XML 153 R141.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefits - Summary of Defined Benefit Plan Actuarial (Gains)/ Losses Recognized in Other Comprehensive Income (Detail) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Re-measurement of net defined benefit liability/(asset)      
Return on plan assets excluding interest income ₨ (18) ₨ (189) ₨ 30
Actuarial loss/ (gain) arising from financial assumptions (296) 363 180
Actuarial loss/ (gain) arising from demographic assumptions (54) (73) 2
Actuarial loss/ (gain) arising from experience adjustments (454) (313) 798
Defined benefit plan actuarial (gains)/ losses ₨ (822) ₨ (212) ₨ 1,010