Organization record
TATA COMMUNICATIONS LTD
All evidence-backed facts for this organization, identity resolved across official registers.
Facts on record
Newest first; every row links to its evidence page.
| Fact | Value | Period | Source |
|---|---|---|---|
| accounts_payable | {"amount": 556000000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_payable | {"amount": 558000000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_payable | {"unit": "INR", "value": 24758000000, "concept": "us-gaap:AccountsPayableCurrent"} | 2011-03-31 | sec_edgar |
| accounts_receivable | {"amount": 589000000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD" | 2013-03-31 | sec_edgar |
| accounts_receivable | {"amount": 515000000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD" | 2012-03-31 | sec_edgar |
| accounts_receivable | {"unit": "INR", "value": 19226000000, "concept": "us-gaap:AccountsReceivableNetCurrent"} | 2011-03-31 | sec_edgar |
| capex | {"amount": 293000000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "cu | 2013-03-31 | sec_edgar |
| capex | {"amount": 356000000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "cu | 2012-03-31 | sec_edgar |
| capex | {"unit": "INR", "value": 14573000000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAn | 2011-03-31 | sec_edgar |
| capex | {"unit": "INR", "value": 24180000000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAn | 2010-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 105000000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2013-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 51000000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2012-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 134000000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2011-03-31 | sec_edgar |
| cash_and_equivalents | {"unit": "INR", "value": 2389000000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingV | 2010-03-31 | sec_edgar |
| cash_and_equivalents | {"unit": "INR", "value": 5050000000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingV | 2009-03-31 | sec_edgar |
| cashflow_financing | {"amount": 191000000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cu | 2013-03-31 | sec_edgar |
| cashflow_financing | {"amount": 158000000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cu | 2012-03-31 | sec_edgar |
| cashflow_financing | {"unit": "INR", "value": 7847000000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingA | 2011-03-31 | sec_edgar |
| cashflow_financing | {"unit": "INR", "value": 4186000000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingA | 2010-03-31 | sec_edgar |
| cashflow_investing | {"amount": -449000000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "c | 2013-03-31 | sec_edgar |
| cashflow_investing | {"amount": -412000000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "c | 2012-03-31 | sec_edgar |
| cashflow_investing | {"unit": "INR", "value": -15024000000, "concept": "us-gaap:NetCashProvidedByUsedInInvestin | 2011-03-31 | sec_edgar |
| cashflow_investing | {"unit": "INR", "value": -21604000000, "concept": "us-gaap:NetCashProvidedByUsedInInvestin | 2010-03-31 | sec_edgar |
| cashflow_operating | {"amount": 315000000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cu | 2013-03-31 | sec_edgar |
| cashflow_operating | {"amount": 161000000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cu | 2012-03-31 | sec_edgar |
| cashflow_operating | {"unit": "INR", "value": 11678000000, "concept": "us-gaap:NetCashProvidedByUsedInOperating | 2011-03-31 | sec_edgar |
| cashflow_operating | {"unit": "INR", "value": 14413000000, "concept": "us-gaap:NetCashProvidedByUsedInOperating | 2010-03-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesIssued"} | 2013-03-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesIssued"} | 2012-03-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesIssued"} | 2011-03-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2013-03-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2012-03-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 285000000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2011-03-31 | sec_edgar |
| cost_of_revenue | {"amount": 1766000000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2013-03-31 | sec_edgar |
| cost_of_revenue | {"amount": 1530000000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-03-31 | sec_edgar |
| cost_of_revenue | {"unit": "INR", "value": 67877000000, "concept": "us-gaap:CostOfRevenue"} | 2011-03-31 | sec_edgar |
| cost_of_revenue | {"unit": "INR", "value": 62246000000, "concept": "us-gaap:CostOfRevenue"} | 2010-03-31 | sec_edgar |
| current_assets | {"amount": 1007000000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| current_assets | {"amount": 721000000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| current_assets | {"unit": "INR", "value": 31809000000, "concept": "us-gaap:AssetsCurrent"} | 2011-03-31 | sec_edgar |
| current_liabilities | {"amount": 1603000000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| current_liabilities | {"amount": 1333000000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| current_liabilities | {"unit": "INR", "value": 64891000000, "concept": "us-gaap:LiabilitiesCurrent"} | 2011-03-31 | sec_edgar |
| debt_current | {"amount": 580000000, "concept": "us-gaap:DebtCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| debt_current | {"amount": 317000000, "concept": "us-gaap:DebtCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| debt_current | {"unit": "INR", "value": 22727000000, "concept": "us-gaap:DebtCurrent"} | 2011-03-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 285000000} | 2013-03-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 285000000} | 2012-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": -0.41, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2013-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.23, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": -28.4, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2011-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": -13.46, "concept": "us-gaap:EarningsPerShareBasic", "currency" | 2010-03-31 | sec_edgar |
| goodwill | {"amount": 498000000, "concept": "us-gaap:Goodwill", "currency": "USD"} | 2013-03-31 | sec_edgar |
| goodwill | {"amount": 540000000, "concept": "us-gaap:Goodwill", "currency": "USD"} | 2012-03-31 | sec_edgar |
| goodwill | {"unit": "INR", "value": 6361000000, "concept": "us-gaap:Goodwill"} | 2011-03-31 | sec_edgar |
| income_tax_expense | {"amount": 37000000, "concept": "us-gaap:IncomeTaxExpenseBenefit", "currency": "USD"} | 2013-03-31 | sec_edgar |
| income_tax_expense | {"amount": 101000000, "concept": "us-gaap:IncomeTaxExpenseBenefit", "currency": "USD"} | 2012-03-31 | sec_edgar |
| income_tax_expense | {"unit": "INR", "value": 765000000, "concept": "us-gaap:IncomeTaxExpenseBenefit"} | 2011-03-31 | sec_edgar |
| income_tax_expense | {"unit": "INR", "value": -969000000, "concept": "us-gaap:IncomeTaxExpenseBenefit"} | 2010-03-31 | sec_edgar |
| industry_sic | {"code": "4813", "scheme": "SIC", "description": "Telephone Communications (No Radioteleph | sec_edgar | |
| intangible_assets | {"amount": 105000000, "concept": "us-gaap:IntangibleAssetsNetExcludingGoodwill", "currency | 2013-03-31 | sec_edgar |
| intangible_assets | {"amount": 119000000, "concept": "us-gaap:IntangibleAssetsNetExcludingGoodwill", "currency | 2012-03-31 | sec_edgar |
| intangible_assets | {"unit": "INR", "value": 2833000000, "concept": "us-gaap:IntangibleAssetsNetExcludingGoodw | 2011-03-31 | sec_edgar |
| interest_expense | {"amount": 145000000, "concept": "us-gaap:InterestExpense", "currency": "USD"} | 2013-03-31 | sec_edgar |
| interest_expense | {"amount": 149000000, "concept": "us-gaap:InterestExpense", "currency": "USD"} | 2012-03-31 | sec_edgar |
| interest_expense | {"unit": "INR", "value": 4088000000, "concept": "us-gaap:InterestExpense"} | 2011-03-31 | sec_edgar |
| interest_expense | {"unit": "INR", "value": 4188000000, "concept": "us-gaap:InterestExpense"} | 2010-03-31 | sec_edgar |
| long_term_debt | {"amount": 2154000000, "concept": "us-gaap:LongTermDebt", "currency": "USD"} | 2013-03-31 | sec_edgar |
| long_term_debt | {"unit": "INR", "value": 104391000000, "concept": "us-gaap:LongTermDebt"} | 2012-03-31 | sec_edgar |
| long_term_debt | {"unit": "INR", "value": 46100000000, "concept": "us-gaap:LongTermDebt"} | 2011-03-31 | sec_edgar |
| long_term_debt_current | {"amount": 383000000, "concept": "us-gaap:LongTermDebtCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| long_term_debt_current | {"unit": "INR", "value": 5061000000, "concept": "us-gaap:LongTermDebtCurrent"} | 2012-03-31 | sec_edgar |
| long_term_debt_noncurrent | {"amount": 1771000000, "concept": "us-gaap:LongTermDebtNoncurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| long_term_debt_noncurrent | {"unit": "INR", "value": 99330000000, "concept": "us-gaap:LongTermDebtNoncurrent"} | 2012-03-31 | sec_edgar |
| marketable_securities | {"amount": 104000000, "concept": "us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent" | 2013-03-31 | sec_edgar |
| net_income | {"amount": -116000000, "concept": "us-gaap:NetIncomeLoss", "currency": "USD"} | 2013-03-31 | sec_edgar |
| net_income | {"amount": 65000000, "concept": "us-gaap:NetIncomeLoss", "currency": "USD"} | 2012-03-31 | sec_edgar |
| net_income | {"unit": "INR", "value": -8095000000, "concept": "us-gaap:NetIncomeLoss"} | 2011-03-31 | sec_edgar |
| net_income | {"unit": "INR", "value": -3836000000, "concept": "us-gaap:NetIncomeLoss"} | 2010-03-31 | sec_edgar |
| operating_expenses | {"amount": 1390000000, "concept": "us-gaap:OperatingExpenses", "currency": "USD"} | 2013-03-31 | sec_edgar |
| operating_expenses | {"amount": 1208000000, "concept": "us-gaap:OperatingExpenses", "currency": "USD"} | 2012-03-31 | sec_edgar |
| operating_expenses | {"unit": "INR", "value": 46327000000, "concept": "us-gaap:OperatingExpenses"} | 2011-03-31 | sec_edgar |
| operating_expenses | {"unit": "INR", "value": 45397000000, "concept": "us-gaap:OperatingExpenses"} | 2010-03-31 | sec_edgar |
| operating_income | {"amount": -5000000, "concept": "us-gaap:OperatingIncomeLoss", "currency": "USD"} | 2013-03-31 | sec_edgar |
| operating_income | {"amount": 11000000, "concept": "us-gaap:OperatingIncomeLoss", "currency": "USD"} | 2012-03-31 | sec_edgar |
| operating_income | {"unit": "INR", "value": -364000000, "concept": "us-gaap:OperatingIncomeLoss"} | 2011-03-31 | sec_edgar |
| operating_income | {"unit": "INR", "value": -1563000000, "concept": "us-gaap:OperatingIncomeLoss"} | 2010-03-31 | sec_edgar |
| ppe_net | {"amount": 2564000000, "concept": "us-gaap:PropertyPlantAndEquipmentNet", "currency": "USD | 2013-03-31 | sec_edgar |
| ppe_net | {"amount": 2772000000, "concept": "us-gaap:PropertyPlantAndEquipmentNet", "currency": "USD | 2012-03-31 | sec_edgar |
| ppe_net | {"unit": "INR", "value": 107838000000, "concept": "us-gaap:PropertyPlantAndEquipmentNet"} | 2011-03-31 | sec_edgar |
| pretax_income | {"amount": -94000000, "concept": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTa | 2013-03-31 | sec_edgar |
| pretax_income | {"amount": 103000000, "concept": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTa | 2012-03-31 | sec_edgar |
| pretax_income | {"unit": "INR", "value": -1681000000, "concept": "us-gaap:IncomeLossFromContinuingOperatio | 2011-03-31 | sec_edgar |
| pretax_income | {"unit": "INR", "value": -1383000000, "concept": "us-gaap:IncomeLossFromContinuingOperatio | 2010-03-31 | sec_edgar |
| profit_loss | {"amount": -137000000, "concept": "us-gaap:ProfitLoss", "currency": "USD"} | 2013-03-31 | sec_edgar |
| profit_loss | {"amount": -19000000, "concept": "us-gaap:ProfitLoss", "currency": "USD"} | 2012-03-31 | sec_edgar |
| profit_loss | {"unit": "INR", "value": -8082000000, "concept": "us-gaap:ProfitLoss"} | 2011-03-31 | sec_edgar |
| profit_loss | {"unit": "INR", "value": -3824000000, "concept": "us-gaap:ProfitLoss"} | 2010-03-31 | sec_edgar |
| retained_earnings | {"amount": 306000000, "concept": "us-gaap:RetainedEarningsAccumulatedDeficit", "currency": | 2013-03-31 | sec_edgar |
| retained_earnings | {"amount": 463000000, "concept": "us-gaap:RetainedEarningsAccumulatedDeficit", "currency": | 2012-03-31 | sec_edgar |
| retained_earnings | {"unit": "INR", "value": 20807000000, "concept": "us-gaap:RetainedEarningsAccumulatedDefic | 2011-03-31 | sec_edgar |
| revenue | {"amount": 1469000000, "concept": "us-gaap:SalesRevenueNet", "currency": "USD"} | 2013-03-31 | sec_edgar |
| revenue | {"unit": "INR", "value": 65867000000, "concept": "us-gaap:SalesRevenueNet"} | 2012-03-31 | sec_edgar |
| revenue | {"unit": "INR", "value": 48859000000, "concept": "us-gaap:SalesRevenueNet"} | 2011-03-31 | sec_edgar |
| revenue | {"unit": "INR", "value": 106080000000, "concept": "us-gaap:Revenues"} | 2010-03-31 | sec_edgar |
| shares_wavg_basic | {"unit": "shares", "value": 285000000, "concept": "us-gaap:WeightedAverageNumberOfSharesOu | 2013-03-31 | sec_edgar |
| shares_wavg_basic | {"unit": "shares", "value": 285000000, "concept": "us-gaap:WeightedAverageNumberOfSharesOu | 2012-03-31 | sec_edgar |
| shares_wavg_basic | {"unit": "shares", "value": 285000000, "concept": "us-gaap:WeightedAverageNumberOfSharesOu | 2011-03-31 | sec_edgar |
| shares_wavg_basic | {"unit": "shares", "value": 285000000, "concept": "us-gaap:WeightedAverageNumberOfSharesOu | 2010-03-31 | sec_edgar |
| short_term_investments | {"amount": 104000000, "concept": "us-gaap:ShortTermInvestments", "currency": "USD"} | 2013-03-31 | sec_edgar |
| short_term_investments | {"unit": "INR", "value": 916000000, "concept": "us-gaap:ShortTermInvestments"} | 2011-03-31 | sec_edgar |
| stockholders_equity | {"amount": 460000000, "concept": "us-gaap:StockholdersEquity", "currency": "USD"} | 2013-03-31 | sec_edgar |
| stockholders_equity | {"amount": 738000000, "concept": "us-gaap:StockholdersEquity", "currency": "USD"} | 2012-03-31 | sec_edgar |
| stockholders_equity | {"unit": "INR", "value": 39111000000, "concept": "us-gaap:StockholdersEquity"} | 2011-03-31 | sec_edgar |
| total_assets | {"amount": 4709000000, "concept": "us-gaap:Assets", "currency": "USD"} | 2013-03-31 | sec_edgar |
| total_assets | {"amount": 4854000000, "concept": "us-gaap:Assets", "currency": "USD"} | 2012-03-31 | sec_edgar |
| total_assets | {"unit": "INR", "value": 183743000000, "concept": "us-gaap:Assets"} | 2011-03-31 | sec_edgar |
| total_equity | {"amount": 478000000, "concept": "us-gaap:StockholdersEquityIncludingPortionAttributableTo | 2013-03-31 | sec_edgar |
| total_equity | {"amount": 769000000, "concept": "us-gaap:StockholdersEquityIncludingPortionAttributableTo | 2012-03-31 | sec_edgar |
| total_equity | {"unit": "INR", "value": 39179000000, "concept": "us-gaap:StockholdersEquityIncludingPorti | 2011-03-31 | sec_edgar |
| total_equity | {"unit": "INR", "value": 47319000000, "concept": "us-gaap:StockholdersEquityIncludingPorti | 2010-03-31 | sec_edgar |
| total_equity | {"unit": "INR", "value": 52517000000, "concept": "us-gaap:StockholdersEquityIncludingPorti | 2009-03-31 | sec_edgar |
| total_liabilities | {"amount": 4231000000, "concept": "us-gaap:Liabilities", "currency": "USD"} | 2013-03-31 | sec_edgar |
| total_liabilities | {"amount": 4085000000, "concept": "us-gaap:Liabilities", "currency": "USD"} | 2012-03-31 | sec_edgar |
| total_liabilities | {"unit": "INR", "value": 144564000000, "concept": "us-gaap:Liabilities"} | 2011-03-31 | sec_edgar |
| total_liabilities_and_equity | {"amount": 4709000000, "concept": "us-gaap:LiabilitiesAndStockholdersEquity", "currency": | 2013-03-31 | sec_edgar |
| total_liabilities_and_equity | {"amount": 4854000000, "concept": "us-gaap:LiabilitiesAndStockholdersEquity", "currency": | 2012-03-31 | sec_edgar |
| total_liabilities_and_equity | {"unit": "INR", "value": 183743000000, "concept": "us-gaap:LiabilitiesAndStockholdersEquit | 2011-03-31 | sec_edgar |
| xbrl:AccountsPayableCurrent | {"amount": 556000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccountsPayableCurrent | {"amount": 558000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AccountsPayableCurrent | {"unit": "INR", "value": 24758000000} | 2011-03-31 | sec_edgar |
| xbrl:AccountsPayableRelatedPartiesCurrent | {"unit": "INR", "value": 2324000000} | 2013-03-31 | sec_edgar |
| xbrl:AccountsPayableRelatedPartiesCurrent | {"unit": "INR", "value": 1182000000} | 2012-03-31 | sec_edgar |
| xbrl:AccountsPayableRelatedPartiesCurrent | {"unit": "INR", "value": 1250000000} | 2011-03-31 | sec_edgar |
| xbrl:AccountsReceivableNetCurrent | {"amount": 589000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccountsReceivableNetCurrent | {"amount": 515000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AccountsReceivableNetCurrent | {"unit": "INR", "value": 19226000000} | 2011-03-31 | sec_edgar |
| xbrl:AccountsReceivableRelatedPartiesCurrent | {"unit": "INR", "value": 1550000000} | 2013-03-31 | sec_edgar |
| xbrl:AccountsReceivableRelatedPartiesCurrent | {"unit": "INR", "value": 1472000000} | 2012-03-31 | sec_edgar |
| xbrl:AccountsReceivableRelatedPartiesCurrent | {"unit": "INR", "value": 1197000000} | 2011-03-31 | sec_edgar |
| xbrl:AccruedLiabilitiesAndOtherLiabilities | {"amount": 467000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccruedLiabilitiesAndOtherLiabilities | {"amount": 458000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AccruedLiabilitiesAndOtherLiabilities | {"unit": "INR", "value": 17406000000} | 2011-03-31 | sec_edgar |
| xbrl:AccruedSalariesCurrent | {"amount": 87000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccruedSalariesCurrent | {"unit": "INR", "value": 4287000000} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | {"amount": 1697000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | {"unit": "INR", "value": 72761000000} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax | {"unit": "INR", "value": 4000000} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | {"amount": 1000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | {"amount": 1000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | {"unit": "INR", "value": 291000000} | 2011-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | {"amount": -14000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | {"unit": "INR", "value": -238000000} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | {"amount": -156000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | {"unit": "INR", "value": -4098000000} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossNetOfTax | {"amount": -171000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossNetOfTax | {"amount": -86000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AccumulatedOtherComprehensiveIncomeLossNetOfTax | {"unit": "INR", "value": -316000000} | 2011-03-31 | sec_edgar |
| xbrl:AdditionalPaidInCapitalCommonStock | {"amount": 273000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AdditionalPaidInCapitalCommonStock | {"amount": 305000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AdditionalPaidInCapitalCommonStock | {"unit": "INR", "value": 15770000000} | 2011-03-31 | sec_edgar |
| xbrl:AdvancesToAffiliate | {"unit": "INR", "value": 445000000} | 2011-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivable | {"amount": 76000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivable | {"amount": 60000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivable | {"unit": "INR", "value": 2452000000} | 2011-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivable | {"unit": "INR", "value": 2502000000} | 2010-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableCurrent | {"unit": "INR", "value": 4157000000} | 2013-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableCurrent | {"unit": "INR", "value": 3267000000} | 2012-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableCurrent | {"unit": "INR", "value": 2452000000} | 2011-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | {"amount": 23000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | {"unit": "INR", "value": 1070000000} | 2012-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease | {"unit": "INR", "value": 974000000} | 2011-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableRecoveries | {"amount": 7000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableRecoveries | {"unit": "INR", "value": 423000000} | 2012-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableRecoveries | {"unit": "INR", "value": 490000000} | 2011-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableWriteOffs | {"amount": 1000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AllowanceForDoubtfulAccountsReceivableWriteOffs | {"unit": "INR", "value": 527000000} | 2011-03-31 | sec_edgar |
| xbrl:AmortizationOfIntangibleAssets | {"amount": 37000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AmortizationOfIntangibleAssets | {"unit": "INR", "value": 1548000000} | 2012-03-31 | sec_edgar |
| xbrl:AmortizationOfIntangibleAssets | {"unit": "INR", "value": 1072000000} | 2011-03-31 | sec_edgar |
| xbrl:AssetRetirementObligation | {"amount": 17000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AssetRetirementObligation | {"amount": 15000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AssetRetirementObligation | {"unit": "INR", "value": 632000000} | 2011-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationAccretionExpense | {"amount": 1000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationAccretionExpense | {"unit": "INR", "value": 24000000} | 2012-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationForeignCurrencyTranslation | {"amount": 1000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationForeignCurrencyTranslation | {"unit": "INR", "value": 94000000} | 2012-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationLiabilitiesIncurred | {"unit": "INR", "value": 29000000} | 2013-03-31 | sec_edgar |
| xbrl:AssetRetirementObligationLiabilitiesIncurred | {"unit": "INR", "value": 48000000} | 2012-03-31 | sec_edgar |
| xbrl:Assets | {"amount": 4709000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:Assets | {"amount": 4854000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:Assets | {"unit": "INR", "value": 183743000000} | 2011-03-31 | sec_edgar |
| xbrl:AssetsCurrent | {"amount": 1007000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AssetsCurrent | {"amount": 721000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AssetsCurrent | {"unit": "INR", "value": 31809000000} | 2011-03-31 | sec_edgar |
| xbrl:AssetsFairValueDisclosureRecurring | {"amount": 105000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AvailableForSaleSecuritiesDebtSecuritiesCurrent | {"amount": 104000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments | {"amount": 3000000, "currency": "USD"} | 2013-03-31 | sec_edgar |
| xbrl:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments | {"amount": 7000000, "currency": "USD"} | 2012-03-31 | sec_edgar |
| xbrl:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments | {"unit": "INR", "value": 138000000} | 2011-03-31 | sec_edgar |