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Summary of Gross Loans Origination and Internally Assigned Credit Risk Ratings (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2022 INR (₨) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 INR (₨)
--- | --- | --- | ---
Retail Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | ₨ 378,896.1 | $ 4,994.0 | ₨ 325,017.0
2017 | 259,729.3 | 3,423.3 | 223,465.6
2018 | 496,836.7 | 6,548.5 | 460,687.0
2019 | 808,003.9 | 10,649.8 | 875,535.7
2020 | 1,230,531.7 | 16,218.9 | 1,399,092.4
2021 | 3,233,675.4 | 42,621.3 | 2,258,375.6
Revolving Loans | 2,560,650.4 | 33,750.5 | 1,961,778.3
Revolving loans converted to term loans | 342,211.2 | 4,510.5 | 324,881.0
Total | 9,310,534.7 | 122,716.9 | 7,828,832.6
Retail Loans | Auto loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 9,312.3 |  | 5,335.9
2017 | 45,501.4 |  | 32,241.1
2018 | 94,617.1 |  | 105,207.5
2019 | 175,929.5 |  | 177,420.0
2020 | 255,269.2 |  | 274,790.0
2021 | 455,776.3 |  | 363,780.1
Revolving Loans | 6,387.2 |  | 5,278.6
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 1,042,793.0 |  | 964,053.2
Retail Loans | Personal loans/Credit card |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 1,576.1 |  | 732.4
2017 | 15,231.0 |  | 9,218.8
2018 | 71,661.5 |  | 51,802.5
2019 | 233,528.5 |  | 187,236.5
2020 | 340,457.8 |  | 495,307.5
2021 | 948,999.7 |  | 639,169.9
Revolving Loans | 388,306.0 |  | 334,378.6
Revolving loans converted to term loans | 342,211.2 |  | 324,881.0
Total | 2,341,971.8 |  | 2,042,727.2
Retail Loans | Retail Business Banking |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 56,009.1 |  | 38,773.6
2017 | 82,695.8 |  | 52,290.8
2018 | 100,790.9 |  | 126,526.8
2019 | 154,562.7 |  | 149,339.8
2020 | 309,553.8 |  | 211,462.3
2021 | 570,099.2 |  | 481,571.6
Revolving Loans | 1,343,375.6 |  | 947,881.0
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 2,617,087.1 |  | 2,007,845.9
Retail Loans | Commercial vehicle and construction equipment finance |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 2,048.2 |  | 673.7
2017 | 17,414.0 |  | 7,128.8
2018 | 75,642.7 |  | 49,163.8
2019 | 133,233.7 |  | 157,544.7
2020 | 189,444.8 |  | 224,501.8
2021 | 427,085.4 |  | 289,039.2
Revolving Loans | 106,197.2 |  | 77,277.8
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 951,066.0 |  | 805,329.8
Retail Loans | Housing loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 302,700.9 |  | 274,468.7
2017 | 86,186.2 |  | 112,841.5
2018 | 128,811.4 |  | 105,813.9
2019 | 48,992.2 |  | 153,430.6
2020 | 513.4 |  | 55,641.9
2021 | 263,678.3 |  | 38.9
Revolving Loans | 0.0 |  | 0.0
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 830,882.4 |  | 702,235.5
Retail Loans | Other Retail |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 7,249.5 |  | 5,032.7
2017 | 12,700.9 |  | 9,744.6
2018 | 25,313.1 |  | 22,172.5
2019 | 61,757.3 |  | 50,564.1
2020 | 135,292.7 |  | 137,388.9
2021 | 568,036.5 |  | 484,775.9
Revolving Loans | 716,384.4 |  | 596,962.3
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 1,526,734.4 |  | 1,306,641.0
Retail Loans | Performing | Auto loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 8,466.2 |  | 4,599.0
2017 | 42,634.8 |  | 30,174.9
2018 | 89,161.9 |  | 99,159.5
2019 | 169,606.1 |  | 168,159.1
2020 | 252,295.7 |  | 266,277.0
2021 | 455,114.6 |  | 362,747.1
Revolving Loans | 5,072.1 |  | 4,460.3
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 1,022,351.4 |  | 935,576.9
Retail Loans | Performing | Personal loans/Credit card |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 1,374.4 |  | 613.8
2017 | 14,320.8 |  | 8,617.1
2018 | 67,477.1 |  | 48,658.4
2019 | 225,561.4 |  | 178,532.3
2020 | 336,526.1 |  | 483,925.8
2021 | 947,277.0 |  | 638,007.4
Revolving Loans | 381,900.4 |  | 326,118.9
Revolving loans converted to term loans | 339,477.1 |  | 321,227.4
Total | 2,313,914.3 |  | 2,005,701.1
Retail Loans | Performing | Retail Business Banking |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 52,347.2 |  | 35,189.0
2017 | 78,959.8 |  | 49,573.1
2018 | 97,361.4 |  | 121,663.7
2019 | 151,964.0 |  | 145,473.9
2020 | 306,673.0 |  | 209,578.9
2021 | 569,687.0 |  | 480,518.2
Revolving Loans | 1,324,274.5 |  | 934,520.2
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 2,581,266.9 |  | 1,976,517.0
Retail Loans | Performing | Commercial vehicle and construction equipment finance |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 1,837.4 |  | 517.8
2017 | 16,022.5 |  | 6,292.2
2018 | 69,418.2 |  | 44,766.4
2019 | 125,223.1 |  | 146,432.4
2020 | 185,561.0 |  | 214,342.4
2021 | 426,434.1 |  | 287,953.1
Revolving Loans | 101,478.2 |  | 73,010.2
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 925,974.5 |  | 773,314.5
Retail Loans | Performing | Housing loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 301,103.3 |  | 272,061.4
2017 | 85,682.1 |  | 111,758.9
2018 | 127,339.2 |  | 105,069.4
2019 | 46,798.3 |  | 152,564.7
2020 | 0.6 |  | 55,570.3
2021 | 263,480.5 |  | 38.9
Revolving Loans | 0.0 |  | 0.0
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 824,404.0 |  | 697,063.6
Retail Loans | Performing | Other Retail |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 4,260.4 |  | 2,406.7
2017 | 11,266.3 |  | 8,530.0
2018 | 20,843.1 |  | 20,090.5
2019 | 51,074.6 |  | 45,854.0
2020 | 131,647.7 |  | 129,946.8
2021 | 567,032.4 |  | 483,241.9
Revolving Loans | 691,150.7 |  | 576,986.7
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 1,477,275.2 |  | 1,267,056.6
Retail Loans | Non-performing | Auto loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 846.1 |  | 736.9
2017 | 2,866.6 |  | 2,066.2
2018 | 5,455.2 |  | 6,048.0
2019 | 6,323.4 |  | 9,260.9
2020 | 2,973.5 |  | 8,513.0
2021 | 661.7 |  | 1,033.0
Revolving Loans | 1,315.1 |  | 818.3
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 20,441.6 |  | 28,476.3
Retail Loans | Non-performing | Personal loans/Credit card |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 201.7 |  | 118.6
2017 | 910.2 |  | 601.7
2018 | 4,184.4 |  | 3,144.1
2019 | 7,967.1 |  | 8,704.2
2020 | 3,931.7 |  | 11,381.7
2021 | 1,722.7 |  | 1,162.5
Revolving Loans | 6,405.6 |  | 8,259.7
Revolving loans converted to term loans | 2,734.1 |  | 3,653.6
Total | 28,057.5 |  | 37,026.1
Retail Loans | Non-performing | Retail Business Banking |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 3,661.9 |  | 3,584.6
2017 | 3,736.0 |  | 2,717.7
2018 | 3,429.5 |  | 4,863.1
2019 | 2,598.7 |  | 3,865.9
2020 | 2,880.8 |  | 1,883.4
2021 | 412.2 |  | 1,053.4
Revolving Loans | 19,101.1 |  | 13,360.8
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 35,820.2 |  | 31,328.9
Retail Loans | Non-performing | Commercial vehicle and construction equipment finance |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 210.8 |  | 155.9
2017 | 1,391.5 |  | 836.6
2018 | 6,224.5 |  | 4,397.4
2019 | 8,010.6 |  | 11,112.3
2020 | 3,883.8 |  | 10,159.4
2021 | 651.3 |  | 1,086.1
Revolving Loans | 4,719.0 |  | 4,267.6
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 25,091.5 |  | 32,015.3
Retail Loans | Non-performing | Housing loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 1,597.6 |  | 2,407.3
2017 | 504.1 |  | 1,082.6
2018 | 1,472.2 |  | 744.5
2019 | 2,193.9 |  | 865.9
2020 | 512.8 |  | 71.6
2021 | 197.8 |  | 0.0
Revolving Loans | 0.0 |  | 0.0
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 6,478.4 |  | 5,171.9
Retail Loans | Non-performing | Other Retail |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 2,989.1 |  | 2,626.0
2017 | 1,434.6 |  | 1,214.6
2018 | 4,470.0 |  | 2,082.0
2019 | 10,682.7 |  | 4,710.1
2020 | 3,645.0 |  | 7,442.1
2021 | 1,004.1 |  | 1,534.0
Revolving Loans | 25,233.7 |  | 19,975.6
Revolving loans converted to term loans | 0.0 |  | 0.0
Total | 49,459.2 |  | 39,584.4
Wholesale loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 5,859.4 | 77.2 | 4,385.2
2017 | 194,108.7 | 2,558.4 | 3,416.6
2018 | 206,701.5 | 2,724.4 | 317,027.8
2019 | 423,342.8 | 5,579.8 | 339,789.6
2020 | 1,011,211.4 | 13,328.2 | 572,780.0
2021 | 2,245,121.3 | 29,591.7 | 2,013,535.3
Revolving Loans | 1,012,664.2 | 13,347.4 | 963,950.8
Total | 5,099,009.3 | $ 67,207.2 | 4,214,885.3
Wholesale loans | Pass |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 5,289.7 |  | 3,939.4
2017 | 186,145.4 |  | 3,332.3
2018 | 195,703.7 |  | 298,631.5
2019 | 421,349.1 |  | 324,816.0
2020 | 1,006,687.4 |  | 568,907.1
2021 | 2,232,372.3 |  | 2,007,206.0
Revolving Loans | 984,145.8 |  | 930,417.0
Total | 5,031,693.4 |  | 4,137,249.3
Wholesale loans | Labelled |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 0.0 |  | 0.0
2017 | 3,297.2 |  | 0.0
2018 | 5,164.1 |  | 7,503.2
2019 | 1,632.6 |  | 10,194.9
2020 | 4,045.0 |  | 2,427.6
2021 | 11,447.4 |  | 4,073.6
Revolving Loans | 9,808.5 |  | 13,257.2
Total | 35,394.8 |  | 37,456.5
Wholesale loans | Non-performing |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 569.7 |  | 445.8
2017 | 4,666.1 |  | 84.3
2018 | 5,833.7 |  | 10,893.1
2019 | 361.1 |  | 4,778.7
2020 | 479.0 |  | 1,445.3
2021 | 1,301.6 |  | 2,255.7
Revolving Loans | 18,709.9 |  | 20,276.6
Total | ₨ 31,921.1 |  | ₨ 40,179.5

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