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v3.25.2

Subsequent Events - Additional Information (Detail) - INR (₨) ₨ / shares in Units, ₨ in Millions, shares in Millions | Jul. 02, 2025 | Apr. 19, 2025 | Oct. 19, 2024 | Mar. 31, 2025 | Mar. 31, 2024
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Subsequent Event [Line Items] |  |  |  |  |
Common stock par or stated value per share |  |  |  | ₨ 1 | ₨ 1
HDB Financial Services Limited [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Maximum period for listing of so called upper layer designation |  |  | 3 years |  |
IPO [Member] | HDB Financial Services Limited [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Common stock par or stated value per share |  |  | ₨ 10 |  |
Initial public offering, authorized amount |  |  | ₨ 100,000.0 |  |
Subsequent Event [Member] | IPO [Member] | HDB Financial Services Limited [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Sale of stock, consideration received on transaction | ₨ 100,000.0 |  |  |  |
Sale of stock number of shares issued in transaction | 135.1 |  |  |  |
Sale of stock price per share | ₨ 740 |  |  |  |
Sale of stock consideration received on transaction assigned to subsidiary | ₨ 25,000.0 |  |  |  |
Sale of stock percentage of ownership after transaction | 74.70% |  |  |  |
O 2025 A Dividends [Member] | Subsequent Event [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Dividend paid, per share amount |  | ₨ 22 |  |  |
Dividend paid, total amount |  | ₨ 168,348.9 |  |  |

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- Definition Initial public offering, authorized amount. + References No definition available. + Details
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- Definition Maximum period for listing of so called upper layer designation. + References No definition available. + Details
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- Definition Sale of stock consideration received on transaction assigned to subsidiary. + References No definition available. + Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition Cash received on stock transaction after deduction of issuance costs. + References No definition available. + Details
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- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
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- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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- Details
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- Details
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- Details
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