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Element us-gaap_GainLossOnDispositionOfProperty had a mix of decimals attribute values: -3 -6. Element us-gaap_OtherGeneralExpense had a mix of decimals attribute values: -3 -6. Element kmtuf_InstallmentReceivablesInterestIncome had a mix of decimals attribute values: -3 -6. Element kmtuf_OtherInterestIncome had a mix of decimals attribute values: -3 -6. Element us-gaap_InvestmentIncomeDividend had a mix of decimals attribute values: -3 -6. Element us-gaap_ForeignCurrencyTransactionGainLossBeforeTax had a mix of decimals attribute values: -3 -6. Element us-gaap_OtherNonoperatingExpense had a mix of decimals attribute values: -3 -6. Element us-gaap_NonoperatingIncomeExpense had a mix of decimals attribute values: -3 -6. Element us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts had a mix of decimals attribute values: -3 -6. 'Monetary' elements on report '0120 - Statement - Consolidated Statements of Income' had a mix of different decimal attribute values. 'Monetary' elements on report '0140 - Statement - Consolidated Statements of Cash Flows' had a mix of different decimal attribute values. 'Monetary' elements on report '0603 - Disclosure - Acquisition {Details}' had a mix of different decimal attribute values. 'Monetary' elements on report '06031 - Disclosure - Acquisition {Details Textuals}' had a mix of different decimal attribute values. 'Monetary' elements on report '0606 - Disclosure - Investment Securities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '0608 - Disclosure - Property, Plant and Equipment (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '06113 - Disclosure - Short-Term and Long-Term Debt (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '0612 - Disclosure - Liability for Pension and Other Retirement Benefits (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '061209 - Disclosure - Liability for Pension and Other Retirement Benefits (Details 9)' had a mix of different decimal attribute values. 'Monetary' elements on report '061216 - Disclosure - Liability for Pension and Other Retirement Benefits (Details Textuals)' had a mix of different decimal attribute values. 'Monetary' elements on report '06151 - Disclosure - Income Taxes (Details 1)' had a mix of different decimal attribute values. 'Monetary' elements on report '06152 - Disclosure - Income Taxes (Details Textual)' had a mix of different decimal attribute values. 'Monetary' elements on report '0616 - Disclosure - Rent Expenses (Details)' had a mix of different decimal attribute values. Process Flow-Through: 0110 - Statement - Consolidated Balance Sheets Process Flow-Through: Removing column 'Mar. 31, 2009 JPY (¥)' Process Flow-Through: Removing column 'Mar. 31, 2008 JPY (¥)' Process Flow-Through: 0111 - Statement - Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 0120 - Statement - Consolidated Statements of Income Process Flow-Through: 0140 - Statement - Consolidated Statements of Cash Flows kmtuf-20110331.xml kmtuf-20110331.xsd kmtuf-20110331_cal.xml kmtuf-20110331_def.xml kmtuf-20110331_lab.xml kmtuf-20110331_pre.xml true true