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Employee stock incentive plans (Tables)
12 Months Ended
Mar. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Schedule of weighted average inputs of fair value of options granted
The weighted average inputs used in computing the fair value of options granted were as follows:
 
 
 
 
 
 
Grants made on
 
 
 
 
 
 
 
January 17, 2022
 
 
October 28, 2021
 
 
October 28, 2021
 
Expected volatility  28.60%  29.20%  28.53%
Exercise price Rs.5.00  Rs.4,663.00  Rs.5.00 
Option life  
6.5 Years
   
5.0 Years
   
2.5 Years
 
Risk-free interest rate  6.52%  5.94%  4.86%
Expected dividends  0.54%  0.55%  0.55%
Grant date share price Rs.4,672.00  Rs.4,570.00  Rs.4,570.00 
 
 
 
 
 
 
Grants made on
 
 
 
 
 
 
 
October 28, 2021
 
 
May 13, 2021
 
 
May 13, 2021
 
Expected volatility  29.04%  29.38%  30.02%
Exercise price Rs.5.00  Rs.5,301.00  Rs.5.00 
Option life  
5.0 Years
   
5.0 Years
   
2.5 Years
 
Risk-free interest rate  5.99%  5.70%  4.64%
Expected dividends  0.54%  0.47%  0.47%
Grant date share price Rs.4,570.00  Rs.5,301.00  Rs.5,301.00 
 
 
 
 
 
 
Grants made on
 
 
 
 
 
 
 
October 27, 2020
 
 
May 19, 2020
 
 
May 19, 2020
 
Expected volatility  30.81%  29.12%  30.47%
Exercise price Rs.5.00  Rs.3,679.00  Rs.5.00 
Option life  
2.5 Years
   
5.0 Years
   
2.5 Years
 
Risk-free interest rate  4.36%  5.67%  4.62%
Expected dividends  0.49%  0.68%  0.68%
Grant date share price Rs.5,099.00  Rs.3,700.00  Rs.3,700.00 
Disclosure of detailed information about share based payment expense
 
Share-based payment expense
 
 
 
For the Year Ended March 31,
 
 
 
2022
 
 
2021
 
 
2020
 
Equity settled share-based payment expense
(1)
 Rs.592  Rs.584  Rs.521 
Cash settled share-based payment expense
(2)
  148   157   94 
 
 
Rs.
740
 
 
Rs.
741
 
 
Rs.
615
 
 
(1)
As of March 31, 2022 and 2021, there was Rs.701 and Rs.612, respectively,
of
total unrecognized compensation cost related to unvested stock options. This cost is expected to be recognized over a weighted-average period of 1.93 years and 1.95 years, respectively.
 
(2)
Certain of the Company’s employees are eligible for share-based payment awards that are settled in cash. These awards
entitl
e the employees to a cash payment, on the exercise date, subject to vesting upon satisfaction of certain service conditions which range from 1 to 4 years. The amount of cash payment is determined based on the price of the Company’s ADSs at the time of vesting. As of March 31, 2022 and 2021, there was Rs.101 and Rs.126, respectively of total unrecognized compensation cost related to unvested awards. This cost is expected to be recognized over a weighted-average period of 1.82 years and 1.88 years, respectively. This scheme does not involve dealing in or subscribing to or purchasing securities of the Company, directly or
indirectly.
Disclosure And Details About 2018 Plan
The DRL 2018 Plan provides for option grants having an exercise price equal to the fair market value of the underlying equity shares on the date of grant as follows:
 
Particulars
 
Number of securities
to be acquired from
secondary market
  
Number of securities
to be issued by the
Company
 
 
Total
 
Options reserved against equity shares  2,500,000   1,500,000   4,000,000 
Options reserved against ADRs  -   1,000,000   1,000,000 
Total
 
 
2,500,000
 
 
 
2,500,000
 
 
 
5,000,000
 
DRL 2018 Plan [Member]  
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Disclosure Of Number Of Share Options, Weighted Average Exercise Price, Range Of Exercise Prices And Weighted Average Remaining Contractual Life
Stock option activity under the DRL 2018 Plan during the years ended March 31, 2022 and 2021 was as follows:
 
 
 
For the Year Ended March 31, 2022
 
Fair Market Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  385,930  Rs.
2,607.00 to
Rs. 
3,679.00
  Rs.3,056.51   71 
Granted during the year  8,856   
4,662.70/ 5,301.00
   5,289.76   90 
Expired/forfeited during the year  (37,021)  
2,607.00 to 5,310.00
   3,157.39   - 
Exercised during the year  (106,730)  
2,607.00 to 3,679.00
   2,938.55   - 
Outstanding at the end of the year
 
 
251,035
 
 
Rs.
2,607.00 to
Rs. 
5,301.00
 
 
Rs.
3,170.57
 
 
 
64
 
Exercisable at the end of the year
 
 
68,130
 
 
Rs.
2,607.00 to
Rs.
 
3,679.00
 
 
Rs.
2,859.13
 
 
 
47
 
 
 
 
For the Year Ended March 31, 2021
 
Fair Market Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  375,775  Rs.
2,607.00/
Rs. 
2,814.00
  Rs.2,697.12   75 
Granted during the year  150,740   3,679.00   3,679.00   90 
Expired/forfeited during the year  (55,335)  
2,607.00 to 3,679.00
   2,904.51   - 
Exercised during the year  (85,250)  
2,607.00/ 2,814.00
   2,671.71   - 
Outstanding at the end of the year
 
 
385,930
 
 
Rs.
2,607.00 to
Rs.
 
3,679.00
 
 
Rs.
3,056.51
 
 
 
71
 
Exercisable at the end of the year
 
 
71,225
 
 
Rs.
2,607.00/
Rs.
 
2,814.00
 
 
Rs.
2,665.63
 
 
 
51
 
DRL 2002 Plan [Member]  
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Disclosure of Number of Options Reserved
After the stock split effected in the form of a stock dividend issued by the Company in August 2006, the DRL 2002 Plan provides for stock option grants in the above two categories as follows:
 
Particulars
 
Number of
options reserved
under category A
  
Number of
options reserved
under category B
 
 
Total
 
Options reserved under original Plan  300,000   1,995,478   2,295,478 
Options exercised prior to stock dividend date (A)  94,061   147,793   241,854 
Balance of shares that can be allotted on exercise of options (B)  205,939   1,847,685   2,053,624 
Options arising from stock dividend (C)  205,939   1,847,685   2,053,624 
Options reserved after stock dividend (A+B+C)
 
 
505,939
 
 
 
3,843,163
 
 
 
4,349,102
 
Disclosure Of Number Of Share Options, Weighted Average Exercise Price, Range Of Exercise Prices And Weighted Average Remaining Contractual Life
 
Category A — Fair Market Value Options:
There was no stock activity under this category during the years ended March 31, 2022 and 2021, and there were no stock options outstanding under this category as of March 31, 2022 and 2021.

Category B — Par Value Options:
Stock options activity under this category during the years ended March 31, 2022 and 2021 was as set forth in the below table.
 
 
 
For the Year Ended March 31, 2022
 
Category B — Par Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  217,253  Rs.5.00  
Rs.
5.00   69 
Granted during the year  106,870   5.00   5.00   91 
Expired/forfeited during the year  (30,322)  5.00   5.00   - 
Exercised during the year  (86,626)  5.00   5.00   - 
Outstanding at the end of the year
 
 
207,175
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
74
 
Exercisable at the end of the year
 
 
21,235
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
43
 
 
 
 
For the Year Ended March 31, 2021
 
Category B — Par Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  232,837  Rs.5.00  Rs.5.00   69 
Granted during the year  92,092   5.00   5.00   93 
Expired/forfeited during the year  (35,646)  5.00   5.00   - 
Exercised during the year  (72,030)  5.00   5.00   - 
Outstanding at the end of the year
 
 
217,253
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
69
 
Exercisable at the end of the year
 
 
46,130
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
44
 
DRL 2007 Plans [Member]  
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Disclosure Of Number Of Share Options, Weighted Average Exercise Price, Range Of Exercise Prices And Weighted Average Remaining Contractual Life
 
 
 
For the Year Ended March 31, 2022
 
Category B — Par Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  141,999  Rs.5.00  Rs.5.00   71 
Granted during the year  55,884   5.00   5.00   90 
Expired/forfeited during the year  (18,996)  5.00   5.00   - 
Exercised during the year  (31,872)  5.00   5.00   - 
Outstanding at the end of the year
 
 
147,015
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
68
 
Exercisable at the end of the year
 
 
27,929
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
40
 
 
 
 
For the Year Ended March 31, 2021
 
Category B — Par Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  151,583  Rs.5.00  Rs.5.00   73 
Granted during the year  52,316   5.00   5.00   89 
Expired/forfeited during the year  (19,933)  5.00   5.00   - 
Exercised during the year  (41,967)  5.00   5.00   - 
Outstanding at the end of the year
 
 
141,999
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
71
 
Exercisable at the end of the year
 
 
15,393
 
 
Rs.
5.00
 
 
Rs.
5.00
 
 
 
41
 
DRL 2007 Plans [Member] | Category A [Member]  
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Disclosure Of Number Of Share Options, Weighted Average Exercise Price, Range Of Exercise Prices And Weighted Average Remaining Contractual Life
Stock options activity under the DRL 2007 Plan for the above two categories of options during the years ended March 31, 2022 and 2021 was as follows:
 
 
For the Year Ended March 31, 2022
 
Category A — Fair Market Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  270,340  Rs.
1,982.00 to Rs. 3,679.00
  Rs.2,791.65   67 
Granted during the year  5,144   5,301.00   5,301.00   90 
Expired/forfeited during the year  (3,150)  3,679.00   3,679.00   - 
Exercised during the year  (6,120)  
2,607.00 to 3,679.00
   3,078.55   - 
Outstanding at the end of the year
 
 
266,214
 
 
Rs.
1,982.00 to
Rs.
 
5,301.00
 
 
 
2,823.04
 
 
 
56
 
Exercisable at the end of the year
 
 
132,845
 
 
Rs.
1,982.00 to
Rs. 
3,679.00
 
 
Rs.
2,457.33
 
 
 
41
 
 
 
 
For the Year Ended March 31, 2021
 
Category A — Fair Market Value Options
 
Shares arising out
of options
  
Range of exercise
prices
  
Weighted average
exercise price
  
Weighted average
remaining useful
life (months)
 
Outstanding at the beginning of the year  202,760  Rs.1,982.00 to Rs. 2,814.00  Rs.2,353.62   72 
Granted during the year  96,080   3,679.00   3,679.00   90 
Expired/forfeited during the year  (13,348)  
2,607.00/ 2,814.00
   2,678.03   - 
Exercised during the year  (15,152)  
2,607.00/ 2,814.00
   2,643.48   - 
Outstanding at the end of the year
 
 
270,340
 
 
Rs.
1,982.00 to
Rs. 
3,679.00
 
 
Rs.
2,791.65
 
 
 
67
 
Exercisable at the end of the year
 
 
69,530
 
 
Rs.
1,982.00 to
Rs.
 
2,814.00
 
 
Rs.
2,182.21
 
 
 
45