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Accumulated other comprehensive income | 12 Months Ended
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Mar. 31, 2022
Accumulated other comprehensive income | 18. Accumulated other comprehensive income The below table presents the changes in accumulated other comprehensive income (“OCI”) after income tax for the years ended March 31, 2021 and March 31, 2022.
|  | Available for sale securities |  |  | Foreign currency translation reserve |  |  | Total |
|  | (In millions) |
Balance, March 31, 2020 |  | Rs. | 49,225.4 |  |  | Rs. | 3,106.2 |  |  | Rs. | 52,331.6 |
Net unrealized gain/(loss) arising during the period |  |  | (740.6 | ) |  |  | (1,132.8 | ) |  |  | (1,873.4 | )
Amounts reclassified to income |  |  | (23,271.9 | ) |  |  | — |  |  |  | (23,271.9 | )
Balance, March 31, 2021 |  | Rs. | 25,212.9 |  |  | Rs. | 1,973.4 |  |  | Rs. | 27,186.3 |
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 | )
Balance, March 31, 2022 |  | US$ | (277.6 | ) |  | US$ | 43.1 |  |  | US$ | (234.5 | )
The below table presents the reclassification out of accumulated other comprehensive income (OCI) by income line item and the related income tax effect for years ended March 31, 2021 and March 31, 2022.
|  | As of March 31, |
|  | 2021 |  |  | 2022 |  |  | 2022 |
|  | (In millions) |
Available for sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Realized (gain)/loss on sales of available for sale debt securities, net |  | Rs. | (34,014.8 | ) |  | Rs. | (10,699.4 | ) |  | US$ | (141.0 | )
Allowance on available for sale debt securities |  |  | 2,915.1 |  |  |  | (2,915.1 | ) |  |  | (38.4 | )
Total before income tax |  | Rs. | (31,099.7 | ) |  | Rs. | (13,614.5 | ) |  | US$ | (179.4 | )
Income tax |  |  | 7,827.8 |  |  |  | 3,426.8 |  |  |  | 45.1 |
Net of income tax |  | Rs. | (23,271.9 | ) |  | Rs. | (10,187.7 | ) |  | US$ | (134.3 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI https://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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