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Financial instruments (Tables) | 12 Months Ended
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Mar. 31, 2017
Schedule of Derivative Instruments | The following table presents the aggregate notional principal amounts of the Bank’s outstanding forward exchange and other derivative contracts as of March 31, 2016 and March 31, 2017, together with the fair values on each reporting date.
|  | As of March 31, 2016 |
|  | Notional |  |  | Gross Assets |  |  | Gross Liabilities |  |  | Net Fair Value |
|  | (In millions) |
Interest rate derivatives |  | Rs. | 2,203,083.9 |  |  | Rs. | 9,007.6 |  |  | Rs. | 9,620.6 |  |  | Rs. | (613.0 | )
Forward rate agreements |  |  | 4,292.5 |  |  |  | 3.0 |  |  |  | 3.1 |  |  |  | (0.1 | )
Currency options |  |  | 252,982.7 |  |  |  | 1,359.3 |  |  |  | 1,836.7 |  |  |  | (477.4 | )
Currency swaps |  |  | 110,112.4 |  |  |  | 5,423.7 |  |  |  | 3,359.7 |  |  |  | 2,064.0 |
Forward exchange contracts |  |  | 5,290,757.7 |  |  |  | 69,429.4 |  |  |  | 63,762.3 |  |  |  | 5,667.1 |
Total |  | Rs. | 7,861,229.2 |  |  | Rs. | 85,223.0 |  |  | Rs. | 78,582.4 |  |  | Rs. | 6,640.6 |
|  | As of March 31, 2017 |
|  | Notional |  |  | Gross Assets |  |  | Gross Liabilities |  |  | Net Fair Value |  |  | Notional |  |  | Net Fair Value |
|  | (In millions) |
Interest rate derivatives |  | Rs. | 2,391,507.8 |  |  | Rs. | 9,099.4 |  |  | Rs. | 8,722.7 |  |  | Rs. | 376.7 |  |  | US$ | 36,877.5 |  |  | US$ | 5.8 |
Forward rate agreements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Currency options |  |  | 189,005.0 |  |  |  | 2,072.5 |  |  |  | 2,066.0 |  |  |  | 6.5 |  |  |  | 2,914.5 |  |  |  | 0.1 |
Currency swaps |  |  | 142,555.8 |  |  |  | 4,154.6 |  |  |  | 4,084.1 |  |  |  | 70.5 |  |  |  | 2,198.2 |  |  |  | 1.1 |
Forward exchange contracts |  |  | 4,699,301.4 |  |  |  | 123,890.6 |  |  |  | 130,187.7 |  |  |  | (6,297.1 | ) |  |  | 72,464.2 |  |  |  | (97.1 | )
Total |  | Rs. | 7,422,370.0 |  |  | Rs. | 139,217.1 |  |  | Rs. | 145,060.5 |  |  | Rs. | (5,843.4 | ) |  | US$ | 114,454.4 |  |  |  | US$ (90.1 | )
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance | The following table summarizes certain information related to derivative amounts recognized in income:
|  | Non-interest revenue, net – Derivatives for the years ended March 31, |
|  | 2015 |  |  | 2016 |  |  | 2017 |  |  | 2017 |
|  | (In millions) |
Interest rate derivatives |  | Rs. | (383.4 | ) |  | Rs. | (1,063.1 | ) |  | Rs. | 399.3 |  |  | US$ | 6.2 |
Forward rate agreements |  |  | 3.0 |  |  |  | 2.1 |  |  |  | 1.2 |  |  |  | — |
Currency options |  |  | 303.0 |  |  |  | 413.4 |  |  |  | 677.7 |  |  |  | 10.4 |
Currency swaps |  |  | 151.3 |  |  |  | 829.5 |  |  |  | (2,453.4 | ) |  |  | (37.8 | )
Forward exchange contracts |  |  | (7,466.9 | ) |  |  | 14,885.3 |  |  |  | (4,363.3 | ) |  |  | (67.3 | )
Total gains/(losses) |  | Rs. | (7,393.0 | ) |  | Rs. | 15,067.2 |  |  | Rs. | (5,738.5 | ) |  |  | US$ (88.5 | )
Amounts Subject to Enforceable Netting Arrangements |
|  | As of March 31, 2016 |
|  | Amounts subject to enforceable netting arrangements |  |  |  |
|  | Effects of offsetting on balance sheet |  |  | Related amounts not offset |  |  |  |
|  | Gross Amounts |  |  | Amounts offset |  |  | Net amounts reported in the balance sheet |  |  | Financial instruments |  |  | Financial collateral (1) |  |  | Net amount |
|  | (In millions) |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative assets |  | Rs. | 85,223.0 |  |  | Rs. | — |  |  | Rs. | 85,223.0 |  |  | Rs. | 60,816.4 |  |  | Rs. | 4,181.1 |  |  | Rs. | 20,225.5 |
Securities purchased under agreements to resell |  |  | 1,019.9 |  |  |  | — |  |  |  | 1,019.9 |  |  |  | — |  |  |  | 1,019.9 |  |  |  | — |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | Rs. | 78,582.4 |  |  | Rs. | — |  |  | Rs. | 78,582.4 |  |  | Rs. | 60,816.4 |  |  | Rs. | 83.4 |  |  | Rs. | 17,682.6 |
Securities sold under repurchase agreements |  |  | 306,060.0 |  |  |  | — |  |  |  | 306,060.0 |  |  |  | — |  |  |  | 306,060.0 |  |  |  | — |
(1) | Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.
|  | As of March 31, 2017 |
|  | Amounts subject to enforceable netting arrangements |  |  |  |  |  |  |
|  | Effects of offsetting on balance sheet |  |  | Related amounts not offset |  |  |  |  |  |  |
|  | Gross Amounts |  |  | Amounts offset |  |  | Net amounts reported in the balance sheet |  |  | Financial instruments |  |  | Financial collateral (1) |  |  | Net amount |  |  |  |
|  | (In millions) |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative assets |  | Rs. | 139,217.1 |  |  | Rs. | — |  |  | Rs. | 139,217.1 |  |  | Rs. | 106,010.2 |  |  | Rs. | 2,911.9 |  |  | Rs. | 30,295.0 |  |  | US$ | 467.2 |
Securities purchased under agreements to resell |  |  | 50,000.0 |  |  |  | — |  |  |  | 50,000.0 |  |  |  | — |  |  |  | 50,000.0 |  |  |  | — |  |  |  | — |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | Rs. | 145,060.5 |  |  | Rs. | — |  |  | Rs. | 145,060.5 |  |  | Rs. | 106,010.2 |  |  | Rs. | 2,772.7 |  |  | Rs. | 36,277.6 |  |  | US$ | 559.4 |
Securities sold under repurchase agreements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
(1) | Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.
Amounts Subject to Enforceable Netting Arrangements |
|  | As of March 31, 2016 |
|  | Amounts subject to enforceable netting arrangements |  |  |  |
|  | Effects of offsetting on balance sheet |  |  | Related amounts not offset |  |  |  |
|  | Gross Amounts |  |  | Amounts offset |  |  | Net amounts reported in the balance sheet |  |  | Financial instruments |  |  | Financial collateral (1) |  |  | Net amount |
|  | (In millions) |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative assets |  | Rs. | 85,223.0 |  |  | Rs. | — |  |  | Rs. | 85,223.0 |  |  | Rs. | 60,816.4 |  |  | Rs. | 4,181.1 |  |  | Rs. | 20,225.5 |
Securities purchased under agreements to resell |  |  | 1,019.9 |  |  |  | — |  |  |  | 1,019.9 |  |  |  | — |  |  |  | 1,019.9 |  |  |  | — |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | Rs. | 78,582.4 |  |  | Rs. | — |  |  | Rs. | 78,582.4 |  |  | Rs. | 60,816.4 |  |  | Rs. | 83.4 |  |  | Rs. | 17,682.6 |
Securities sold under repurchase agreements |  |  | 306,060.0 |  |  |  | — |  |  |  | 306,060.0 |  |  |  | — |  |  |  | 306,060.0 |  |  |  | — |
(1) | Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.
|  | As of March 31, 2017 |
|  | Amounts subject to enforceable netting arrangements |  |  |  |  |  |  |
|  | Effects of offsetting on balance sheet |  |  | Related amounts not offset |  |  |  |  |  |  |
|  | Gross Amounts |  |  | Amounts offset |  |  | Net amounts reported in the balance sheet |  |  | Financial instruments |  |  | Financial collateral (1) |  |  | Net amount |  |  |  |
|  | (In millions) |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative assets |  | Rs. | 139,217.1 |  |  | Rs. | — |  |  | Rs. | 139,217.1 |  |  | Rs. | 106,010.2 |  |  | Rs. | 2,911.9 |  |  | Rs. | 30,295.0 |  |  | US$ | 467.2 |
Securities purchased under agreements to resell |  |  | 50,000.0 |  |  |  | — |  |  |  | 50,000.0 |  |  |  | — |  |  |  | 50,000.0 |  |  |  | — |  |  |  | — |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities |  | Rs. | 145,060.5 |  |  | Rs. | — |  |  | Rs. | 145,060.5 |  |  | Rs. | 106,010.2 |  |  | Rs. | 2,772.7 |  |  | Rs. | 36,277.6 |  |  | US$ | 559.4 |
Securities sold under repurchase agreements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
(1) | Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.
Schedule of Guarantor Obligations | Details of guarantees and documentary credits outstanding are set out below:
|  | As of March 31, |
|  | 2016 |  |  | 2017 |  |  | 2017 |
|  | (In millions) |
Nominal values: |  |  |  |  |  |  |  |  |  |  |  |
Bank guarantees: |  |  |  |  |  |  |  |  |  |  |  |
Financial guarantees |  | Rs. | 194,250.1 |  |  | Rs. | 202,430.1 |  |  | US$ | 3,121.5 |
Performance guarantees |  |  | 140,364.7 |  |  |  | 166,964.2 |  |  |  | 2,574.6 |
Documentary credits |  |  | 317,525.8 |  |  |  | 359,613.7 |  |  |  | 5,545.3 |
Total |  | Rs. | 652,140.6 |  |  | Rs. | 729,008.0 |  |  | US$ | 11,241.4 |
Estimated fair values: |  |  |  |  |  |  |  |  |  |  |  |
Guarantees |  | Rs. | (1,872.5 | ) |  | Rs. | (2,339.2 | ) |  | US$ | (36.1 | )
Documentary credits |  |  | (326.1 | ) |  |  | (340.2 | ) |  |  | (5.2 | )
Total |  | Rs. | (2,198.6 | ) |  | Rs. | (2,679.4 | ) |  | US$ | (41.3 | )

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- Definition Tabular disclosure of derivative and other financial assets that are subject to offsetting, including master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225877-175312 + Details
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41641-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41678-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41638-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579240-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41620-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12265-110248 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248 + Details
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