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Commitments and contingencies (Tables)

12 Months Ended

Mar. 31, 2019

Operating Leases of Lessee Disclosure

The rental expenses and sub-lease income is as follows:

		As of March 31,
		2017				2018				2019				2019
		(In millions)
The total minimum lease expense during the year recognized in the consolidated statement of income		Rs.	11,548.5			Rs.	12,311.3			Rs.	12,700.8			US$	183.6

Schedule of Future Minimum Rental Payments for Operating Leases

The future minimum lease payments as of March 31, 2019 were as follows:

Year ending March 31,		Payments
		(In millions)
2020		Rs.	10,538.6			US$	152.4
2021			9,921.4				143.5
2022			9,100.7				131.6
2023			8,137.3				117.7
2024			7,104.2				102.7
Thereafter			41,090.6				594.1
Total		Rs.	85,892.8			US$	1,242.0

Movement in Provision for Reward Points

The movement in provision for credit card and debit card reward points as of March 31, 2018 and March 31, 2019 is as follows:

		As of March 31,
		2018				2019				2019
		(In millions)
Opening provision of reward points		Rs.	4,312.4			Rs.	4,711.2			US$	68.1
Provision made during the year			2,650.9				3,747.3				54.2
Utilization/write back of provision			(2,220.7	)			(2,555.9	)			(37.0	)
Effect of change in rate of accrual of reward points			1.3				91.5				1.3
Effect of change in cost of reward points			(32.7	)			36.8				0.5
Closing provision of reward points		Rs.	4,711.2			Rs.	6,030.9			US$	87.1

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Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.

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Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

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