XML 79 R70.htm IDEA: XBRL DOCUMENT v3.23.2
Gross Unrealized Losses and Fair Value of Available for Sale Debt Securities (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2023
INR (₨)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
INR (₨)
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value ₨ 1,500,675.9 $ 18,258.6 ₨ 756,202.7
Less Than 12 Months Unrealized Losses 19,859.2 241.6 10,558.3
12 Months or Greater Fair Value 1,719,897.9 20,925.9 1,035,186.3
12 Months or Greater Unrealized Losses 87,055.4 1,059.2 40,285.1
Fair Value 3,220,573.8 39,184.5 1,791,389.0
Unrealized Losses 106,914.6 $ 1,300.8 50,843.4
Debt securities, other than asset and mortgage-backed securities      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 1,390,130.2   730,622.5
Less Than 12 Months Unrealized Losses 18,781.9   10,246.4
12 Months or Greater Fair Value 1,693,782.3   1,007,543.6
12 Months or Greater Unrealized Losses 86,239.5   40,016.2
Fair Value 3,083,912.5   1,738,166.1
Unrealized Losses 105,021.4   50,262.6
Debt securities, other than asset and mortgage-backed securities | Government of India securities      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 1,038,004.8   447,360.3
Less Than 12 Months Unrealized Losses 12,622.5   7,893.5
12 Months or Greater Fair Value 1,266,775.4   838,788.4
12 Months or Greater Unrealized Losses 67,722.0   35,052.8
Fair Value 2,304,780.2   1,286,148.7
Unrealized Losses 80,344.5   42,946.3
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 254,023.6   118,798.2
Less Than 12 Months Unrealized Losses 3,771.0   972.4
12 Months or Greater Fair Value 152,702.6   37,138.9
12 Months or Greater Unrealized Losses 4,708.0   311.1
Fair Value 406,726.2   155,937.1
Unrealized Losses 8,479.0   1,283.5
Debt securities, other than asset and mortgage-backed securities | Other corporate/financial institution bonds      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 21,596.9   15,823.3
Less Than 12 Months Unrealized Losses 443.0   163.5
12 Months or Greater Fair Value 4,205.1   0.0
12 Months or Greater Unrealized Losses 128.3   0.0
Fair Value 25,802.0   15,823.3
Unrealized Losses 571.3   163.5
Debt securities, other than asset and mortgage-backed securities | State government securities      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 75,707.7   146,365.0
Less Than 12 Months Unrealized Losses 1,923.6   1,213.6
12 Months or Greater Fair Value 270,099.2   131,616.3
12 Months or Greater Unrealized Losses 13,681.2   4,652.3
Fair Value 345,806.9   277,981.3
Unrealized Losses 15,604.8   5,865.9
Debt securities, other than asset and mortgage-backed securities | Government securities outside India      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 797.2   2,275.7
Less Than 12 Months Unrealized Losses 21.8   3.4
12 Months or Greater Fair Value 0.0   0.0
12 Months or Greater Unrealized Losses 0.0   0.0
Fair Value 797.2   2,275.7
Unrealized Losses 21.8   3.4
Mortgage-backed securities      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 0.0   23.0
Less Than 12 Months Unrealized Losses 0.0   1.3
12 Months or Greater Fair Value 17.5   0.0
12 Months or Greater Unrealized Losses 1.8   0.0
Fair Value 17.5   23.0
Unrealized Losses 1.8   1.3
Asset-backed securities      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 110,545.7   25,557.2
Less Than 12 Months Unrealized Losses 1,077.3   310.6
12 Months or Greater Fair Value 26,098.1   27,642.7
12 Months or Greater Unrealized Losses 814.1   268.9
Fair Value 136,643.8   53,199.9
Unrealized Losses 1,891.4   579.5
Other securities (including mutual fund units)      
Gain (Loss) on Securities [Line Items]      
Less Than 12 Months Fair Value 0.0   0.0
Less Than 12 Months Unrealized Losses 0.0   0.0
12 Months or Greater Fair Value 0.0   0.0
12 Months or Greater Unrealized Losses 0.0   0.0
Fair Value 0.0   0.0
Unrealized Losses ₨ 0.0   ₨ 0.0