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Balances Payable to Related Parties (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2017 INR (₨)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 INR (₨)
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	₨ 1,153,678.9	$ 17,790.0	₨ 882,445.8
Balances in interest-bearing deposits	5,277,644.0	81,382.3	4,575,414.5
Principal Owner
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	24,262.8		43,353.7
Balances in interest-bearing deposits	739.7		701.9
Accrued expenses and other liabilities	336.7		269.3
Total	25,339.2		44,324.9
Others
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	11,708.6		6,827.2
Balances in interest-bearing deposits	713.4		1,176.9
Accrued expenses and other liabilities	0.0		0.0
Total	12,422.0		8,004.1
Related Party
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	35,971.4	554.7	50,180.9
Balances in interest-bearing deposits	1,453.1	22.4	1,878.8
Accrued expenses and other liabilities	336.7	5.2	269.3
Total	₨ 37,761.2	$ 582.3	₨ 52,329.0

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- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03.15(1),(5))
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Carrying amount as of the balance sheet date of obligations due all related parties.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 850
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-Name Accounting Standards Codification
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