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Balances Payable to Related Parties (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2019 INR (₨)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 INR (₨)
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	₨ 1,420,309.4	$ 20,536.6	₨ 1,190,102.2
Balances in interest-bearing deposits	7,804,717.5	112,850.2	6,693,649.3
Principal Owner
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	32,176.8		21,758.0
Balances in interest-bearing deposits	733.1		10,749.7
Accrued expenses and other liabilities	836.4		327.8
Total	33,746.3		32,835.5
Others
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	14,170.1		11,771.8
Balances in interest-bearing deposits	1,732.9		1,905.0
Accrued expenses and other liabilities	0.0
Total	15,903.0		13,676.8
Related Party
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	46,346.9	670.1	33,529.8
Balances in interest-bearing deposits	2,466.0	35.7	12,654.7
Accrued expenses and other liabilities	836.4	12.1	327.8
Total	₨ 49,649.3	$ 717.9	₨ 46,512.3

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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.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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