XML 151 R141.htm IDEA: XBRL DOCUMENT v3.22.2
Financial Instruments - Additional Information (Detail)
₨ in Millions, $ in Millions
 12 Months Ended
Mar. 31, 2022
INR (₨)
Mar. 31, 2022
USD ($)
Mar. 31, 2021
INR (₨)
Financial Instruments [Line Items]      
Estimated fair values of bank guarantees ₨ 6,583.5 $ 86.7 ₨ 6,044.1
Margins in the form of cash and fixed deposit available to the bank to reimburse losses realized under guarantees 182,000.0   121,200.0
Outstanding Undrawn commitments to provide loans and financing to customers 730,900.0 9,600.0 628,300.0
Unconditional cancellable commitments 5,528,400.0 72,900.0 4,826,700.0
Guarantees      
Financial Instruments [Line Items]      
Estimated fair values of bank guarantees ₨ 5,760.7 $ 75.9 ₨ 5,500.7
Minimum      
Financial Instruments [Line Items]      
Remaining tenure of guarantees outstanding 1 day    
Maximum      
Financial Instruments [Line Items]      
Remaining tenure of guarantees outstanding 23 years 7 months 6 days