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Earnings per equity share (Tables)
 12 Months Ended
Mar. 31, 2018
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Summary of Earnings Per Equity Share
     Year ended March 31,  
     2016      2017      2018  

Profit attributable to equity holders of the Company

    ₹ 89,075      ₹ 84,895      ₹ 80,081  

Weighted average number of equity shares outstanding

      4,913,118,800        4,857,081,010        4,750,043,400  
  

 

 

     

 

 

     

 

 

  

Basic earnings per share

    ₹ 18.13      ₹ 17.48      ₹ 16.86  
  

 

 

     

 

 

     

 

 

  

 

     Year ended March 31,  
     2016      2017      2018  

Profit attributable to equity holders of the Company

    ₹ 89,075      ₹ 84,895      ₹ 80,081  

Weighted average number of equity shares outstanding

      4,913,118,800        4,857,081,010        4,750,043,400  

Effect of dilutive equivalent share options

      10,261,016        14,266,128        8,318,575  
  

 

 

     

 

 

     

 

 

  

Weighted average number of equity shares for diluted earnings per share

      4,923,379,816        4,871,347,138        4,758,361,975  
  

 

 

     

 

 

     

 

 

  

Diluted earnings per share

    ₹ 18.09      ₹ 17.43      ₹ 16.83