Share-based payments (Details 1)	Mar. 31, 2018 INR (₨) ₨ / shares	Mar. 31, 2017 INR (₨) ₨ / shares	Mar. 31, 2016 ₨ / shares	Mar. 31, 2015
Number outstanding	5,180,440	5,837,400	5,665,800	5,870,800
Number exercisable	4,340,070	3,711,130	2,544,180
Weighted average exercise price \| ₨ / shares	₨ 79	₨ 79.14	₨ 79.1
Bottom of range [member]
Range of exercise price	₨ 57.66	₨ 60.60
Weighted average exercise price	₨ 57.66	₨ 60.60
Weighted average remaining contractual life	0.06	1.80
Top of range [member]
Range of exercise price	₨ 146.23	₨ 82.00
Weighted average exercise price	₨ 146.23	₨ 82.00
Weighted average remaining contractual life	4.81	5.79

The exercise price of outstanding share options.

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- Definition

The number of share options outstanding in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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- Definition

The number of share options exercisable in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
-Paragraph 45
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- Definition

The weighted average exercise price of share options outstanding in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2017-01-01
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+ Details

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- Definition

The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]]

+ References

+ Details

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- Definition

The weighted average exercise price of share options exercisable in share based payments arrangement.

+ References

No definition available.

+ Details

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