XML 85 R72.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Portfolio of Available for Sale Securities (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2016 INR (₨) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 INR (₨)
--- | --- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | ₨ 1,862,550.9 | $ 28,114.0 | ₨ 1,489,085.4
Gross Unrealized Gains | 16,967.7 | 256.1 | 17,201.5
Gross Unrealized Losses | 834.2 | 12.6 | 1,874.1
Fair Value | 1,878,684.4 | 28,357.5 | 1,504,412.8
Debt securities, other than asset and mortgage-backed securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 1,841,714.5 |  | 1,463,503.0
Gross Unrealized Gains | 16,314.0 |  | 16,330.3
Gross Unrealized Losses | 403.4 |  | 1,421.6
Fair Value | 1,857,625.1 | $ 28,039.7 | 1,478,411.7
Debt securities, other than asset and mortgage-backed securities | Government of India securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 1,443,404.6 |  | 1,151,520.7
Gross Unrealized Gains | 12,828.9 |  | 13,843.3
Gross Unrealized Losses | 168.0 |  | 1,242.7
Fair Value | 1,456,065.5 |  | 1,164,121.3
Debt securities, other than asset and mortgage-backed securities | State government securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 92,613.3 |  | 54,134.6
Gross Unrealized Gains | 3,149.3 |  | 2,074.4
Gross Unrealized Losses | 0.0 |  | 0.0
Fair Value | 95,762.6 |  | 56,209.0
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 297,154.7 |  | 194,992.4
Gross Unrealized Gains | 318.2 |  | 243.9
Gross Unrealized Losses | 231.9 |  | 177.4
Fair Value | 297,241.0 |  | 195,058.9
Debt securities, other than asset and mortgage-backed securities | Other corporate/financial institution bonds |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 8,541.9 |  | 6,555.1
Gross Unrealized Gains | 17.6 |  | 83.3
Gross Unrealized Losses | 3.5 |  | 1.5
Fair Value | 8,556.0 |  | 6,636.9
Debt securities, other than asset and mortgage-backed securities | Certificates of Deposit |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost |  |  | 56,300.2
Gross Unrealized Gains |  |  | 85.4
Gross Unrealized Losses |  |  | 0.0
Fair Value |  |  | 56,385.6
Mortgage-backed securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 651.4 |  | 1,282.0
Gross Unrealized Gains | 17.6 |  | 50.1
Gross Unrealized Losses | 1.3 |  | 0.0
Fair Value | 667.7 |  | 1,332.1
Asset-backed securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 19,417.4 |  | 23,512.3
Gross Unrealized Gains | 191.9 |  | 223.2
Gross Unrealized Losses | 429.5 |  | 452.2
Fair Value | 19,179.8 |  | 23,283.3
Other securities (including mutual fund units) |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 767.6 |  | 788.1
Gross Unrealized Gains | 444.2 |  | 597.9
Gross Unrealized Losses | 0.0 |  | 0.3
Fair Value | 1,211.8 |  | 1,385.7
Securities with gross unrealized losses |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Fair Value | 304,916.5 |  | 469,004.0
Securities with gross unrealized gains |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Fair Value | ₨ 1,573,767.9 |  | ₨ 1,035,408.8

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hdb_DebtSecuritiesOtherThanAssetAndMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=hdb_GovernmentOfIndiaSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=hdb_SecuritiesIssuedByStateGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=hdb_CreditSubstitutesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=hdb_OtherCorporateFinancialInstitutionBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hdb_OtherSecuritiesIncludingMutualFundUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hdb_AvailableForSaleSecuritiesGrossUnrealizedLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=hdb_AvailableForSaleSecuritiesGrossUnrealizedGainMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |