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Accumulated other comprehensive income (Tables)
12 Months Ended
Mar. 31, 2023
Changes in Accumulated Other Comprehensive Income After Tax
The below table presents the changes in AOCI after income tax for the fiscal years ended March 31, 2022 and March 31, 2023.
 
                     
                     
                     
 
  
AFS debt securities
 
  
Foreign currency
translation reserve
 
  
Total
 
 
  
 
 
  
 
 
  
 
 
 
  
(In millions)
 
                                                                                     
Balance, March 31, 2021
  
Rs.  
25,212.9
 
  
Rs.  
1,973.4
 
  
Rs.  
27,186.3
 
Net unrealized gain/(loss) arising during the period
  
 
(36,088.6
)
  
 
1,297.5
 
  
 
(34,791.1
)
Amounts reclassified to income
  
 
(10,187.7
)
  
 
—  
 
  
 
(10,187.7
)
    
 
 
    
 
 
    
 
 
 
Balance, March 31, 2022
  
Rs.  
(21,063.4
)
  
Rs.  
3,270.9
 
  
Rs.  
(17,792.5
)
    
 
 
    
 
 
    
 
 
 
 
                     
                     
                     
 
  
AFS debt securities
 
  
Foreign currency
translation reserve
 
  
Total
 
 
  
 
 
  
 
 
  
 
 
 
  
(In millions)
 
Balance, March 31, 2022
  
Rs.  
(21,063.4
  
Rs.  
3,270.9
 
  
Rs.  
(17,792.5
Net unrealized gain/(loss) arising during the period
  
 
(52,522.8
)
 
  
 
3,378.5
 
  
 
(49,144.3
)
 
Amounts reclassified to income
  
 
(1,336.9
)
 
  
 
—  
 
  
 
(1,336.9
)
 
Balance, March 31, 2023
  
Rs.  
(74,923.1
)
 
  
Rs.  
6,649.4
 
  
Rs.  
(68,273.7
)
 
    
 
 
    
 
 
    
 
 
 
Balance, March 31, 2023
  
US$  
(911.6
)
 
  
US$  
80.9
 
  
US$  
(830.7
)
 
    
 
 
    
 
 
    
 
 
 
Reclassification Out of Accumulated Other Comprehensive Income (OCI) by Income line Item and the Related Tax Effect
The below table presents the reclassification out of AOCI by income line item and the related income tax effect for the fiscal years ended March 31, 2022 and March 31, 2023.
 
 
  
As of March 31,
 
 
  
2022
 
  
2023
 
  
2023
 
 
  
 
 
  
 
 
  
 
 
 
  
(In millions)
 
AFS debt securities:
                         
Realized (gain)/loss on sales of AFS debt securities, net
  Rs. (10,699.4 )    Rs.   (1,857.5    US$     (22.7
Allowance on AFS debt securities
    (2,915.1 )      70.9        0.9  
   
 
 
    
 
 
    
 
 
 
Total before income tax
  Rs.   (13,614.5 )    Rs.   (1,786.6    US$     (21.8
Income tax
    3,426.8        449.7        5.5  
   
 
 
    
 
 
    
 
 
 
Net of income tax
  Rs. (10,187.7 )    Rs.   (1,336.9    US$     (16.3