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Details of Guarantees and Documentary Credits Outstanding (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2016 INR (₨)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 INR (₨)
Derivatives, Fair Value [Line Items]
Bank guarantees	₨ 652,140.6	$ 9,843.6	₨ 555,586.6
Estimated fair values of bank guarantees	(2,198.6)	(33.2)	(1,758.7)
Financial guarantees
Derivatives, Fair Value [Line Items]
Bank guarantees	194,250.1	2,932.1	160,779.8
Performance guarantees
Derivatives, Fair Value [Line Items]
Bank guarantees	140,364.7	2,118.7	114,906.3
Documentary credits
Derivatives, Fair Value [Line Items]
Bank guarantees	317,525.8	4,792.8	279,900.5
Estimated fair values of bank guarantees	(326.1)	(4.9)	(249.0)
Guarantees
Derivatives, Fair Value [Line Items]
Estimated fair values of bank guarantees	₨ (1,872.5)	$ (28.3)	₨ (1,509.7)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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- Definition

Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12201-110248

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