10-Q Filing

KIRBY CORP CIK: 56047 Q1 2025

Filing Information

Form Type	10-Q
Accession Number	`0000950170-25-068858`
Period End Date	20250331
Filing Date	20250512
Fiscal Year	2025
Fiscal Period	Q1
XBRL Instance	kex-20250331_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 164 Income Statement 68 Cash Flow Statement 116 Stockholders Equity 48 Comprehensive Income 28

Balance Sheet 164 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$51.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$51.08M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$74.44M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$74.44M	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.10	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$489.86M	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$489.86M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$505.62M	USD	Point-in-time
Trade - less allowance for doubtful accounts	`AccountsReceivableNetCurrent`	$505.62M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	120.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Other	`OtherReceivables`	$48.00M	USD	Point-in-time
Other	`OtherReceivables`	$48.00M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	65.50M	shares	Point-in-time
Other	`OtherReceivables`	$46.89M	USD	Point-in-time
Other	`OtherReceivables`	$46.89M	USD	Point-in-time
Inventories - net	`InventoryNet`	$434.71M	USD	Point-in-time
Inventories - net	`InventoryNet`	$434.71M	USD	Point-in-time
Inventories - net	`InventoryNet`	$393.90M	USD	Point-in-time
Inventories - net	`InventoryNet`	$393.90M	USD	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time
Treasury stock, shares	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$62.88M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$62.88M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.47M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$63.47M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.10B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.10B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.12B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.12B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.31B	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentGross`	$6.31B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.16B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.16B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.10B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.10B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.15B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.15B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.02B	USD	Point-in-time
Property and equipment - net	`PropertyPlantAndEquipmentNet`	$4.02B	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$158.99M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$158.99M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$157.90M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$157.90M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Goodwill	`Goodwill`	$438.75M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$32.27M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$32.27M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$34.41M	USD	Point-in-time
Other intangibles, net	`FiniteLivedIntangibleAssetsNet`	$34.41M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$128.28M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$128.28M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$134.10M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$134.10M	USD	Point-in-time
Total assets	`Assets`	$6.01B	USD	Point-in-time
Total assets	`Assets`	$6.01B	USD	Point-in-time
Total assets	`Assets`	$5.85B	USD	Point-in-time
Total assets	`Assets`	$5.85B	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$8.23M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$8.23M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$7.34M	USD	Point-in-time
Bank notes payable	`NotesPayableToBankCurrent`	$7.34M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$25.42M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$25.42M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$21.93M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$21.93M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$272.16M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$272.16M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$251.35M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$251.35M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$236.81M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$236.81M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$190.41M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$190.41M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.42M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.42M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.73M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$35.73M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$171.33M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$171.33M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$177.22M	USD	Point-in-time
Deferred revenues	`ContractWithCustomerLiabilityCurrent`	$177.22M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$734.75M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$734.75M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$698.58M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$698.58M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$866.72M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$866.72M	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$1.09B	USD	Point-in-time
Long-term debt, net - less current portion	`LongTermDebtNoncurrent`	$1.09B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$739.47M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$739.47M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$741.42M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$741.42M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$146.25M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$146.25M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$148.17M	USD	Point-in-time
Operating lease liabilities - less current portion	`OperatingLeaseLiabilityNoncurrent`	$148.17M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.59M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.59M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.56M	USD	Point-in-time
Other long-term liabilities	`OtherLiabilitiesNoncurrent`	$9.56M	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.76B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.76B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.99B	USD	Point-in-time
Total long-term liabilities	`LiabilitiesNoncurrent`	$1.99B	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Common stock, $0.10 par value per share. Authorized 120 million shares, issued 65.5 million shares	`CommonStockValue`	$6.55M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$868.76M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$868.76M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$865.01M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$865.01M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$71.19M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$71.19M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$69.63M	USD	Point-in-time
Accumulated other comprehensive income - net	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$69.63M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.05B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.05B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.98B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.98B	USD	Point-in-time
Treasury stock - at cost, 9.1 million shares at March 31, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$669.51M	USD	Point-in-time
Treasury stock - at cost, 9.1 million shares at March 31, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$669.51M	USD	Point-in-time
Treasury stock - at cost, 9.1 million shares at March 31, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$573.06M	USD	Point-in-time
Treasury stock - at cost, 9.1 million shares at March 31, 2025 and 8.2 million at December 31, 2024	`TreasuryStockValue`	$573.06M	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.35B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.35B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.33B	USD	Point-in-time
Total Kirby stockholders' equity	`StockholdersEquity`	$3.33B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.72M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.72M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.44M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$1.44M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$5.85B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$5.85B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$6.01B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$6.01B	USD	Point-in-time

Income Statement 68 line items

Line Item	Tag	Value	Unit	Period
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$808.02M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$808.02M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$785.66M	USD	1 Quarter
Revenues	`RevenueFromContractWithCustomerExcludingAssessedTax`	$785.66M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$550.68M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$550.68M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$512.34M	USD	1 Quarter
Costs of sales and operating expenses	`CostsOfSalesAndOperatingExpenses`	$512.34M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$95.29M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$95.29M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$90.21M	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$90.21M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$8.04M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$8.04M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$8.83M	USD	1 Quarter
Taxes, other than on income	`TaxesExcludingIncomeAndExciseTaxes`	$8.83M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$63.73M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$63.73M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.64M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.64M	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$70.00K	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$70.00K	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$74.00K	USD	1 Quarter
Gain on disposition of assets	`GainLossOnDispositionOfAssets`	$74.00K	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$680.11M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$680.11M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$706.50M	USD	1 Quarter
Total costs and expenses	`CostsAndExpenses`	$706.50M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$101.52M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$101.52M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$105.55M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$105.55M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$5.33M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$5.33M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$3.27M	USD	1 Quarter
Other income	`OtherNonoperatingIncome`	$3.27M	USD	1 Quarter
Interest expense	`InterestExpense`	$10.54M	USD	1 Quarter
Interest expense	`InterestExpense`	$10.54M	USD	1 Quarter
Interest expense	`InterestExpense`	$13.15M	USD	1 Quarter
Interest expense	`InterestExpense`	$13.15M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$91.64M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$91.64M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$100.34M	USD	1 Quarter
Earnings before taxes on income	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$100.34M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$21.73M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$21.73M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$24.07M	USD	1 Quarter
Provision for taxes on income	`IncomeTaxExpenseBenefit`	$24.07M	USD	1 Quarter
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-153.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-153.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$284.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$284.00K	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$70.07M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$70.07M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$75.99M	USD	1 Quarter
Net earnings attributable to Kirby	`NetIncomeLoss`	$75.99M	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.33	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.33	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.20	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.20	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.19	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.19	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.33	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.33	USD	1 Quarter

Cash Flow Statement 116 line items

Line Item	Tag	Value	Unit	Period
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$63.73M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$63.73M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.64M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$57.64M	USD	1 Quarter
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$2.57M	USD	1 Quarter
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$2.57M	USD	1 Quarter
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$9.41M	USD	1 Quarter
Provision for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$9.41M	USD	1 Quarter
Amortization of share-based compensation	`ShareBasedCompensation`	$6.41M	USD	1 Quarter
Amortization of share-based compensation	`ShareBasedCompensation`	$6.41M	USD	1 Quarter
Amortization of share-based compensation	`ShareBasedCompensation`	$7.85M	USD	1 Quarter
Amortization of share-based compensation	`ShareBasedCompensation`	$7.85M	USD	1 Quarter
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$8.35M	USD	1 Quarter
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$8.35M	USD	1 Quarter
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$7.18M	USD	1 Quarter
Amortization of major maintenance costs	`AmortizationOfMajorMaintenanceCosts`	$7.18M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-1.25M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-1.25M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-1.61M	USD	1 Quarter
Other	`OtherNoncashIncomeExpense`	$-1.61M	USD	1 Quarter
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$30.04M	USD	1 Quarter
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$30.04M	USD	1 Quarter
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$122.31M	USD	1 Quarter
Decrease in cash flows resulting from changes in operating assets and liabilities, net	`IncreaseDecreaseInOperatingCapital`	$122.31M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$123.29M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$123.29M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$36.54M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$36.54M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$81.05M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$81.05M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$78.69M	USD	1 Quarter
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$78.69M	USD	1 Quarter
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$97.25M	USD	1 Quarter
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$97.25M	USD	1 Quarter
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	1 Quarter
Acquisitions of businesses and marine equipment	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	1 Quarter
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$81.00K	USD	1 Quarter
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$81.00K	USD	1 Quarter
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$2.41M	USD	1 Quarter
Proceeds from disposition of assets	`ProceedsFromSaleOfProductiveAssets`	$2.41M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-78.64M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-78.64M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-175.86M	USD	1 Quarter
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-175.86M	USD	1 Quarter
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$43.58M	USD	1 Quarter
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$43.58M	USD	1 Quarter
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$224.11M	USD	1 Quarter
Borrowings on bank credit facilities, net	`ProceedsFromRepaymentsOfLinesOfCredit`	$224.11M	USD	1 Quarter
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.00K	USD	1 Quarter
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.00K	USD	1 Quarter
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	1 Quarter
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$1.51M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$1.51M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$262.00K	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$262.00K	USD	1 Quarter
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.95M	USD	1 Quarter
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.95M	USD	1 Quarter
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.28M	USD	1 Quarter
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.28M	USD	1 Quarter
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$101.47M	USD	1 Quarter
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$101.47M	USD	1 Quarter
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$41.79M	USD	1 Quarter
Treasury stock purchases	`PaymentsForRepurchaseOfCommonStock`	$41.79M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-24.00K	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-24.00K	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.00M	USD	1 Quarter
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.00M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-2.01M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-2.01M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$115.95M	USD	1 Quarter
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$115.95M	USD	1 Quarter
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-23.37M	USD	1 Quarter
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-23.37M	USD	1 Quarter
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$42.64M	USD	1 Quarter
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$42.64M	USD	1 Quarter
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$75.22M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$75.22M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.08M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.08M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$75.22M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$75.22M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$74.44M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.08M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$51.08M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Cash and cash equivalents, end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$32.58M	USD	Point-in-time
Interest paid	`InterestPaidNet`	$17.71M	USD	1 Quarter
Interest paid	`InterestPaidNet`	$17.71M	USD	1 Quarter
Interest paid	`InterestPaidNet`	$21.51M	USD	1 Quarter
Interest paid	`InterestPaidNet`	$21.51M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$1.06M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$1.06M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$24.99M	USD	1 Quarter
Income taxes paid, net	`IncomeTaxesPaidNet`	$24.99M	USD	1 Quarter
Operating cash outflow from operating leases	`OperatingLeasePayments`	$11.75M	USD	1 Quarter
Operating cash outflow from operating leases	`OperatingLeasePayments`	$11.75M	USD	1 Quarter
Operating cash outflow from operating leases	`OperatingLeasePayments`	$11.26M	USD	1 Quarter
Operating cash outflow from operating leases	`OperatingLeasePayments`	$11.26M	USD	1 Quarter
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$1.59M	USD	1 Quarter
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$1.59M	USD	1 Quarter
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-12.01M	USD	1 Quarter
Capital expenditures included in accounts payable	`CapitalExpendituresIncurredPaidAndNotYetPaid`	$-12.01M	USD	1 Quarter
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$5.52M	USD	1 Quarter
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$5.52M	USD	1 Quarter
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$5.09M	USD	1 Quarter
Right-of-use assets obtained in exchange for lease obligations	`RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability`	$5.09M	USD	1 Quarter

Stockholders Equity 48 line items

Line Item	Tag	Value	Unit	Period
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$262.00K	USD	1 Quarter
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$262.00K	USD	1 Quarter
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$1.51M	USD	1 Quarter
Stock option exercises	`StockIssuedDuringPeriodValueStockOptionsExercised`	$1.51M	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.28M	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.28M	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.95M	USD	1 Quarter
Tax withholdings on equity award vesting	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.95M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-7.85M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-7.85M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-6.41M	USD	1 Quarter
Amortization of share-based compensation	`EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount`	$-6.41M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$101.47M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$101.47M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$41.79M	USD	1 Quarter
Treasury stock purchases	`TreasuryStockValueAcquiredCostMethod`	$41.79M	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$302.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$302.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$892.00K	USD	1 Quarter
Excise taxes on treasury stock purchases	`ExciseTaxesOnTreasuryStockPurchases`	$892.00K	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$69.52M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$69.52M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$74.71M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$74.71M	USD	1 Quarter
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.22B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.35B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.19B	USD	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	8.20M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	9.10M	shares	Point-in-time

Comprehensive Income 28 line items

Line Item	Tag	Value	Unit	Period
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$76.27M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Net earnings	`ProfitLoss`	$69.92M	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$395.00K	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$395.00K	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.87M	USD	1 Quarter
Pension and postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.87M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$308.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$308.00K	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	1 Quarter
Total other comprehensive loss, net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-395.00K	USD	1 Quarter
Total other comprehensive loss, net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-395.00K	USD	1 Quarter
Total other comprehensive loss, net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-1.56M	USD	1 Quarter
Total other comprehensive loss, net of taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-1.56M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$69.52M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$69.52M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$74.71M	USD	1 Quarter
Total comprehensive income, net of taxes	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$74.71M	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-153.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-153.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$284.00K	USD	1 Quarter
Net (earnings) loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$284.00K	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$74.43M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$74.43M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$69.67M	USD	1 Quarter
Comprehensive income attributable to Kirby	`ComprehensiveIncomeNetOfTax`	$69.67M	USD	1 Quarter

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