
 
(20,039
) 
  
 
(3,255
) 
  
 
(1,382
) 
  
 
447
 
  
 
(2
) 
  
 
445
 
  
 
(779
) 
  
 
(1,716
) 
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amount recognized in Assets (Note
18a)
                             48                       445       —         493  
Amount recognized in Liabilities
(Note 18b)
                             (1,430 )                      —         (779 )      (2,209 ) 
                           
 
 
                    
 
 
    
 
 
    
 
 
  
 
   
12/31/2020
  
   
BD and CV plans
    
CD plans
    
Other post-
employment
benefits

Liabilities
    
Total

Recognized
amount
  
   
Net assets
    
Actuarial
liabilities
    
Asset ceiling
    
Recognized
amount
    
Pension plan
fund
    
Asset
ceiling
    
Recognized
amount
  
Amounts at the beginning of the
period
  
 
22,732
 
  
 
(19,659
) 
  
 
(3,761
) 
  
 
(688
) 
  
 
1,475
 
  
 
(849
) 
  
 
626
 
  
 
(967
) 
  
 
(1,029
) 
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amounts recognized in income (1+2+3+4)
  
 
1,731
 
  
 
(1,578
) 
  
 
(287
) 
  
 
(134
) 
  
 
20
 
  
 
(65
) 
  
 
(45
) 
  
 
(76
) 
  
 
(255
) 
1 - Cost of current service
     —         (80 )      —         (80 )      —         —         —         —         (80 ) 
2 - Cost of past service
     —         (1 )      —         (1 )      —         —         —         —         (1 ) 
3 - Net interest
(1)
    1,731       (1,497 )      (287 )      (53 )      112       (65 )      47       (76 )      (82 ) 
4 - Other expenses
(2)
    —         —         —         —         (92 )      —         (92 )      —         (92 ) 
Amounts recognized in
stockholders´ equity - other comprehensive income (5+6+7)
  
 
(75
) 
  
 
(669
) 
  
 
406
 
  
 
(338
) 
  
 
(41
) 
  
 
(37
) 
  
 
(78
) 
  
 
6
 
  
 
(410
) 
5 - Effects on asset ceiling
     —         —         406       406       —         (37 )      (37 )      —         369  
6 - Remeasurements
     (113 )      (588 )      —         (701 )      (41 )      —         (41 )      6       (736 ) 
Changes in demographic assumptions
     —         (11 )      —         (11 )      —         —         —         —         (11 ) 
Changes in financial assumptions
     —         13       —         13       —         —         —         12       25  
Experience of the plan
(3)
    (113 )      (590 )      —         (703 )      (41 )      —         (41 )      (6 )      (750 ) 
7 - Exchange variation
     38       (81 )      —         (43 )      —         —         —         —         (43 ) 
Other (8+9)
  
 
(1,163
) 
  
 
1,244
 
  
 
—  
 
  
 
81
 
  
 
—  
 
  
 
—  
 
  
 
—  
 
  
 
115
 
  
 
196
 
8 - Benefits paid
     (1,244 )      1,244       —         —         —         —         —         115       115  
9 - Contributions and investments from sponsor
     81       —         —         81       —         —         —         —         81  
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amounts at end of the period
  
 
23,225
 
  
 
(20,662
) 
  
 
(3,642
) 
  
 
(1,079
) 
  
 
1,454
 
  
 
(951
) 
  
 
503
 
  
 
(922
) 
  
 
(1,498
) 
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Amount recognized in Assets (Note
18a)
                             82                       503       —         585  
Amount recognized in Liabilities
(Note 18b)
                             (1,161 )                      —         (922 )      (2,083 ) 
                           
 
 
                    
 
 
    
 
 
    
 
 
  
 
(1)
Corresponds to the amount calculated on 01/01/2021 based on the initial amount (Net Assets, Actuarial Liabilities and Restriction of Assets), taking into account the estimated amount of payments/ receipts of benefits/ contributions, multiplied by the discount rate of 7.64% p.a. (on 01/01/2020 the rate used was 7.64% p.a.).
(2)
Corresponds to the use of asset amounts allocated in pension funds of the defined contribution plans.
(3)
Correspond to the income obtained above/below the expected return and comprise the contributions made by participants.
(4)
Includes the effects of the allocation of the surplus from the pension fund of Itaubanco Defined Contribution Plan.
Summary of Defined Benefit Contribution
f) Defined benefit contribution
 
    
Estimated
contribution
     
Contributions made
  
    
2022
     
01/01 to
12/31/2021
     
01/01 to
12/31/2020
  
Retirement plan - FIU
      34        43        45  
Retiremente plan - FUNBEP
      22        32        5  
    
 
 
     
 
 
     
 
 
  
Total
   
 
56
 
   
 
75
 
   
 
50
 
    
 
 
     
 
 
     
 
 
  
Summary of Maturity Profile of Defined Benefit Liabilities
g) Maturity profile of defined benefit liabilities
 
    
Duration 
(*)
     
2022
     
2023
     
2024
     
2025
     
2026
     
2027 to 2031
  
Pension plan - FIU
      9.80        1,050        943        984        1,025        1,072        5,862  
Pension plan - FUNBEP
      9.10        594        614        634        652        667        3,541  
Other post-employment benefits
      7.09        140        157        149        36        37        209  
             
 
 
     
 
 
     
 
 
     
 
 
     
 
 
     
 
 
  
Total
            
 
1,784
 
   
 
1,714
 
   
 
1,767
 
   
 
1,713
 
   
 
1,776
 
   
 
9,612
 
             
 
 
     
 
 
     
 
 
     
 
 
     
 
 
     
 
 
  
 
(*)
Average duration of plan´s actuarial liabilities.
Summary of Sensitivity of Defined Benefit Obligation
h) Sensitivity analysis
To measure the effects of changes in the key assumptions, sensitivity tests are conducted in actuarial liabilities annually. The sensitivity analysis considers a vision of the impacts caused by changes in assumptions, which could affect the income for the period and stockholders’ equity at the balance sheet date. This type of analysis is usually carried out under the
ceteris paribus
condition, in which the sensitivity of a system is measured when only one variable of interest is changed and all the others remain unchanged. The results obtained are shown in the table below:
 
    
BD and CV plans
    
Other post-employment benefits
  
Main assumptions
   
Present value

of liability
    
Income
     
Stockholders´ equity
(Other Comprehensive
Income)
(*)
   
Present value
of liability
    
Income
     
Stockholders´ equity
(Other Comprehensive
Income)
(*)
 
Discount rate
                                                   
Increase by 0.5%
      (835 )      —          308       (24 )      —          24  
Decrease by 0.5%
      905       —          (420 )      27       —          (27 ) 
Mortality table
                                                   
Increase by 5%
      (234 )      —          87       (10 )      —          10  
Decrease by 5%
      245       —          (91 )      11       —          (11 ) 
Medical inflation
                                                   
Increase by 1%
      —         —          —         63       —          (63 ) 
Decrease by 1%
      —         —          —         (53 )      —          53  
 
(*)
Net of effects of asset ceiling