v3.25.2
Loans - Summary of Gross Loans Origination and Internally Assigned Credit Risk Ratings (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Retail loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior ₨ 1,660,541.8 $ 19,437.5 ₨ 1,517,172.2
Before four years 738,109.8 8,639.9 737,926.2
Before three years 1,436,058.8 16,809.8 1,063,060.5
Before two years 2,547,190.8 29,816.1 2,153,627.5
Before one years 4,152,270.9 48,604.4 3,726,120.8
Current 5,338,591.4 62,490.8 5,536,503.1
Revolving Loans 5,231,263.8 61,234.5 4,489,936.0
Revolving loans converted to term loans 427,538.1 5,004.5 366,061.8
Total 21,531,565.4 252,037.5 19,590,408.1
Retail loans | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 13,553.2 158.6 18,759.7
Before four years 5,125.7 60.0 14,440.6
Before three years 11,729.4 137.3 8,618.8
Before two years 29,815.6 349.0 16,233.9
Before one years 30,013.6 351.3 24,209.1
Current 8,099.5 94.8 3,632.3
Revolving Loans 30,051.8 351.8 25,837.7
Revolving loans converted to term loans 16,801.6 196.7 13,679.9
Total 145,190.4 1,699.5 125,412.0
Retail loans | Auto loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 17,996.6   17,086.4
Before four years 39,541.4   42,112.7
Before three years 111,933.8   88,862.3
Before two years 265,204.1   201,625.1
Before one years 406,692.1   402,140.9
Current 612,616.8   541,384.9
Revolving Loans 96,922.6   85,310.8
Revolving loans converted to term loans 0.0   0.0
Total 1,550,907.4   1,378,523.1
Retail loans | Auto loans | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,490.5   1,376.8
Before four years 1,103.9   1,913.2
Before three years 1,768.9   1,683.1
Before two years 2,771.3   1,835.8
Before one years 2,057.7   1,688.5
Current 394.4   150.7
Revolving Loans 0.0   0.0
Revolving loans converted to term loans 0.0   0.0
Total 9,586.7   8,648.1
Retail loans | Personal loans/Credit card      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 7,225.9   4,925.6
Before four years 20,096.4   29,598.6
Before three years 102,481.1   64,272.4
Before two years 325,240.5   240,817.4
Before one years 629,413.2   648,273.2
Current 1,241,263.4   1,195,151.2
Revolving Loans 672,934.7   570,146.5
Revolving loans converted to term loans 427,538.1   366,061.8
Total 3,426,193.3   3,119,246.7
Retail loans | Personal loans/Credit card | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 2,263.9   1,681.8
Before four years 1,559.0   4,635.9
Before three years 5,988.1   3,526.2
Before two years 18,451.4   10,050.8
Before one years 21,504.4   17,073.2
Current 4,065.9   2,838.5
Revolving Loans 25,111.9   21,307.8
Revolving loans converted to term loans 16,801.6   13,679.9
Total 95,746.2   74,794.1
Retail loans | Retail business banking      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 90,286.8   96,212.4
Before four years 62,968.2   64,673.1
Before three years 208,322.2   111,742.4
Before two years 406,185.5   319,787.1
Before one years 629,013.4   528,704.6
Current 770,115.0   701,737.8
Revolving Loans 2,800,798.9   2,384,978.8
Revolving loans converted to term loans 0.0   0.0
Total 4,967,690.0   4,207,836.2
Retail loans | Retail business banking | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,382.6   1,163.3
Before four years 176.1   298.8
Before three years 270.1   138.6
Before two years 39.7   19.7
Before one years 44.5   0.2
Current 125.9   0.0
Revolving Loans 22.1   9.5
Revolving loans converted to term loans 0.0   0.0
Total 2,061.0   1,630.1
Retail loans | Commercial vehicle and construction equipment finance      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 10,522.3   12,612.6
Before four years 8,530.3   17,986.3
Before three years 64,391.4   36,439.4
Before two years 270,486.3   159,942.5
Before one years 516,036.3   461,582.2
Current 741,055.6   723,662.0
Revolving Loans 251,171.4   207,377.9
Revolving loans converted to term loans 0.0   0.0
Total 1,862,193.6   1,619,602.9
Retail loans | Commercial vehicle and construction equipment finance | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,242.2   1,547.1
Before four years 853.3   2,379.5
Before three years 2,499.5   1,597.7
Before two years 4,319.4   2,231.2
Before one years 2,794.0   1,935.0
Current 2,555.9   104.3
Revolving Loans 6.0   1.3
Revolving loans converted to term loans 0.0   0.0
Total 14,270.3   9,796.1
Retail loans | Housing loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,513,385.3   1,373,409.5
Before four years 596,492.3   572,124.7
Before three years 917,561.9   741,491.1
Before two years 1,189,865.8   1,175,303.7
Before one years 1,630,476.8   1,480,508.1
Current 1,293,396.9   1,650,330.9
Revolving Loans 0.0   0.0
Revolving loans converted to term loans 0.0   0.0
Total 7,141,179.0   6,993,168.0
Retail loans | Housing loans | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 3,091.7   11,133.4
Before four years 477.1   759.5
Before three years 79.8   105.6
Before two years 5.1   7.5
Before one years 23.0   7.2
Current 0.0   0.0
Revolving Loans 0.0   0.0
Revolving loans converted to term loans 0.0   0.0
Total 3,676.7   12,013.2
Retail loans | Other retail loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 21,124.9   12,925.7
Before four years 10,481.2   11,430.8
Before three years 31,368.4   20,252.9
Before two years 90,208.6   56,151.7
Before one years 340,639.1   204,911.8
Current 680,143.7   724,236.3
Revolving Loans 1,409,436.2   1,242,122.0
Revolving loans converted to term loans 0.0   0.0
Total 2,583,402.1   2,272,031.2
Retail loans | Other retail loans | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 4,082.3   1,857.3
Before four years 956.3   4,453.7
Before three years 1,123.0   1,567.6
Before two years 4,228.7   2,088.9
Before one years 3,590.0   3,505.0
Current 957.4   538.8
Revolving Loans 4,911.8   4,519.1
Revolving loans converted to term loans 0.0   0.0
Total 19,849.5   18,530.4
Retail loans | Performing | Auto loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 16,872.3   15,314.7
Before four years 38,368.9   40,203.8
Before three years 109,709.7   86,953.7
Before two years 261,060.2   198,895.3
Before one years 403,060.5   398,936.3
Current 611,564.6   540,605.2
Revolving Loans 93,911.1   82,616.1
Revolving loans converted to term loans 0.0   0.0
Total 1,534,547.3   1,363,525.1
Retail loans | Performing | Personal loans/Credit card      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 6,682.8   4,198.8
Before four years 19,129.5   28,112.1
Before three years 100,673.9   62,604.2
Before two years 320,434.6   237,689.5
Before one years 623,756.2   642,360.7
Current 1,238,873.6   1,192,606.3
Revolving Loans 661,166.9   560,472.3
Revolving loans converted to term loans 426,548.1   365,736.3
Total 3,397,265.6   3,093,780.2
Retail loans | Performing | Retail business banking      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 84,507.8   88,129.0
Before four years 59,255.0   62,739.9
Before three years 204,872.5   108,288.3
Before two years 402,892.1   317,668.3
Before one years 627,467.3   527,853.5
Current 769,923.2   701,602.8
Revolving Loans 2,750,841.8   2,348,199.0
Revolving loans converted to term loans 0.0   0.0
Total 4,899,759.7   4,154,480.8
Retail loans | Performing | Commercial vehicle and construction equipment finance      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 9,615.7   9,984.2
Before four years 7,142.1   16,357.7
Before three years 61,927.7   33,797.5
Before two years 263,199.8   156,354.0
Before one years 507,988.5   456,722.6
Current 739,656.0   722,457.1
Revolving Loans 244,293.4   202,366.2
Revolving loans converted to term loans 0.0   0.0
Total 1,833,823.2   1,598,039.3
Retail loans | Performing | Housing loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,488,044.3   1,351,187.2
Before four years 590,450.9   565,617.9
Before three years 910,615.5   735,921.2
Before two years 1,182,559.1   1,170,433.9
Before one years 1,626,523.9   1,476,703.5
Current 1,292,823.4   1,649,591.6
Revolving Loans 0.0   0.0
Revolving loans converted to term loans 0.0   0.0
Total 7,091,017.1   6,949,455.3
Retail loans | Performing | Other retail loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 15,220.9   9,040.5
Before four years 9,225.1   9,538.8
Before three years 29,591.7   18,091.4
Before two years 84,335.1   53,746.1
Before one years 312,070.2   200,858.5
Current 676,203.4   721,107.1
Revolving Loans 1,366,920.4   1,198,128.8
Revolving loans converted to term loans 0.0   0.0
Total 2,493,566.8   2,210,511.2
Retail loans | Non-performing | Auto loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 1,124.3   1,771.7
Before four years 1,172.5   1,908.9
Before three years 2,224.1   1,908.6
Before two years 4,143.9   2,729.8
Before one years 3,631.6   3,204.6
Current 1,052.2   779.7
Revolving Loans 3,011.5   2,694.7
Revolving loans converted to term loans 0.0   0.0
Total 16,360.1   14,998.0
Retail loans | Non-performing | Personal loans/Credit card      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 543.1   726.8
Before four years 966.9   1,486.5
Before three years 1,807.2   1,668.2
Before two years 4,805.9   3,127.9
Before one years 5,657.0   5,912.5
Current 2,389.8   2,544.9
Revolving Loans 11,767.8   9,674.2
Revolving loans converted to term loans 990.0   325.5
Total 28,927.7   25,466.5
Retail loans | Non-performing | Retail business banking      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 5,779.0   8,083.4
Before four years 3,713.2   1,933.2
Before three years 3,449.7   3,454.1
Before two years 3,293.4   2,118.8
Before one years 1,546.1   851.1
Current 191.8   135.0
Revolving Loans 49,957.1   36,779.8
Revolving loans converted to term loans 0.0   0.0
Total 67,930.3   53,355.4
Retail loans | Non-performing | Commercial vehicle and construction equipment finance      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 906.6   2,628.4
Before four years 1,388.2   1,628.6
Before three years 2,463.7   2,641.9
Before two years 7,286.5   3,588.5
Before one years 8,047.8   4,859.6
Current 1,399.6   1,204.9
Revolving Loans 6,878.0   5,011.7
Revolving loans converted to term loans 0.0   0.0
Total 28,370.4   21,563.6
Retail loans | Non-performing | Housing loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 25,341.0   22,222.3
Before four years 6,041.4   6,506.8
Before three years 6,946.4   5,569.9
Before two years 7,306.7   4,869.8
Before one years 3,952.9   3,804.6
Current 573.5   739.3
Revolving Loans 0.0   0.0
Revolving loans converted to term loans 0.0   0.0
Total 50,161.9   43,712.7
Retail loans | Non-performing | Other retail loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 5,904.0   3,885.2
Before four years 1,256.1   1,892.0
Before three years 1,776.7   2,161.5
Before two years 5,873.5   2,405.6
Before one years 28,568.9   4,053.3
Current 3,940.3   3,129.2
Revolving Loans 42,515.8   43,993.2
Revolving loans converted to term loans 0.0   0.0
Total 89,835.3   61,520.0
Wholesale loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 332,556.5 3,892.7 246,913.8
Before four years 414,914.8 4,856.8 268,724.2
Before three years 694,205.1 8,126.0 592,298.3
Before two years 877,711.1 10,274.0 980,330.6
Before one years 1,512,860.8 17,708.8 1,222,234.9
Current 1,397,420.9 16,357.5 2,090,544.0
Revolving Loans 1,877,576.5 21,978.0 1,801,593.5
Total 7,107,245.7 83,193.8 7,202,639.3
Wholesale loans | Write off      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 10.9 0.1 2,585.0
Before four years 2.1 0.0 264.3
Before three years 0.0 0.0 0.0
Before two years 0.0 0.0 0.0
Before one years 708.0 8.3 481.5
Current 0.0 0.0 0.0
Revolving Loans 3,478.2 40.7 244.4
Total 4,199.2 $ 49.1 3,575.2
Wholesale loans | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 303,812.7   186,460.1
Before four years 393,131.7   264,241.1
Before three years 674,953.6   560,195.2
Before two years 863,574.4   957,023.5
Before one years 1,483,506.6   1,200,992.0
Current 1,395,844.6   2,071,787.5
Revolving Loans 1,841,034.8   1,773,221.5
Total 6,955,858.4   7,013,920.9
Wholesale loans | Labelled      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 2,577.7   14,723.3
Before four years 9,883.5   757.2
Before three years 11,399.0   17,488.3
Before two years 12,831.6   14,588.1
Before one years 5,985.4   16,225.0
Current 1,576.3   11,623.4
Revolving Loans 12,808.6   6,485.4
Total 57,062.1   81,890.7
Wholesale loans | Non-performing      
Financing Receivable, Credit Quality Indicator [Line Items]      
Prior 26,166.1   45,730.4
Before four years 11,899.6   3,725.9
Before three years 7,852.5   14,614.8
Before two years 1,305.1   8,719.0
Before one years 23,368.8   5,017.9
Current 0.0   7,133.1
Revolving Loans 23,733.1   21,886.6
Total ₨ 94,325.2   ₨ 106,827.7