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Earnings per equity share (Tables)

12 Months Ended

Mar. 31, 2020

Weighted-average number of shares

		As of March 31,
		2018				2019				2020
Weighted average number of equity shares used in computing basic earnings per equity share			5,161,077,010				5,360,068,058				5,468,802,148
Effect of potential equity shares for stock options outstanding			66,800,242				53,585,896				36,990,405
Weighted average number of equity shares used in computing diluted earnings per equity share			5,227,877,252				5,413,653,954				5,505,792,553

Reconciliation of Earnings Per Share

The following are reconciliations of basic and diluted earnings per equity share and earnings per ADS.

		Fiscal years ended March 31,
		2018				2019				2020				2020
Basic earnings per share		Rs.	34.59			Rs.	41.07			Rs.	47.59			US$	0.63
Effect of potential equity shares for stock options outstanding			0.44				0.41				0.32				0.01
Diluted earnings per share		Rs.	34.15			Rs.	40.66			Rs.	47.27			US$	0.62
Basic earnings per ADS		Rs.	103.77			Rs.	123.21			Rs.	142.77			US$	1.89
Effect of potential equity shares for stock options outstanding			1.32				1.23				0.96				0.03
Diluted earnings per ADS		Rs.	102.45			Rs.	121.98			Rs.	141.81			US$	1.86

X

- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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X

- Definition

Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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