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Fair value measurement (Tables)
12 Months Ended
Mar. 31, 2023
Information about Changes in Fair Value of Level 3 Assets Pertaining to Instruments Carried at Fair Value
The following table summarizes certain additional information about changes in the fair value of Level 3 assets pertaining to instruments carried at fair value for the fiscal years ended March 31, 2022 and March 31, 2023:
 
Particulars
  
As of March 31, 2022
 
    
(In millions)
 
Beginning balance at April 1, 2021
   Rs.   161,163.9  
Total gains or losses (realized/ unrealized)
        
— Included in net income
     —    
— Included in other comprehensive income
     (2,841.2 )
Purchases/additions
     77,995.6  
Sales
     —    
Issuances
     —    
Settlements
     (92,423.6
Transfers into Level 3
     —    
Transfers out of Level 3
     —    
Foreign currency translation adjustment
     —    
    
 
 
 
Ending balance at March 31, 2022
   Rs.   143,894.7  
    
 
 
 
Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date
   Rs   —    
    
 
 
 
Change in unrealized gains/ losses for the period included in other comprehensive income for assets held at the end of the reporting period
   Rs   (3,055.8
    
 
 
 
 
 
Particulars
  
As of March 31, 2023
 
    
(In millions)
 
Beginning balance at April 1, 2022
   Rs.   143,894.7  
Total gains or losses (realized/unrealized)
        
— Included in net income
     —    
— Included in other comprehensive income
     (2,776.3 )
Purchases/additions
     110,969.4  
Sales
     —    
Issuances
     —    
Settlements
     (103,652.2
Transfers into Level 3
     —    
Transfers out of Level 3
     —    
Foreign currency translation adjustment
     —    
    
 
 
 
Ending balance at March 31, 2023
   Rs.   148,435.6  
    
 
 
 
Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date
   Rs   —    
    
 
 
 
Change in unrealized gains/ (losses) for the period included in other comprehensive income for assets held at the end of the reporting period
   Rs   (1,867.6)  
    
 
 
 
Investments  
Fair Value Measured on Recurring Basis
The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value:
 
    
Fair Value Measurements Using
 
Particulars
  
Total
    
Quoted prices in
active markets
for identical assets
(Level 1)
    
Significant other
observable inputs
(Level 2)
    
Significant
unobservable
inputs
(Level 3)
 
           
(In millions)
        
Trading account securities
   Rs.  53,199.5      Rs.   304.1      Rs.   52,895.4      Rs.   —    
Securities available-for-sale
     4,388,563.1        174,680.3        4,069,988.1        143,894.7  
Equity securities
(
*
)
     12,070.8        3,889.8        8,181.0        —    
    
 
 
    
 
 
    
 
 
    
 
 
 
Total
   Rs.  4,453,833.4      Rs.   178,874.2      Rs.   4,131,064.5      Rs.   143,894.7  
    
 
 
    
 
 
    
 
 
    
 
 
 
 
(
*
)
 
Equity securities classified within other assets.
The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:
 
                                                                                         
    
Fair Value Measurements Using
 
Particulars
  
Total
    
Quoted prices in
active markets
for identical assets
(Level 1)
    
Significant other
observable inputs
(Level 2)
    
Significant
unobservable
inputs (Level 3)
 
           
(In millions)
        
Trading account securities
  
Rs.  
135,831.1
 
  
Rs.  
184.1
 
  
Rs.  
135,647.0
 
  
Rs.  
—  
 
Securities available-for-sale
  
 
4,878,844.0
 
  
 
507,504.1
 
  
 
4,222,904.3
 
  
 
148,435.6
 
Equity securities
(
*
)
  
 
19,462.6
 
  
 
3,313.7
 
  
 
16,148.9
 
  
 
—  
 
Total
  
Rs.  
5,034,137.7
 
  
Rs.  
511,001.9
 
  
Rs.  
4,374,700.2
 
  
Rs.  
148,435.6
 
    
 
 
    
 
 
    
 
 
    
 
 
 
Total
  
US$
61,250.0
 
  
US$
6,217.3
 
  
US$
53,226.7
 
  
US$
1,806.0
 
    
 
 
    
 
 
    
 
 
    
 
 
 
 
(
*
)
 
Equity securities classified within other assets.
Derivative  
Fair Value Measured on Recurring Basis
The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy:
 
           
Fair Value Measurements Using
 
Particulars
  
Total
    
Quoted prices in
active markets
for identical assets
(Level 1)
    
Significant other
observable inputs
(Level 2)
    
Significant
unobservable
inputs
(Level 3)
 
                             
    
(In millions)
 
Derivative assets
   Rs.   80,202.3      Rs.   —        Rs.   80,202.3      Rs.   —    
Derivative liabilities
   Rs.   74,819.2      Rs.   —        Rs.   74,819.2      Rs.   —    
The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of valuation inputs within the fair value hierarchy:
 
                                                                                 
           
Fair Value Measurements Using
 
Particulars
  
Total
    
Quoted prices in
active markets
for identical assets
(Level 1)
    
Significant other
observable inputs
(Level 2)
    
Significant
unobservable
inputs
(Level 3)
 
                             
    
(In millions)
 
Derivative assets
  
Rs.  
121,749.4
 
  
Rs.  
—  
 
  
Rs.  
121,749.4
 
  
Rs.  
—  
 
Derivative liabilities
  
Rs.  
98,783.5
 
  
Rs.  
—  
 
  
Rs.  
98,783.5
 
  
Rs.  
—