20-F Filing

MITSUI & CO LTD CIK: 67099 FY 2009

Filing Information

Form Type	20-F
Accession Number	`0001193125-10-187976`
Period End Date	20100331
Filing Date	20100813
Fiscal Year	2009
Fiscal Period	FY
XBRL Instance	mitsy-20100331.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 201 Income Statement 156 Cash Flow Statement 203 Stockholders Equity 69

Balance Sheet 201 line items

Line Item	Tag	Value	Unit	Period
Common stock- no par value	`CommonStockNoParValue`	-	USD	Point-in-time
Common stock- no par value	`CommonStockNoParValue`	0.00	JPY	Point-in-time
Common stock- no par value	`CommonStockNoParValue`	0.00	JPY	Point-in-time
Common stock, Authorized	`CommonStockSharesAuthorized`	2.50B	shares	Point-in-time
Common stock, Authorized	`CommonStockSharesAuthorized`	2.50B	shares	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	$15.07B	USD	Point-in-time
Common stock, Issued	`CommonStockSharesIssued`	1.82B	shares	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	$12.34B	USD	Point-in-time
Common stock, Issued	`CommonStockSharesIssued`	1.83B	shares	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	899.26B	JPY	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	1,147.81B	JPY	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	1,401.40B	JPY	Point-in-time
Cash and cash equivalents (Notes 2, 5 and 22)	`CashAndCashEquivalentsAtCarryingValue`	800.03B	JPY	Point-in-time
Time deposits	`TimeDepositsAtCarryingValue`	$157.00M	USD	Point-in-time
Time deposits	`TimeDepositsAtCarryingValue`	14.56B	JPY	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	3.77M	shares	Point-in-time
Time deposits	`TimeDepositsAtCarryingValue`	5.64B	JPY	Point-in-time
Treasury stock, shares	`TreasuryStockShares`	4.33M	shares	Point-in-time
Marketable securities (Notes 2, 5 and 26)	`MarketableSecuritiesCurrent`	4.36B	JPY	Point-in-time
Marketable securities (Notes 2, 5 and 26)	`MarketableSecuritiesCurrent`	18.10B	JPY	Point-in-time
Marketable securities (Notes 2, 5 and 26)	`MarketableSecuritiesCurrent`	$47.00M	USD	Point-in-time
Notes and loans, less unearned interest	`NotesAndLoansReceivableGrossCurrent`	298.68B	JPY	Point-in-time
Notes and loans, less unearned interest	`NotesAndLoansReceivableGrossCurrent`	293.03B	JPY	Point-in-time
Notes and loans, less unearned interest	`NotesAndLoansReceivableGrossCurrent`	$3.15B	USD	Point-in-time
Accounts (Note 8)	`AccountsReceivableGrossCurrent`	1,412.02B	JPY	Point-in-time
Accounts (Note 8)	`AccountsReceivableGrossCurrent`	1,382.26B	JPY	Point-in-time
Accounts (Note 8)	`AccountsReceivableGrossCurrent`	$14.86B	USD	Point-in-time
Associated companies	`DueFromRelatedPartiesCurrent`	162.17B	JPY	Point-in-time
Associated companies	`DueFromRelatedPartiesCurrent`	$1.74B	USD	Point-in-time
Associated companies	`DueFromRelatedPartiesCurrent`	169.12B	JPY	Point-in-time
Allowance for doubtful receivables (Notes 2 and 7)	`AllowanceForNotesAndLoansReceivableCurrent`	$198.00M	USD	Point-in-time
Allowance for doubtful receivables (Notes 2 and 7)	`AllowanceForNotesAndLoansReceivableCurrent`	18.16B	JPY	Point-in-time
Allowance for doubtful receivables (Notes 2 and 7)	`AllowanceForNotesAndLoansReceivableCurrent`	18.42B	JPY	Point-in-time
Inventories (Notes 2, 9 and 22)	`InventoryNet`	592.53B	JPY	Point-in-time
Inventories (Notes 2, 9 and 22)	`InventoryNet`	504.85B	JPY	Point-in-time
Inventories (Notes 2, 9 and 22)	`InventoryNet`	$5.43B	USD	Point-in-time
Advance payments to suppliers	`RetainageDeposit`	$1.04B	USD	Point-in-time
Advance payments to suppliers	`RetainageDeposit`	96.48B	JPY	Point-in-time
Advance payments to suppliers	`RetainageDeposit`	98.77B	JPY	Point-in-time
Deferred tax assets-current (Notes 2 and 20)	`DeferredTaxAssetsNetCurrent`	39.81B	JPY	Point-in-time
Deferred tax assets-current (Notes 2 and 20)	`DeferredTaxAssetsNetCurrent`	29.97B	JPY	Point-in-time
Deferred tax assets-current (Notes 2 and 20)	`DeferredTaxAssetsNetCurrent`	$428.00M	USD	Point-in-time
Derivative assets (Notes 2, 24 and 26)	`DerivativeAssetsCurrent`	329.90B	JPY	Point-in-time
Derivative assets (Notes 2, 24 and 26)	`DerivativeAssetsCurrent`	$1.23B	USD	Point-in-time
Derivative assets (Notes 2, 24 and 26)	`DerivativeAssetsCurrent`	114.46B	JPY	Point-in-time
Other current assets	`OtherAssetsCurrent`	266.13B	JPY	Point-in-time
Other current assets	`OtherAssetsCurrent`	$2.86B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	334.77B	JPY	Point-in-time
Total current assets	`AssetsCurrent`	4,419.14B	JPY	Point-in-time
Total current assets	`AssetsCurrent`	4,261.09B	JPY	Point-in-time
Total current assets	`AssetsCurrent`	$45.82B	USD	Point-in-time
Investments in and advances to associated companies (Notes 5, 6, 17 and 26)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	1,275.49B	JPY	Point-in-time
Investments in and advances to associated companies (Notes 5, 6, 17 and 26)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$15.09B	USD	Point-in-time
Investments in and advances to associated companies (Notes 5, 6, 17 and 26)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	1,403.06B	JPY	Point-in-time
Other investments (Notes 5 and 26)	`OtherLongTermInvestments`	965.95B	JPY	Point-in-time
Other investments (Notes 5 and 26)	`OtherLongTermInvestments`	$10.39B	USD	Point-in-time
Other investments (Notes 5 and 26)	`OtherLongTermInvestments`	957.22B	JPY	Point-in-time
Non-current receivables, less unearned interest (Notes 8, 24 and 26)	`NotesAndLoansReceivableNetNoncurrent`	453.30B	JPY	Point-in-time
Non-current receivables, less unearned interest (Notes 8, 24 and 26)	`NotesAndLoansReceivableNetNoncurrent`	$4.87B	USD	Point-in-time
Non-current receivables, less unearned interest (Notes 8, 24 and 26)	`NotesAndLoansReceivableNetNoncurrent`	486.41B	JPY	Point-in-time
Allowance for doubtful receivables (Note 7)	`AllowanceForNotesAndLoansReceivableNoncurrent`	51.88B	JPY	Point-in-time
Allowance for doubtful receivables (Note 7)	`AllowanceForNotesAndLoansReceivableNoncurrent`	$521.00M	USD	Point-in-time
Allowance for doubtful receivables (Note 7)	`AllowanceForNotesAndLoansReceivableNoncurrent`	48.47B	JPY	Point-in-time
Property leased to others-at cost, less accumulated depreciation (Note 8)	`PropertySubjectToOrAvailableForOperatingLeaseNet`	$2.41B	USD	Point-in-time
Property leased to others-at cost, less accumulated depreciation (Note 8)	`PropertySubjectToOrAvailableForOperatingLeaseNet`	224.00B	JPY	Point-in-time
Property leased to others-at cost, less accumulated depreciation (Note 8)	`PropertySubjectToOrAvailableForOperatingLeaseNet`	199.20B	JPY	Point-in-time
Total investments and non-current receivables	`LongTermInvestmentsAndReceivablesNet`	2,997.83B	JPY	Point-in-time
Total investments and non-current receivables	`LongTermInvestmentsAndReceivablesNet`	2,866.44B	JPY	Point-in-time
Total investments and non-current receivables	`LongTermInvestmentsAndReceivablesNet`	$32.23B	USD	Point-in-time
Land, land improvements and timberlands	`LandLandImprovementsAndTimberlands`	165.25B	JPY	Point-in-time
Land, land improvements and timberlands	`LandLandImprovementsAndTimberlands`	$1.71B	USD	Point-in-time
Land, land improvements and timberlands	`LandLandImprovementsAndTimberlands`	158.53B	JPY	Point-in-time
Buildings, including leasehold improvements	`BuildingAndLeaseholdImprovementsGross`	$4.10B	USD	Point-in-time
Buildings, including leasehold improvements	`BuildingAndLeaseholdImprovementsGross`	344.39B	JPY	Point-in-time
Buildings, including leasehold improvements	`BuildingAndLeaseholdImprovementsGross`	381.03B	JPY	Point-in-time
Equipment and fixtures	`EquipmentAndFixtures`	$10.54B	USD	Point-in-time
Equipment and fixtures	`EquipmentAndFixtures`	979.96B	JPY	Point-in-time
Equipment and fixtures	`EquipmentAndFixtures`	867.32B	JPY	Point-in-time
Mineral rights	`MineralRights`	$1.43B	USD	Point-in-time
Mineral rights	`MineralRights`	132.51B	JPY	Point-in-time
Mineral rights	`MineralRights`	154.25B	JPY	Point-in-time
Vessels	`PropertyPlantAndEquipmentOther`	$319.00M	USD	Point-in-time
Vessels	`PropertyPlantAndEquipmentOther`	35.75B	JPY	Point-in-time
Vessels	`PropertyPlantAndEquipmentOther`	29.71B	JPY	Point-in-time
Projects in progress	`ConstructionInProgressGross`	170.22B	JPY	Point-in-time
Projects in progress	`ConstructionInProgressGross`	153.92B	JPY	Point-in-time
Projects in progress	`ConstructionInProgressGross`	$1.83B	USD	Point-in-time
Total	`PropertyPlantAndEquipmentGross`	$19.91B	USD	Point-in-time
Total	`PropertyPlantAndEquipmentGross`	1,720.89B	JPY	Point-in-time
Total	`PropertyPlantAndEquipmentGross`	1,851.95B	JPY	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	873.39B	JPY	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$9.39B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	774.60B	JPY	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	946.29B	JPY	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	978.56B	JPY	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$10.52B	USD	Point-in-time
Intangible Assets, less Accumulated Amortization (Notes 2, 3, 12 and 26)	`IntangibleAssetsNetExcludingGoodwill`	96.50B	JPY	Point-in-time
Intangible Assets, less Accumulated Amortization (Notes 2, 3, 12 and 26)	`IntangibleAssetsNetExcludingGoodwill`	84.74B	JPY	Point-in-time
Intangible Assets, less Accumulated Amortization (Notes 2, 3, 12 and 26)	`IntangibleAssetsNetExcludingGoodwill`	$911.00M	USD	Point-in-time
Deferred Tax Assets-Non-current (Notes 2 and 20)	`DeferredTaxAssetsNetNoncurrent`	$144.00M	USD	Point-in-time
Deferred Tax Assets-Non-current (Notes 2 and 20)	`DeferredTaxAssetsNetNoncurrent`	21.01B	JPY	Point-in-time
Deferred Tax Assets-Non-current (Notes 2 and 20)	`DeferredTaxAssetsNetNoncurrent`	13.38B	JPY	Point-in-time
Other Assets (Notes 14, 24 and 26)	`OtherAssetsNoncurrent`	$359.00M	USD	Point-in-time
Other Assets (Notes 14, 24 and 26)	`OtherAssetsNoncurrent`	14.86B	JPY	Point-in-time
Other Assets (Notes 14, 24 and 26)	`OtherAssetsNoncurrent`	33.39B	JPY	Point-in-time
Total	`Assets`	$89.99B	USD	Point-in-time
Total	`Assets`	8,364.24B	JPY	Point-in-time
Total	`Assets`	8,368.98B	JPY	Point-in-time
Short-term debt (Notes 9, 13 and 22)	`ShortTermBorrowings`	241.38B	JPY	Point-in-time
Short-term debt (Notes 9, 13 and 22)	`ShortTermBorrowings`	$2.60B	USD	Point-in-time
Short-term debt (Notes 9, 13 and 22)	`ShortTermBorrowings`	454.06B	JPY	Point-in-time
Current maturities of long-term debt (Notes 8, 9, 13 and 24)	`LongTermDebtCurrent`	373.20B	JPY	Point-in-time
Current maturities of long-term debt (Notes 8, 9, 13 and 24)	`LongTermDebtCurrent`	320.48B	JPY	Point-in-time
Current maturities of long-term debt (Notes 8, 9, 13 and 24)	`LongTermDebtCurrent`	$3.45B	USD	Point-in-time
Notes and acceptances	`ShortTermBankLoansAndNotesPayable`	36.83B	JPY	Point-in-time
Notes and acceptances	`ShortTermBankLoansAndNotesPayable`	$396.00M	USD	Point-in-time
Notes and acceptances	`ShortTermBankLoansAndNotesPayable`	51.05B	JPY	Point-in-time
Accounts	`AccountsPayableCurrent`	$14.06B	USD	Point-in-time
Accounts	`AccountsPayableCurrent`	1,292.52B	JPY	Point-in-time
Accounts	`AccountsPayableCurrent`	1,307.98B	JPY	Point-in-time
Associated companies	`DueToRelatedPartiesCurrent`	39.24B	JPY	Point-in-time
Associated companies	`DueToRelatedPartiesCurrent`	63.76B	JPY	Point-in-time
Associated companies	`DueToRelatedPartiesCurrent`	$686.00M	USD	Point-in-time
Income taxes (Notes 2 and 20)	`AccruedIncomeTaxesCurrent`	$404.00M	USD	Point-in-time
Income taxes (Notes 2 and 20)	`AccruedIncomeTaxesCurrent`	46.58B	JPY	Point-in-time
Income taxes (Notes 2 and 20)	`AccruedIncomeTaxesCurrent`	37.60B	JPY	Point-in-time
Interest	`InterestPayableCurrent`	20.50B	JPY	Point-in-time
Interest	`InterestPayableCurrent`	$206.00M	USD	Point-in-time
Interest	`InterestPayableCurrent`	19.18B	JPY	Point-in-time
Other (Note 14)	`OtherAccruedLiabilitiesCurrent`	$770.00M	USD	Point-in-time
Other (Note 14)	`OtherAccruedLiabilitiesCurrent`	71.58B	JPY	Point-in-time
Other (Note 14)	`OtherAccruedLiabilitiesCurrent`	89.70B	JPY	Point-in-time
Advances from customers (Note 22)	`CustomerAdvancesCurrent`	132.12B	JPY	Point-in-time
Advances from customers (Note 22)	`CustomerAdvancesCurrent`	$1.19B	USD	Point-in-time
Advances from customers (Note 22)	`CustomerAdvancesCurrent`	110.71B	JPY	Point-in-time
Derivative liabilities (Notes 2, 24 and 26)	`DerivativeLiabilitiesCurrent`	83.97B	JPY	Point-in-time
Derivative liabilities (Notes 2, 24 and 26)	`DerivativeLiabilitiesCurrent`	180.53B	JPY	Point-in-time
Derivative liabilities (Notes 2, 24 and 26)	`DerivativeLiabilitiesCurrent`	$903.00M	USD	Point-in-time
Other current liabilities (Notes 2, 20, 21 and 22)	`OtherLiabilitiesCurrent`	87.29B	JPY	Point-in-time
Other current liabilities (Notes 2, 20, 21 and 22)	`OtherLiabilitiesCurrent`	112.99B	JPY	Point-in-time
Other current liabilities (Notes 2, 20, 21 and 22)	`OtherLiabilitiesCurrent`	$939.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$25.60B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	2,792.49B	JPY	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	2,380.77B	JPY	Point-in-time
Long-term Debt, less Current Maturities (Notes 8, 9, 13, 22 and 24)	`LongTermDebtNoncurrent`	2,841.30B	JPY	Point-in-time
Long-term Debt, less Current Maturities (Notes 8, 9, 13, 22 and 24)	`LongTermDebtNoncurrent`	$31.29B	USD	Point-in-time
Long-term Debt, less Current Maturities (Notes 8, 9, 13, 22 and 24)	`LongTermDebtNoncurrent`	2,909.79B	JPY	Point-in-time
Accrued Pension Costs and Liability for Severance Indemnities (Notes 2 and 14)	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	33.93B	JPY	Point-in-time
Accrued Pension Costs and Liability for Severance Indemnities (Notes 2 and 14)	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$365.00M	USD	Point-in-time
Accrued Pension Costs and Liability for Severance Indemnities (Notes 2 and 14)	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	33.81B	JPY	Point-in-time
Deferred Tax Liabilities-Non-current (Notes 2, 20 and 22)	`DeferredTaxLiabilitiesNoncurrent`	$3.28B	USD	Point-in-time
Deferred Tax Liabilities-Non-current (Notes 2, 20 and 22)	`DeferredTaxLiabilitiesNoncurrent`	256.08B	JPY	Point-in-time
Deferred Tax Liabilities-Non-current (Notes 2, 20 and 22)	`DeferredTaxLiabilitiesNoncurrent`	305.10B	JPY	Point-in-time
Other Long-term Liabilities (Notes 2, 11, 21, 24 and 26)	`OtherLiabilitiesNoncurrent`	329.11B	JPY	Point-in-time
Other Long-term Liabilities (Notes 2, 11, 21, 24 and 26)	`OtherLiabilitiesNoncurrent`	309.59B	JPY	Point-in-time
Other Long-term Liabilities (Notes 2, 11, 21, 24 and 26)	`OtherLiabilitiesNoncurrent`	$3.33B	USD	Point-in-time
Common stock-no par value Authorized, 2,500,000,000 shares; Issued, 1,829,153,527 shares in 2010 and 1,824,928,240 shares in 2009	`CommonStockValue`	341.48B	JPY	Point-in-time
Common stock-no par value Authorized, 2,500,000,000 shares; Issued, 1,829,153,527 shares in 2010 and 1,824,928,240 shares in 2009	`CommonStockValue`	339.63B	JPY	Point-in-time
Common stock-no par value Authorized, 2,500,000,000 shares; Issued, 1,829,153,527 shares in 2010 and 1,824,928,240 shares in 2009	`CommonStockValue`	$3.67B	USD	Point-in-time
Capital surplus	`AdditionalPaidInCapitalCommonStock`	$4.61B	USD	Point-in-time
Capital surplus	`AdditionalPaidInCapitalCommonStock`	428.85B	JPY	Point-in-time
Capital surplus	`AdditionalPaidInCapitalCommonStock`	434.19B	JPY	Point-in-time
Appropriated for legal reserve	`RetainedEarningsAppropriated`	53.84B	JPY	Point-in-time
Appropriated for legal reserve	`RetainedEarningsAppropriated`	48.81B	JPY	Point-in-time
Appropriated for legal reserve	`RetainedEarningsAppropriated`	$579.00M	USD	Point-in-time
Unappropriated (Notes 6, 13, and 20)	`RetainedEarningsUnappropriated`	1,618.10B	JPY	Point-in-time
Unappropriated (Notes 6, 13, and 20)	`RetainedEarningsUnappropriated`	1,486.20B	JPY	Point-in-time
Unappropriated (Notes 6, 13, and 20)	`RetainedEarningsUnappropriated`	$17.40B	USD	Point-in-time
Unrealized holding gains and losses on available-for-sale securities (Note 5)	`AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	44.26B	JPY	Point-in-time
Unrealized holding gains and losses on available-for-sale securities (Note 5)	`AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$1.33B	USD	Point-in-time
Unrealized holding gains and losses on available-for-sale securities (Note 5)	`AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	123.89B	JPY	Point-in-time
Foreign currency translation adjustments	`AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax`	-272.67B	JPY	Point-in-time
Foreign currency translation adjustments	`AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax`	-384.62B	JPY	Point-in-time
Foreign currency translation adjustments	`AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax`	$-2.93B	USD	Point-in-time
Defined benefit pension plans (Note 14)	`AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax`	49.13B	JPY	Point-in-time
Defined benefit pension plans (Note 14)	`AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax`	68.68B	JPY	Point-in-time
Defined benefit pension plans (Note 14)	`AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax`	$528.00M	USD	Point-in-time
Net unrealized gains and losses on derivatives (Note 24)	`AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax`	-7.92B	JPY	Point-in-time
Net unrealized gains and losses on derivatives (Note 24)	`AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax`	$-85.00M	USD	Point-in-time
Net unrealized gains and losses on derivatives (Note 24)	`AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax`	-12.46B	JPY	Point-in-time
Total accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	-205.83B	JPY	Point-in-time
Total accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	-421.50B	JPY	Point-in-time
Total accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-2.21B	USD	Point-in-time
Treasury stock, at cost: 4,331,644 shares in 2010 and 3,770,220 shares in 2009	`TreasuryStockValue`	6.32B	JPY	Point-in-time
Treasury stock, at cost: 4,331,644 shares in 2010 and 3,770,220 shares in 2009	`TreasuryStockValue`	$68.00M	USD	Point-in-time
Treasury stock, at cost: 4,331,644 shares in 2010 and 3,770,220 shares in 2009	`TreasuryStockValue`	5.66B	JPY	Point-in-time
Total Mitsui & Co., Ltd. shareholders' equity	`StockholdersEquity`	2,230.13B	JPY	Point-in-time
Total Mitsui & Co., Ltd. shareholders' equity	`StockholdersEquity`	$23.98B	USD	Point-in-time
Total Mitsui & Co., Ltd. shareholders' equity	`StockholdersEquity`	1,881.66B	JPY	Point-in-time
Noncontrolling interests (Note 2)	`MinorityInterest`	$2.15B	USD	Point-in-time
Noncontrolling interests (Note 2)	`MinorityInterest`	229.78B	JPY	Point-in-time
Noncontrolling interests (Note 2)	`MinorityInterest`	199.68B	JPY	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,348.97B	JPY	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,429.81B	JPY	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,427.64B	JPY	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,111.45B	JPY	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$26.13B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$22.70B	USD	Point-in-time
Total	`LiabilitiesAndStockholdersEquity`	8,364.24B	JPY	Point-in-time
Total	`LiabilitiesAndStockholdersEquity`	8,368.98B	JPY	Point-in-time
Total	`LiabilitiesAndStockholdersEquity`	$89.99B	USD	Point-in-time

Income Statement 156 line items

Line Item	Tag	Value	Unit	Period
Sales of products	`SalesRevenueGoodsNet`	$38.61B	USD	Annual
Sales of products	`SalesRevenueGoodsNet`	3,590.49B	JPY	Annual
Sales of products	`SalesRevenueGoodsNet`	4,988.86B	JPY	Annual
Sales of products	`SalesRevenueGoodsNet`	4,852.39B	JPY	Annual
Sales of services	`SalesRevenueServicesNet`	$4.03B	USD	Annual
Sales of services	`SalesRevenueServicesNet`	374.70B	JPY	Annual
Sales of services	`SalesRevenueServicesNet`	550.89B	JPY	Annual
Sales of services	`SalesRevenueServicesNet`	477.87B	JPY	Annual
Other sales (Note 8)	`OtherSalesRevenueNet`	174.53B	JPY	Annual
Other sales (Note 8)	`OtherSalesRevenueNet`	$1.41B	USD	Annual
Other sales (Note 8)	`OtherSalesRevenueNet`	131.25B	JPY	Annual
Other sales (Note 8)	`OtherSalesRevenueNet`	175.36B	JPY	Annual
Total revenues	`Revenues`	5,715.11B	JPY	Annual
Total revenues	`Revenues`	4,096.44B	JPY	Annual
Total revenues	`Revenues`	5,504.79B	JPY	Annual
Total revenues	`Revenues`	$44.05B	USD	Annual
Total Trading Transactions (Notes 2 and 17): 2010, Yen 9,358,379 million-$100,628 million; 2009, Yen 13,125,144 million; 2008, Yen 14,795,021 million	`TradingGainsLosses`	-	USD	Annual
Total Trading Transactions (Notes 2 and 17): 2010, Yen 9,358,379 million-$100,628 million; 2009, Yen 13,125,144 million; 2008, Yen 14,795,021 million	`TradingGainsLosses`	-	JPY	Annual
Total Trading Transactions (Notes 2 and 17): 2010, Yen 9,358,379 million-$100,628 million; 2009, Yen 13,125,144 million; 2008, Yen 14,795,021 million	`TradingGainsLosses`	-	JPY	Annual
Total Trading Transactions (Notes 2 and 17): 2010, Yen 9,358,379 million-$100,628 million; 2009, Yen 13,125,144 million; 2008, Yen 14,795,021 million	`TradingGainsLosses`	-	JPY	Annual
Cost of products sold	`CostOfGoodsSold`	4,496.84B	JPY	Annual
Cost of products sold	`CostOfGoodsSold`	3,195.95B	JPY	Annual
Cost of products sold	`CostOfGoodsSold`	$34.37B	USD	Annual
Cost of products sold	`CostOfGoodsSold`	4,270.93B	JPY	Annual
Cost of services sold	`CostOfServices`	163.18B	JPY	Annual
Cost of services sold	`CostOfServices`	135.60B	JPY	Annual
Cost of services sold	`CostOfServices`	155.54B	JPY	Annual
Cost of services sold	`CostOfServices`	$1.46B	USD	Annual
Cost of other sales (Note 8)	`OtherCostOfOperatingRevenue`	71.41B	JPY	Annual
Cost of other sales (Note 8)	`OtherCostOfOperatingRevenue`	82.13B	JPY	Annual
Cost of other sales (Note 8)	`OtherCostOfOperatingRevenue`	62.94B	JPY	Annual
Cost of other sales (Note 8)	`OtherCostOfOperatingRevenue`	$677.00M	USD	Annual
Total cost of revenues	`CostOfRevenue`	$36.50B	USD	Annual
Total cost of revenues	`CostOfRevenue`	4,734.51B	JPY	Annual
Total cost of revenues	`CostOfRevenue`	3,394.48B	JPY	Annual
Total cost of revenues	`CostOfRevenue`	4,505.52B	JPY	Annual
Gross Profit	`GrossProfit`	701.96B	JPY	Annual
Gross Profit	`GrossProfit`	$7.55B	USD	Annual
Gross Profit	`GrossProfit`	999.26B	JPY	Annual
Gross Profit	`GrossProfit`	980.60B	JPY	Annual
Selling, general and administrative (Notes 2, 8, 12, 14 and 18)	`SellingGeneralAndAdministrativeExpense`	601.35B	JPY	Annual
Selling, general and administrative (Notes 2, 8, 12, 14 and 18)	`SellingGeneralAndAdministrativeExpense`	598.76B	JPY	Annual
Selling, general and administrative (Notes 2, 8, 12, 14 and 18)	`SellingGeneralAndAdministrativeExpense`	546.22B	JPY	Annual
Selling, general and administrative (Notes 2, 8, 12, 14 and 18)	`SellingGeneralAndAdministrativeExpense`	$5.87B	USD	Annual
Provision for doubtful receivables (Notes 2 and 7)	`ProvisionForDoubtfulAccounts`	18.01B	JPY	Annual
Provision for doubtful receivables (Notes 2 and 7)	`ProvisionForDoubtfulAccounts`	$121.00M	USD	Annual
Provision for doubtful receivables (Notes 2 and 7)	`ProvisionForDoubtfulAccounts`	11.23B	JPY	Annual
Provision for doubtful receivables (Notes 2 and 7)	`ProvisionForDoubtfulAccounts`	8.07B	JPY	Annual
Interest income (Notes 2, 7 and 24)	`InvestmentIncomeInterest`	35.88B	JPY	Annual
Interest income (Notes 2, 7 and 24)	`InvestmentIncomeInterest`	$386.00M	USD	Annual
Interest income (Notes 2, 7 and 24)	`InvestmentIncomeInterest`	56.72B	JPY	Annual
Interest income (Notes 2, 7 and 24)	`InvestmentIncomeInterest`	39.62B	JPY	Annual
Interest expense (Notes 2 and 24)	`InterestExpense`	46.31B	JPY	Annual
Interest expense (Notes 2 and 24)	`InterestExpense`	74.35B	JPY	Annual
Interest expense (Notes 2 and 24)	`InterestExpense`	105.28B	JPY	Annual
Interest expense (Notes 2 and 24)	`InterestExpense`	$498.00M	USD	Annual
Dividend income	`InvestmentIncomeDividend`	37.72B	JPY	Annual
Dividend income	`InvestmentIncomeDividend`	50.12B	JPY	Annual
Dividend income	`InvestmentIncomeDividend`	$406.00M	USD	Annual
Dividend income	`InvestmentIncomeDividend`	71.95B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	92.30B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	33.23B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	20.95B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	$225.00M	USD	Annual
Loss on write-down of securities (Notes 2, 5, 17 and 26)	`ImpairmentOfInvestments`	$521.00M	USD	Annual
Loss on write-down of securities (Notes 2, 5, 17 and 26)	`ImpairmentOfInvestments`	36.69B	JPY	Annual
Loss on write-down of securities (Notes 2, 5, 17 and 26)	`ImpairmentOfInvestments`	48.49B	JPY	Annual
Loss on write-down of securities (Notes 2, 5, 17 and 26)	`ImpairmentOfInvestments`	117.26B	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	3.59B	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	-	USD	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	5.00M	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	-340.00M	JPY	Annual
Impairment loss of long-lived assets (Notes 2, 10, 12 and 23)	`ImpairmentOfLongLivedAssetsHeldForUse`	37.69B	JPY	Annual
Impairment loss of long-lived assets (Notes 2, 10, 12 and 23)	`ImpairmentOfLongLivedAssetsHeldForUse`	8.71B	JPY	Annual
Impairment loss of long-lived assets (Notes 2, 10, 12 and 23)	`ImpairmentOfLongLivedAssetsHeldForUse`	24.00B	JPY	Annual
Impairment loss of long-lived assets (Notes 2, 10, 12 and 23)	`ImpairmentOfLongLivedAssetsHeldForUse`	$94.00M	USD	Annual
Impairment loss of goodwill (Notes 2 and 12)	`GoodwillImpairmentLoss`	2.00B	JPY	Annual
Impairment loss of goodwill (Notes 2 and 12)	`GoodwillImpairmentLoss`	18.57B	JPY	Annual
Impairment loss of goodwill (Notes 2 and 12)	`GoodwillImpairmentLoss`	$107.00M	USD	Annual
Impairment loss of goodwill (Notes 2 and 12)	`GoodwillImpairmentLoss`	9.91B	JPY	Annual
Other (income) expense-net (Notes 18, 19 and 24)	`OtherCostAndExpenseOperating`	-399.00M	JPY	Annual
Other (income) expense-net (Notes 18, 19 and 24)	`OtherCostAndExpenseOperating`	$-4.00M	USD	Annual
Other (income) expense-net (Notes 18, 19 and 24)	`OtherCostAndExpenseOperating`	3.06B	JPY	Annual
Other (income) expense-net (Notes 18, 19 and 24)	`OtherCostAndExpenseOperating`	40.81B	JPY	Annual
Total other expenses	`OperatingExpenses`	575.92B	JPY	Annual
Total other expenses	`OperatingExpenses`	581.67B	JPY	Annual
Total other expenses	`OperatingExpenses`	$6.19B	USD	Annual
Total other expenses	`OperatingExpenses`	757.09B	JPY	Annual
Income from Continuing Operations before Income Taxes and Equity in Earnings (Note 20)	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.35B	USD	Annual
Income from Continuing Operations before Income Taxes and Equity in Earnings (Note 20)	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	398.94B	JPY	Annual
Income from Continuing Operations before Income Taxes and Equity in Earnings (Note 20)	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	242.18B	JPY	Annual
Income from Continuing Operations before Income Taxes and Equity in Earnings (Note 20)	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	126.04B	JPY	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	172.50B	JPY	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	105.57B	JPY	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$1.14B	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	135.22B	JPY	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	18.94B	JPY	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	57.12B	JPY	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-176.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	-16.35B	JPY	Annual
Total	`IncomeTaxExpenseBenefit`	154.17B	JPY	Annual
Total	`IncomeTaxExpenseBenefit`	$959.00M	USD	Annual
Total	`IncomeTaxExpenseBenefit`	89.22B	JPY	Annual
Total	`IncomeTaxExpenseBenefit`	229.62B	JPY	Annual
Income from Continuing Operations before Equity in Earnings	`IncomeBeforeMinorityInterestEarningsAndEquityInvestments`	36.82B	JPY	Annual
Income from Continuing Operations before Equity in Earnings	`IncomeBeforeMinorityInterestEarningsAndEquityInvestments`	$396.00M	USD	Annual
Income from Continuing Operations before Equity in Earnings	`IncomeBeforeMinorityInterestEarningsAndEquityInvestments`	169.32B	JPY	Annual
Income from Continuing Operations before Equity in Earnings	`IncomeBeforeMinorityInterestEarningsAndEquityInvestments`	88.01B	JPY	Annual
Equity in Earnings of Associated Companies-Net (Notes 2, 6, 17 and 26)	`IncomeLossFromEquityMethodInvestments`	$1.41B	USD	Annual
Equity in Earnings of Associated Companies-Net (Notes 2, 6, 17 and 26)	`IncomeLossFromEquityMethodInvestments`	213.29B	JPY	Annual
Equity in Earnings of Associated Companies-Net (Notes 2, 6, 17 and 26)	`IncomeLossFromEquityMethodInvestments`	120.66B	JPY	Annual
Equity in Earnings of Associated Companies-Net (Notes 2, 6, 17 and 26)	`IncomeLossFromEquityMethodInvestments`	131.47B	JPY	Annual
Income from Continuing Operations before attribution of Noncontrolling Interests (Note 2)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$1.81B	USD	Annual
Income from Continuing Operations before attribution of Noncontrolling Interests (Note 2)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	168.30B	JPY	Annual
Income from Continuing Operations before attribution of Noncontrolling Interests (Note 2)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	382.61B	JPY	Annual
Income from Continuing Operations before attribution of Noncontrolling Interests (Note 2)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	208.67B	JPY	Annual
(Loss) Income from Discontinued Operations-Net (After Income Tax Effect) (Notes 4 and 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	77.18B	JPY	Annual
(Loss) Income from Discontinued Operations-Net (After Income Tax Effect) (Notes 4 and 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-794.00M	JPY	Annual
(Loss) Income from Discontinued Operations-Net (After Income Tax Effect) (Notes 4 and 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	4.03B	JPY	Annual
(Loss) Income from Discontinued Operations-Net (After Income Tax Effect) (Notes 4 and 20)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-9.00M	USD	Annual
Net Income before attribution of Noncontrolling Interests (Note 2)	`ProfitLoss`	212.70B	JPY	Annual
Net Income before attribution of Noncontrolling Interests (Note 2)	`ProfitLoss`	167.50B	JPY	Annual
Net Income before attribution of Noncontrolling Interests (Note 2)	`ProfitLoss`	459.79B	JPY	Annual
Net Income before attribution of Noncontrolling Interests (Note 2)	`ProfitLoss`	$1.80B	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	49.73B	JPY	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$191.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	35.09B	JPY	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	17.78B	JPY	Annual
Net Income attributable to Mitsui & Co., Ltd.	`NetIncomeLoss`	177.61B	JPY	Annual
Net Income attributable to Mitsui & Co., Ltd.	`NetIncomeLoss`	410.06B	JPY	Annual
Net Income attributable to Mitsui & Co., Ltd.	`NetIncomeLoss`	149.72B	JPY	Annual
Net Income attributable to Mitsui & Co., Ltd.	`NetIncomeLoss`	$1.61B	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.89	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	95.74	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	186.71	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	82.48	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	40.49	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	1.85	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-0.36	JPY	Annual
Total	`EarningsPerShareBasic`	97.59	JPY	Annual
Total	`EarningsPerShareBasic`	$0.88	USD	Annual
Total	`EarningsPerShareBasic`	82.12	JPY	Annual
Total	`EarningsPerShareBasic`	227.20	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	95.47	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	184.76	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	82.47	JPY	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.89	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-0.36	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	40.06	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	1.85	JPY	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	Annual
Total	`EarningsPerShareDiluted`	97.32	JPY	Annual
Total	`EarningsPerShareDiluted`	$0.88	USD	Annual
Total	`EarningsPerShareDiluted`	224.82	JPY	Annual
Total	`EarningsPerShareDiluted`	82.11	JPY	Annual

Cash Flow Statement 203 line items

Line Item	Tag	Value	Unit	Period
Net income before attribution of noncontrolling interests (Note 2)	`ProfitLoss`	212.70B	JPY	Annual
Net income before attribution of noncontrolling interests (Note 2)	`ProfitLoss`	167.50B	JPY	Annual
Net income before attribution of noncontrolling interests (Note 2)	`ProfitLoss`	459.79B	JPY	Annual
Net income before attribution of noncontrolling interests (Note 2)	`ProfitLoss`	$1.80B	USD	Annual
Loss (income) from discontinued operations-net (after income tax effect)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	77.18B	JPY	Annual
Loss (income) from discontinued operations-net (after income tax effect)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-794.00M	JPY	Annual
Loss (income) from discontinued operations-net (after income tax effect)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	4.03B	JPY	Annual
Loss (income) from discontinued operations-net (after income tax effect)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-9.00M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$1.47B	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	139.56B	JPY	Annual
Depreciation and amortization	`DepreciationAndAmortization`	136.95B	JPY	Annual
Depreciation and amortization	`DepreciationAndAmortization`	131.76B	JPY	Annual
Pension and severance costs, less payments	`EmployeeBenefitsAndShareBasedCompensation`	15.64B	JPY	Annual
Pension and severance costs, less payments	`EmployeeBenefitsAndShareBasedCompensation`	2.81B	JPY	Annual
Pension and severance costs, less payments	`EmployeeBenefitsAndShareBasedCompensation`	$168.00M	USD	Annual
Pension and severance costs, less payments	`EmployeeBenefitsAndShareBasedCompensation`	-2.36B	JPY	Annual
Provision for doubtful receivables	`ProvisionForDoubtfulAccounts`	18.01B	JPY	Annual
Provision for doubtful receivables	`ProvisionForDoubtfulAccounts`	$121.00M	USD	Annual
Provision for doubtful receivables	`ProvisionForDoubtfulAccounts`	11.23B	JPY	Annual
Provision for doubtful receivables	`ProvisionForDoubtfulAccounts`	8.07B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	92.30B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	33.23B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	20.95B	JPY	Annual
Gain on sales of securities-net	`GainLossOnSaleOfSecuritiesNet`	$225.00M	USD	Annual
Loss on write-down of securities	`ImpairmentOfInvestments`	$521.00M	USD	Annual
Loss on write-down of securities	`ImpairmentOfInvestments`	36.69B	JPY	Annual
Loss on write-down of securities	`ImpairmentOfInvestments`	48.49B	JPY	Annual
Loss on write-down of securities	`ImpairmentOfInvestments`	117.26B	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	3.59B	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	-	USD	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	5.00M	JPY	Annual
(Gain) loss on disposal or sales of property and equipment-net	`GainLossOnDispositionOfProperty`	-340.00M	JPY	Annual
Impairment loss of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	37.69B	JPY	Annual
Impairment loss of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	8.71B	JPY	Annual
Impairment loss of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	24.00B	JPY	Annual
Impairment loss of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	$94.00M	USD	Annual
Impairment loss of goodwill	`AdjustmentGoodwillImpairmentLoss`	9.91B	JPY	Annual
Impairment loss of goodwill	`AdjustmentGoodwillImpairmentLoss`	$106.00M	USD	Annual
Impairment loss of goodwill	`AdjustmentGoodwillImpairmentLoss`	18.57B	JPY	Annual
Impairment loss of goodwill	`AdjustmentGoodwillImpairmentLoss`	2.00B	JPY	Annual
Deferred income taxes	`AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther`	-1.90B	JPY	Annual
Deferred income taxes	`AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther`	$-176.00M	USD	Annual
Deferred income taxes	`AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther`	-16.35B	JPY	Annual
Deferred income taxes	`AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther`	18.94B	JPY	Annual
Equity in earnings of associated companies, less dividends received	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$214.00M	USD	Annual
Equity in earnings of associated companies, less dividends received	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	19.93B	JPY	Annual
Equity in earnings of associated companies, less dividends received	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	55.02B	JPY	Annual
Equity in earnings of associated companies, less dividends received	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	24.06B	JPY	Annual
Decrease in trade receivables	`IncreaseDecreaseInAccountsReceivable`	-87.16B	JPY	Annual
Decrease in trade receivables	`IncreaseDecreaseInAccountsReceivable`	-77.98B	JPY	Annual
Decrease in trade receivables	`IncreaseDecreaseInAccountsReceivable`	$-937.00M	USD	Annual
Decrease in trade receivables	`IncreaseDecreaseInAccountsReceivable`	-838.62B	JPY	Annual
Decrease (increase) in inventories	`IncreaseDecreaseInInventories`	-79.03B	JPY	Annual
Decrease (increase) in inventories	`IncreaseDecreaseInInventories`	75.40B	JPY	Annual
Decrease (increase) in inventories	`IncreaseDecreaseInInventories`	-63.31B	JPY	Annual
Decrease (increase) in inventories	`IncreaseDecreaseInInventories`	$-850.00M	USD	Annual
Decrease in trade payables	`IncreaseDecreaseInAccountsPayableTrade`	-25.62B	JPY	Annual
Decrease in trade payables	`IncreaseDecreaseInAccountsPayableTrade`	-41.95B	JPY	Annual
Decrease in trade payables	`IncreaseDecreaseInAccountsPayableTrade`	-569.86B	JPY	Annual
Decrease in trade payables	`IncreaseDecreaseInAccountsPayableTrade`	$-275.00M	USD	Annual
(Decrease) increase in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	-24.54B	JPY	Annual
(Decrease) increase in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	4.03B	JPY	Annual
(Decrease) increase in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	-62.73B	JPY	Annual
(Decrease) increase in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-264.00M	USD	Annual
Decrease (increase) in advance payments to suppliers	`IncreaseDecreaseInDepositsOutstanding`	$-280.00M	USD	Annual
Decrease (increase) in advance payments to suppliers	`IncreaseDecreaseInDepositsOutstanding`	20.38B	JPY	Annual
Decrease (increase) in advance payments to suppliers	`IncreaseDecreaseInDepositsOutstanding`	-26.01B	JPY	Annual
Decrease (increase) in advance payments to suppliers	`IncreaseDecreaseInDepositsOutstanding`	35.73B	JPY	Annual
(Decrease) increase in advances from customers	`IncreaseDecreaseInCustomerAdvances`	20.42B	JPY	Annual
(Decrease) increase in advances from customers	`IncreaseDecreaseInCustomerAdvances`	-47.06B	JPY	Annual
(Decrease) increase in advances from customers	`IncreaseDecreaseInCustomerAdvances`	51.72B	JPY	Annual
(Decrease) increase in advances from customers	`IncreaseDecreaseInCustomerAdvances`	$-506.00M	USD	Annual
Decrease (increase) in derivative assets	`IncreaseDecreaseInDerivativeAssets`	$-2.01B	USD	Annual
Decrease (increase) in derivative assets	`IncreaseDecreaseInDerivativeAssets`	-186.65B	JPY	Annual
Decrease (increase) in derivative assets	`IncreaseDecreaseInDerivativeAssets`	60.58B	JPY	Annual
Decrease (increase) in derivative assets	`IncreaseDecreaseInDerivativeAssets`	167.17B	JPY	Annual
(Decrease) increase in derivative liabilities	`IncreaseDecreaseInDerivativeLiabilities`	106.45B	JPY	Annual
(Decrease) increase in derivative liabilities	`IncreaseDecreaseInDerivativeLiabilities`	-61.72B	JPY	Annual
(Decrease) increase in derivative liabilities	`IncreaseDecreaseInDerivativeLiabilities`	-64.83B	JPY	Annual
(Decrease) increase in derivative liabilities	`IncreaseDecreaseInDerivativeLiabilities`	$-664.00M	USD	Annual
Decrease (increase) in other current assets- income tax receivables	`IncreaseDecreaseInIncomeTaxesReceivable`	66.34B	JPY	Annual
Decrease (increase) in other current assets- income tax receivables	`IncreaseDecreaseInIncomeTaxesReceivable`	-46.96B	JPY	Annual
Decrease (increase) in other current assets- income tax receivables	`IncreaseDecreaseInIncomeTaxesReceivable`	$-505.00M	USD	Annual
Decrease (increase) in other current assets- income tax receivables	`IncreaseDecreaseInIncomeTaxesReceivable`	18.21B	JPY	Annual
Other-net	`IncreaseDecreaseInOtherOperatingCapitalNet`	-73.01B	JPY	Annual
Other-net	`IncreaseDecreaseInOtherOperatingCapitalNet`	-18.83B	JPY	Annual
Other-net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-202.00M	USD	Annual
Other-net	`IncreaseDecreaseInOtherOperatingCapitalNet`	10.37B	JPY	Annual
Net cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	14.74B	JPY	Annual
Net cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	7.15B	JPY	Annual
Net cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$50.00M	USD	Annual
Net cash provided by operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	4.66B	JPY	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	582.67B	JPY	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$6.80B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	632.36B	JPY	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	415.79B	JPY	Annual
Net (increase) decrease in time deposits	`PaymentsForProceedsFromTimeDeposits`	-3.34B	JPY	Annual
Net (increase) decrease in time deposits	`PaymentsForProceedsFromTimeDeposits`	12.89B	JPY	Annual
Net (increase) decrease in time deposits	`PaymentsForProceedsFromTimeDeposits`	$139.00M	USD	Annual
Net (increase) decrease in time deposits	`PaymentsForProceedsFromTimeDeposits`	6.61B	JPY	Annual
Investments in and advances to associated companies	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	$974.00M	USD	Annual
Investments in and advances to associated companies	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	90.58B	JPY	Annual
Investments in and advances to associated companies	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	206.87B	JPY	Annual
Investments in and advances to associated companies	`PaymentsToAcquireInterestInSubsidiariesAndAffiliates`	192.89B	JPY	Annual
Sales of investments in and collection of advances to associated companies	`SalesOfInvestmentsInAndCollectionOfAdvancesToAssociatedCompanies`	309.62B	JPY	Annual
Sales of investments in and collection of advances to associated companies	`SalesOfInvestmentsInAndCollectionOfAdvancesToAssociatedCompanies`	61.25B	JPY	Annual
Sales of investments in and collection of advances to associated companies	`SalesOfInvestmentsInAndCollectionOfAdvancesToAssociatedCompanies`	$492.00M	USD	Annual
Sales of investments in and collection of advances to associated companies	`SalesOfInvestmentsInAndCollectionOfAdvancesToAssociatedCompanies`	45.73B	JPY	Annual
Acquisitions of available-for-sale securities	`PaymentsToAcquireAvailableForSaleSecurities`	$210.00M	USD	Annual
Acquisitions of available-for-sale securities	`PaymentsToAcquireAvailableForSaleSecurities`	19.56B	JPY	Annual
Acquisitions of available-for-sale securities	`PaymentsToAcquireAvailableForSaleSecurities`	6.04B	JPY	Annual
Acquisitions of available-for-sale securities	`PaymentsToAcquireAvailableForSaleSecurities`	62.64B	JPY	Annual
Proceeds from sales of available-for-sale securities	`ProceedsFromSaleOfAvailableForSaleSecurities`	16.11B	JPY	Annual
Proceeds from sales of available-for-sale securities	`ProceedsFromSaleOfAvailableForSaleSecurities`	45.65B	JPY	Annual
Proceeds from sales of available-for-sale securities	`ProceedsFromSaleOfAvailableForSaleSecurities`	$189.00M	USD	Annual
Proceeds from sales of available-for-sale securities	`ProceedsFromSaleOfAvailableForSaleSecurities`	17.55B	JPY	Annual
Proceeds from maturities of available-for-sale securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	16.12B	JPY	Annual
Proceeds from maturities of available-for-sale securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	4.51B	JPY	Annual
Proceeds from maturities of available-for-sale securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$173.00M	USD	Annual
Proceeds from maturities of available-for-sale securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	5.91B	JPY	Annual
Proceeds from maturities of held-to-maturity debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	$20.00M	USD	Annual
Proceeds from maturities of held-to-maturity debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	1.89B	JPY	Annual
Proceeds from maturities of held-to-maturity debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	6.20B	JPY	Annual
Proceeds from maturities of held-to-maturity debt securities	`ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities`	69.00M	JPY	Annual
Acquisitions of other investments	`PaymentsToAcquireOtherInvestments`	29.23B	JPY	Annual
Acquisitions of other investments	`PaymentsToAcquireOtherInvestments`	131.54B	JPY	Annual
Acquisitions of other investments	`PaymentsToAcquireOtherInvestments`	$314.00M	USD	Annual
Acquisitions of other investments	`PaymentsToAcquireOtherInvestments`	70.19B	JPY	Annual
Proceeds from sales and maturities of other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$833.00M	USD	Annual
Proceeds from sales and maturities of other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	77.48B	JPY	Annual
Proceeds from sales and maturities of other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	97.87B	JPY	Annual
Proceeds from sales and maturities of other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	51.04B	JPY	Annual
Increase in long-term loan receivables	`PaymentsToAcquireLoansReceivable`	88.04B	JPY	Annual
Increase in long-term loan receivables	`PaymentsToAcquireLoansReceivable`	$894.00M	USD	Annual
Increase in long-term loan receivables	`PaymentsToAcquireLoansReceivable`	76.43B	JPY	Annual
Increase in long-term loan receivables	`PaymentsToAcquireLoansReceivable`	83.11B	JPY	Annual
Collection of long-term loan receivables	`ProceedsFromCollectionOfLoansReceivable`	85.69B	JPY	Annual
Collection of long-term loan receivables	`ProceedsFromCollectionOfLoansReceivable`	$912.00M	USD	Annual
Collection of long-term loan receivables	`ProceedsFromCollectionOfLoansReceivable`	86.02B	JPY	Annual
Collection of long-term loan receivables	`ProceedsFromCollectionOfLoansReceivable`	84.86B	JPY	Annual
Additions to property leased to others and property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	232.14B	JPY	Annual
Additions to property leased to others and property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	282.06B	JPY	Annual
Additions to property leased to others and property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	253.64B	JPY	Annual
Additions to property leased to others and property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$2.50B	USD	Annual
Proceeds from sales of property leased to others and property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	115.83B	JPY	Annual
Proceeds from sales of property leased to others and property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$471.00M	USD	Annual
Proceeds from sales of property leased to others and property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	43.78B	JPY	Annual
Proceeds from sales of property leased to others and property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	34.57B	JPY	Annual
Acquisitions of subsidiaries, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	1.21B	JPY	Annual
Acquisitions of subsidiaries, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	52.22B	JPY	Annual
Proceeds from sales of subsidiaries, net of cash held by subsidiaries	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	106.32B	JPY	Annual
Proceeds from sales of subsidiaries, net of cash held by subsidiaries	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	4.69B	JPY	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	-104.78B	JPY	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	-290.89B	JPY	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	-180.09B	JPY	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.94B	USD	Annual
Net (decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-148.85B	JPY	Annual
Net (decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	-212.41B	JPY	Annual
Net (decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	41.02B	JPY	Annual
Net (decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-2.28B	USD	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	493.32B	JPY	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$5.30B	USD	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	365.74B	JPY	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	551.25B	JPY	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	435.21B	JPY	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$4.68B	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	314.09B	JPY	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	513.85B	JPY	Annual
Transactions with noncontrolling interests shareholders	`PaymentsToMinorityShareholders`	14.40B	JPY	Annual
Transactions with noncontrolling interests shareholders	`PaymentsToMinorityShareholders`	$509.00M	USD	Annual
Transactions with noncontrolling interests shareholders	`PaymentsToMinorityShareholders`	47.33B	JPY	Annual
Purchases of treasury stock-net	`PaymentsForRepurchaseOfCommonStock`	1.60B	JPY	Annual
Purchases of treasury stock-net	`PaymentsForRepurchaseOfCommonStock`	31.00M	JPY	Annual
Purchases of treasury stock-net	`PaymentsForRepurchaseOfCommonStock`	724.00M	JPY	Annual
Purchases of treasury stock-net	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Payments of cash dividends	`PaymentsOfDividends`	72.08B	JPY	Annual
Payments of cash dividends	`PaymentsOfDividends`	$137.00M	USD	Annual
Payments of cash dividends	`PaymentsOfDividends`	87.32B	JPY	Annual
Payments of cash dividends	`PaymentsOfDividends`	12.78B	JPY	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	-9.77B	JPY	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	-185.13B	JPY	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	-214.44B	JPY	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-2.31B	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$170.00M	USD	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	15.77B	JPY	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	-26.65B	JPY	Annual
Effect of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	-33.45B	JPY	Annual
Net Increase in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	253.59B	JPY	Annual
Net Increase in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$2.73B	USD	Annual
Net Increase in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	248.54B	JPY	Annual
Net Increase in Cash and Cash Equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	99.23B	JPY	Annual
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$15.07B	USD	Point-in-time
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	$12.34B	USD	Point-in-time
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	899.26B	JPY	Point-in-time
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	1,147.81B	JPY	Point-in-time
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	1,401.40B	JPY	Point-in-time
Cash and Cash Equivalents at Beginning of Year	`CashAndCashEquivalentsAtCarryingValue`	800.03B	JPY	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	$15.07B	USD	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	$12.34B	USD	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	899.26B	JPY	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	1,147.81B	JPY	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	1,401.40B	JPY	Point-in-time
Cash and Cash Equivalents at End of Year	`CashAndCashEquivalentsAtCarryingValue`	800.03B	JPY	Point-in-time

Stockholders Equity 69 line items

Line Item	Tag	Value	Unit	Period
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,348.97B	JPY	Point-in-time
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,429.81B	JPY	Point-in-time
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,427.64B	JPY	Point-in-time
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,111.45B	JPY	Point-in-time
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$26.13B	USD	Point-in-time
Balance at beginning of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$22.70B	USD	Point-in-time
Cumulative effect of a change in accounting principle-initial application of ASC 740 (formerly FIN No. 48)	`CumulativeEffectOfInitialAdoptionOfFIN48`	-5.11B	JPY	Annual
Conversion of bonds	`AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature`	28.62B	JPY	Annual
Conversion of bonds	`AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature`	$40.00M	USD	Annual
Conversion of bonds	`AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature`	4.16B	JPY	Annual
Conversion of bonds	`AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature`	3.71B	JPY	Annual
Net income attributable to Mitsui & Co., Ltd (Note 2)	`NetIncomeLoss`	177.61B	JPY	Annual
Net income attributable to Mitsui & Co., Ltd (Note 2)	`NetIncomeLoss`	410.06B	JPY	Annual
Net income attributable to Mitsui & Co., Ltd (Note 2)	`NetIncomeLoss`	149.72B	JPY	Annual
Net income attributable to Mitsui & Co., Ltd (Note 2)	`NetIncomeLoss`	$1.61B	USD	Annual
(Losses) gains on sales of treasury stock	`LossGainOnSalesOfTreasuryStock`	-	USD	Annual
(Losses) gains on sales of treasury stock	`LossGainOnSalesOfTreasuryStock`	-2.00M	JPY	Annual
(Losses) gains on sales of treasury stock	`LossGainOnSalesOfTreasuryStock`	-191.00M	JPY	Annual
(Losses) gains on sales of treasury stock	`LossGainOnSalesOfTreasuryStock`	60.00M	JPY	Annual
Net income before attribution of noncontrolling interests	`ProfitLoss`	212.70B	JPY	Annual
Net income before attribution of noncontrolling interests	`ProfitLoss`	167.50B	JPY	Annual
Net income before attribution of noncontrolling interests	`ProfitLoss`	459.79B	JPY	Annual
Net income before attribution of noncontrolling interests	`ProfitLoss`	$1.80B	USD	Annual
Cash dividends paid to Mitsui & Co., Ltd. shareholders	`DividendsCash`	$137.00M	USD	Annual
Cash dividends paid to Mitsui & Co., Ltd. shareholders	`DividendsCash`	87.32B	JPY	Annual
Cash dividends paid to Mitsui & Co., Ltd. shareholders	`DividendsCash`	72.08B	JPY	Annual
Cash dividends paid to Mitsui & Co., Ltd. shareholders	`DividendsCash`	12.78B	JPY	Annual
Dividends paid to noncontrolling interest shareholders	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	15.75B	JPY	Annual
Dividends paid to noncontrolling interest shareholders	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	10.80B	JPY	Annual
Dividends paid to noncontrolling interest shareholders	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$116.00M	USD	Annual
Dividends paid to noncontrolling interest shareholders	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	16.48B	JPY	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	49.73B	JPY	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$191.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	35.09B	JPY	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	17.78B	JPY	Annual
Unrealized holding gains (losses) on available-for-sale securities (after income tax effect) (Note 5)	`OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesNetOfTax`	-66.86B	JPY	Annual
Unrealized holding gains (losses) on available-for-sale securities (after income tax effect) (Note 5)	`OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesNetOfTax`	113.95B	JPY	Annual
Unrealized holding gains (losses) on available-for-sale securities (after income tax effect) (Note 5)	`OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesNetOfTax`	$-719.00M	USD	Annual
Unrealized holding gains (losses) on available-for-sale securities (after income tax effect) (Note 5)	`OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesNetOfTax`	119.53B	JPY	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease`	115.07B	JPY	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease`	$1.24B	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease`	-134.04B	JPY	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease`	-257.13B	JPY	Annual
Net prior service (cost) credit	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-240.00M	JPY	Annual
Net prior service (cost) credit	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	232.00M	JPY	Annual
Net prior service (cost) credit	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$2.00M	USD	Annual
Net prior service (cost) credit	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-463.00M	JPY	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	-35.03B	JPY	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	20.00B	JPY	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	-37.19B	JPY	Annual
Net actuarial gain (loss)	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	$215.00M	USD	Annual
Net unrealized gains (losses) on derivatives (after income tax effect) (Note 24)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$50.00M	USD	Annual
Net unrealized gains (losses) on derivatives (after income tax effect) (Note 24)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	-7.65B	JPY	Annual
Net unrealized gains (losses) on derivatives (after income tax effect) (Note 24)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	-13.95B	JPY	Annual
Net unrealized gains (losses) on derivatives (after income tax effect) (Note 24)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	4.68B	JPY	Annual
Sales and purchases of treasury stock	`SalesAndPurchasesOfTreasuryStock`	-1.66B	JPY	Annual
Sales and purchases of treasury stock	`SalesAndPurchasesOfTreasuryStock`	-532.00M	JPY	Annual
Sales and purchases of treasury stock	`SalesAndPurchasesOfTreasuryStock`	$-7.00M	USD	Annual
Sales and purchases of treasury stock	`SalesAndPurchasesOfTreasuryStock`	-659.00M	JPY	Annual
Equity transactions with noncontrolling interest shareholders	`StockholdersEquityOther`	1.70B	JPY	Annual
Equity transactions with noncontrolling interest shareholders	`StockholdersEquityOther`	34.98B	JPY	Annual
Equity transactions with noncontrolling interest shareholders	`StockholdersEquityOther`	$376.00M	USD	Annual
Equity transactions with noncontrolling interest shareholders	`StockholdersEquityOther`	24.24B	JPY	Annual
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,348.97B	JPY	Point-in-time
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,429.81B	JPY	Point-in-time
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,427.64B	JPY	Point-in-time
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	2,111.45B	JPY	Point-in-time
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$26.13B	USD	Point-in-time
Balance at end of year	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$22.70B	USD	Point-in-time

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.