10-K Filing

BWX TECHNOLOGIES, INC. CIK: 1486957 FY 2017

Filing Information

Form Type	10-K
Accession Number	`0001486957-18-000007`
Period End Date	20171231
Filing Date	20180227
Fiscal Year	2017
Fiscal Period	FY
XBRL Instance	bwxt-20171231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 104 Income Statement 158 Cash Flow Statement 132 Stockholders Equity 49 Comprehensive Income 54

Balance Sheet 104 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (usd per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (usd per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (shares)	`CommonStockSharesAuthorized`	325.00M	shares	Point-in-time
Common stock, shares authorized (shares)	`CommonStockSharesAuthorized`	325.00M	shares	Point-in-time
Common stock, shares issued (shares)	`CommonStockSharesIssued`	125.38M	shares	Point-in-time
Common stock, shares issued (shares)	`CommonStockSharesIssued`	124.15M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$125.64M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$203.40M	USD	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalents`	$7.11M	USD	Point-in-time
Preferred stock, par value (usd per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalents`	$6.13M	USD	Point-in-time
Preferred stock, par value (usd per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, shares authorized (shares)	`PreferredStockSharesAuthorized`	75.00M	shares	Point-in-time
Preferred stock, shares authorized (shares)	`PreferredStockSharesAuthorized`	75.00M	shares	Point-in-time
Investments	`ShortTermInvestments`	$14.52M	USD	Point-in-time
Investments	`ShortTermInvestments`	$2.93M	USD	Point-in-time
Accounts receivable trade, net	`AccountsReceivableNetCurrent`	$135.95M	USD	Point-in-time
Preferred stock, shares issued (shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Accounts receivable trade, net	`AccountsReceivableNetCurrent`	$189.22M	USD	Point-in-time
Treasury stock at cost (shares)	`TreasuryStockShares`	25.96M	shares	Point-in-time
Accounts receivable other	`OtherReceivables`	$25.22M	USD	Point-in-time
Accounts receivable other	`OtherReceivables`	$19.36M	USD	Point-in-time
Treasury stock at cost (shares)	`TreasuryStockShares`	24.86M	shares	Point-in-time
Contracts in progress	`CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear`	$420.63M	USD	Point-in-time
Contracts in progress	`CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear`	$356.79M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$29.32M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$30.44M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$693.57M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$873.09M	USD	Point-in-time
Property, Plant and Equipment	`PropertyPlantAndEquipmentGross`	$922.64M	USD	Point-in-time
Property, Plant and Equipment	`PropertyPlantAndEquipmentGross`	$1.01B	USD	Point-in-time
Less accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$664.51M	USD	Point-in-time
Less accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$622.96M	USD	Point-in-time
Net Property, Plant and Equipment	`PropertyPlantAndEquipmentNet`	$348.63M	USD	Point-in-time
Net Property, Plant and Equipment	`PropertyPlantAndEquipmentNet`	$268.84M	USD	Point-in-time
Net Property, Plant and Equipment	`PropertyPlantAndEquipmentNet`	$299.69M	USD	Point-in-time
Investments	`LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates`	$9.01M	USD	Point-in-time
Investments	`LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates`	$9.30M	USD	Point-in-time
Goodwill	`Goodwill`	$210.79M	USD	Point-in-time
Goodwill	`Goodwill`	$218.33M	USD	Point-in-time
Goodwill	`Goodwill`	$168.43M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxAssetsNet`	$86.74M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxAssetsNet`	$194.46M	USD	Point-in-time
Investments in Unconsolidated Affiliates	`EquityMethodInvestments`	$43.27M	USD	Point-in-time
Investments in Unconsolidated Affiliates	`EquityMethodInvestments`	$42.85M	USD	Point-in-time
Intangible Assets	`IntangibleAssetsNetExcludingGoodwill`	$114.75M	USD	Point-in-time
Intangible Assets	`IntangibleAssetsNetExcludingGoodwill`	$110.41M	USD	Point-in-time
Intangible Assets	`IntangibleAssetsNetExcludingGoodwill`	$58.33M	USD	Point-in-time
Intangible Assets	`IntangibleAssetsNetExcludingGoodwill`	$60.23M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$14.69M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$22.58M	USD	Point-in-time
TOTAL	`Assets`	$1.71B	USD	Point-in-time
TOTAL	`Assets`	$1.58B	USD	Point-in-time
Current maturities of long-term debt	`DebtCurrent`	$27.37M	USD	Point-in-time
Current maturities of long-term debt	`DebtCurrent`	$27.87M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$93.42M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$99.98M	USD	Point-in-time
Accrued employee benefits	`EmployeeRelatedLiabilitiesCurrent`	$82.48M	USD	Point-in-time
Accrued employee benefits	`EmployeeRelatedLiabilitiesCurrent`	$81.79M	USD	Point-in-time
Accrued liabilities other	`OtherAccruedLiabilitiesCurrent`	$64.74M	USD	Point-in-time
Accrued liabilities other	`OtherAccruedLiabilitiesCurrent`	$72.11M	USD	Point-in-time
Advance billings on contracts	`BillingsInExcessOfCost`	$246.19M	USD	Point-in-time
Advance billings on contracts	`BillingsInExcessOfCost`	$147.15M	USD	Point-in-time
Accrued warranty expense	`ProductWarrantyAccrualClassifiedCurrent`	$11.48M	USD	Point-in-time
Accrued warranty expense	`ProductWarrantyAccrualClassifiedCurrent`	$13.43M	USD	Point-in-time
Accrued warranty expense	`ProductWarrantyAccrualClassifiedCurrent`	$13.54M	USD	Point-in-time
Accrued warranty expense	`ProductWarrantyAccrualClassifiedCurrent`	$15.89M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$439.88M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$528.13M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$497.72M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$481.06M	USD	Point-in-time
Accumulated Postretirement Benefit Obligation	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$19.06M	USD	Point-in-time
Accumulated Postretirement Benefit Obligation	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$21.37M	USD	Point-in-time
Environmental Liabilities	`AccruedEnvironmentalLossContingenciesNoncurrent`	$79.79M	USD	Point-in-time
Environmental Liabilities	`AccruedEnvironmentalLossContingenciesNoncurrent`	$81.71M	USD	Point-in-time
Pension Liability	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$296.44M	USD	Point-in-time
Pension Liability	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$357.05M	USD	Point-in-time
Other Liabilities	`OtherLiabilitiesNoncurrent`	$19.80M	USD	Point-in-time
Other Liabilities	`OtherLiabilitiesNoncurrent`	$33.99M	USD	Point-in-time
Commitments and Contingencies (Note 10)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies (Note 10)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, par value $0.01 per share, authorized 325,000,000 shares; issued 125,381,591 and 124,149,609 shares at December 31, 2017 and December 31, 2016, respectively	`CommonStockValue`	$1.24M	USD	Point-in-time
Common stock, par value $0.01 per share, authorized 325,000,000 shares; issued 125,381,591 and 124,149,609 shares at December 31, 2017 and December 31, 2016, respectively	`CommonStockValue`	$1.25M	USD	Point-in-time
Preferred stock, par value $0.01 per share, authorized 75,000,000 shares; no shares issued	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, par value $0.01 per share, authorized 75,000,000 shares; no shares issued	`PreferredStockValue`	-	USD	Point-in-time
Capital in excess of par value	`AdditionalPaidInCapitalCommonStock`	$22.02M	USD	Point-in-time
Capital in excess of par value	`AdditionalPaidInCapitalCommonStock`	$98.84M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$990.65M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$885.12M	USD	Point-in-time
Treasury stock at cost, 25,964,088 and 24,858,809 shares at December 31, 2017 and December 31, 2016, respectively	`TreasuryStockValue`	$814.81M	USD	Point-in-time
Treasury stock at cost, 25,964,088 and 24,858,809 shares at December 31, 2017 and December 31, 2016, respectively	`TreasuryStockValue`	$762.17M	USD	Point-in-time
Accumulated other comprehensive income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$3.81M	USD	Point-in-time
Accumulated other comprehensive income	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$9.45M	USD	Point-in-time
Stockholders' Equity BWX Technologies, Inc.	`StockholdersEquity`	$150.02M	USD	Point-in-time
Stockholders' Equity BWX Technologies, Inc.	`StockholdersEquity`	$285.39M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$363.00K	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$392.00K	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$285.76M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.01B	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$279.63M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$150.41M	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.58B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.71B	USD	Point-in-time

Income Statement 158 line items

Line Item	Tag	Value	Unit	Period
Revenues	`Revenues`	$403.86M	USD	1 Quarter
Revenues	`Revenues`	$419.36M	USD	1 Quarter
Revenues	`Revenues`	$410.01M	USD	1 Quarter
Revenues	`Revenues`	$402.38M	USD	1 Quarter
Revenues	`Revenues`	$1.55B	USD	Annual
Revenues	`Revenues`	$430.14M	USD	1 Quarter
Revenues	`Revenues`	$1.42B	USD	Annual
Revenues	`Revenues`	$1.69B	USD	Annual
Revenues	`Revenues`	$379.50M	USD	1 Quarter
Revenues	`Revenues`	$364.83M	USD	1 Quarter
Revenues	`Revenues`	$428.23M	USD	1 Quarter
Cost of operations	`CostOfRevenue`	$1.07B	USD	Annual
Cost of operations	`CostOfRevenue`	$1.03B	USD	Annual
Cost of operations	`CostOfRevenue`	$1.17B	USD	Annual
Research and development costs	`ResearchAndDevelopmentExpense`	$6.41M	USD	Annual
Research and development costs	`ResearchAndDevelopmentExpense`	$10.54M	USD	Annual
Research and development costs	`ResearchAndDevelopmentExpense`	$7.19M	USD	Annual
Losses (gains) on asset disposals and impairments, net	`GainLossOnDispositionOfAssets`	$43.00K	USD	Annual
Losses (gains) on asset disposals and impairments, net	`GainLossOnDispositionOfAssets`	$194.00K	USD	Annual
Losses (gains) on asset disposals and impairments, net	`GainLossOnDispositionOfAssets`	$-382.00K	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$216.49M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$207.76M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$214.61M	USD	Annual
mPower framework agreement	`LossContingencyLossInPeriod`	$30.00M	USD	Annual
mPower framework agreement	`LossContingencyLossInPeriod`	-	USD	Annual
mPower framework agreement	`LossContingencyLossInPeriod`	-	USD	Annual
Income related to litigation proceeds	`IncomeRelatedToLitigationProceeds`	-	USD	Annual
Income related to litigation proceeds	`IncomeRelatedToLitigationProceeds`	-	USD	Annual
Income related to litigation proceeds	`IncomeRelatedToLitigationProceeds`	$65.73M	USD	Annual
Special charges for restructuring activities	`RestructuringCharges`	-	USD	Annual
Special charges for restructuring activities	`RestructuringCharges`	$16.61M	USD	Annual
Special charges for restructuring activities	`RestructuringCharges`	-	USD	Annual
Costs to spin-off the Power Generation business	`CostsIncurredDevelopmentCosts`	-	USD	Annual
Costs to spin-off the Power Generation business	`CostsIncurredDevelopmentCosts`	$25.99M	USD	Annual
Costs to spin-off the Power Generation business	`CostsIncurredDevelopmentCosts`	-	USD	Annual
Total Costs and Expenses	`CostsAndExpenses`	$1.22B	USD	Annual
Total Costs and Expenses	`CostsAndExpenses`	$1.33B	USD	Annual
Total Costs and Expenses	`CostsAndExpenses`	$1.39B	USD	Annual
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$5.01M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$13.40M	USD	Annual
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$16.07M	USD	Annual
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$2.78M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$3.53M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$4.71M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$3.33M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$3.88M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$2.82M	USD	1 Quarter
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$13.61M	USD	Annual
Equity in Income of Investees	`IncomeLossFromEquityMethodInvestments`	$3.63M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$88.46M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$205.94M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$42.61M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$92.35M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$73.68M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$308.88M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$83.20M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$45.82M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$59.65M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$62.37M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$239.26M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$30.33M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$651.00K	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.41M	USD	Annual
Interest expense	`InterestExpense`	$14.88M	USD	Annual
Interest expense	`InterestExpense`	$10.18M	USD	Annual
Interest expense	`InterestExpense`	$8.39M	USD	Annual
Other net	`OtherIncomeExpenseNet`	$-5.03M	USD	Annual
Other net	`OtherIncomeExpenseNet`	$25.75M	USD	Annual
Other net	`OtherIncomeExpenseNet`	$369.00K	USD	Annual
Total Other Income (Expense)	`OtherNonoperatingIncomeExpense`	$18.00M	USD	Annual
Total Other Income (Expense)	`OtherNonoperatingIncomeExpense`	$-13.11M	USD	Annual
Total Other Income (Expense)	`OtherNonoperatingIncomeExpense`	$15.12M	USD	Annual
Total before tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$295.78M	USD	Annual
Total before tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$221.06M	USD	Annual
Total before tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$257.27M	USD	Annual
Provision for Income Taxes	`IncomeTaxExpenseBenefit`	$73.66M	USD	Annual
Provision for Income Taxes	`IncomeTaxExpenseBenefit`	$80.42M	USD	Annual
Provision for Income Taxes	`IncomeTaxExpenseBenefit`	$147.41M	USD	Annual
Income from continuing operations before noncontrolling interest	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$183.61M	USD	Annual
Income from continuing operations before noncontrolling interest	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$148.37M	USD	Annual
Income from continuing operations before noncontrolling interest	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$140.65M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-9.20M	USD	Annual
Net Income	`ProfitLoss`	$183.61M	USD	Annual
Net Income	`ProfitLoss`	$131.45M	USD	Annual
Net Income	`ProfitLoss`	$148.37M	USD	Annual
Net (Income) Loss Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$521.00K	USD	Annual
Net (Income) Loss Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-19.00K	USD	Annual
Net (Income) Loss Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$555.00K	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$33.99M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$49.63M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$-15.69M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$183.06M	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$131.47M	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$41.06M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$61.26M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$58.37M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$55.72M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$46.55M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$147.84M	USD	Annual
Income from continuing operations, net of tax	`IncomeLossFromContinuingOperations`	$183.06M	USD	Annual
Income from continuing operations, net of tax	`IncomeLossFromContinuingOperations`	$147.84M	USD	Annual
Income from continuing operations, net of tax	`IncomeLossFromContinuingOperations`	$140.77M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	-	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-9.31M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	-	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$33.99M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$49.63M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$-15.69M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$183.06M	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$131.47M	USD	Annual
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$41.06M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$61.26M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$58.37M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$55.72M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$46.55M	USD	1 Quarter
Net Income Attributable to BWX Technologies, Inc.	`NetIncomeLoss`	$147.84M	USD	Annual
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.49	USD	Annual
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.32	USD	Annual
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.79	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.09	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.62	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.34	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$1.79	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.47	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$-0.16	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$1.23	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.56	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$1.49	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.48	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.56	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareBasic`	$0.40	USD	1 Quarter
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.47	USD	Annual
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.76	USD	Annual
Income from continuing operations (USD per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.31	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.09	USD	Annual
Income (loss) from discontinued operations (USD per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$1.76	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.47	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$1.22	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$1.47	USD	Annual
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.61	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.55	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$-0.16	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.56	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.39	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.34	USD	1 Quarter
Net income attributable to BWX Technologies, Inc. (USD per share)	`EarningsPerShareDiluted`	$0.46	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	102.47M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	99.33M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	106.70M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	103.84M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	107.58M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	100.37M	shares	Annual

Cash Flow Statement 132 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$183.61M	USD	Annual
Net income	`ProfitLoss`	$131.45M	USD	Annual
Net income	`ProfitLoss`	$148.37M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$50.55M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$56.56M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$78.62M	USD	Annual
Income of investees, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-1.95M	USD	Annual
Income of investees, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$1.02M	USD	Annual
Income of investees, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-2.52M	USD	Annual
Losses on asset disposals and impairments	`GainsLossesOnDispositionOfAssetsAndImpairments`	$43.00K	USD	Annual
Losses on asset disposals and impairments	`GainsLossesOnDispositionOfAssetsAndImpairments`	$194.00K	USD	Annual
Losses on asset disposals and impairments	`GainsLossesOnDispositionOfAssetsAndImpairments`	$-26.44M	USD	Annual
Gain on deconsolidation of Generation mPower LLC	`DeconsolidationGainOrLossAmount`	-	USD	Annual
Gain on deconsolidation of Generation mPower LLC	`DeconsolidationGainOrLossAmount`	$13.57M	USD	Annual
Gain on deconsolidation of Generation mPower LLC	`DeconsolidationGainOrLossAmount`	-	USD	Annual
Gain on deconsolidation of Generation mPower LLC	`DeconsolidationGainOrLossAmount`	$13.60M	USD	1 Quarter
Impairment of investments	`CostmethodInvestmentsOtherThanTemporaryImpairment`	-	USD	Annual
Impairment of investments	`CostmethodInvestmentsOtherThanTemporaryImpairment`	$2.14M	USD	Annual
Impairment of investments	`CostmethodInvestmentsOtherThanTemporaryImpairment`	-	USD	Annual
Provision for (benefit from) deferred taxes	`DeferredIncomeTaxesAndTaxCredits`	$93.46M	USD	Annual
Provision for (benefit from) deferred taxes	`DeferredIncomeTaxesAndTaxCredits`	$-7.23M	USD	Annual
Provision for (benefit from) deferred taxes	`DeferredIncomeTaxesAndTaxCredits`	$-38.49M	USD	Annual
Recognition of (gains) losses for pension and postretirement plans	`RecognitionOfGainsLossesForPensionAndPostretirementPlans`	$-54.10M	USD	Annual
Recognition of (gains) losses for pension and postretirement plans	`RecognitionOfGainsLossesForPensionAndPostretirementPlans`	$-12.82M	USD	Annual
Recognition of (gains) losses for pension and postretirement plans	`RecognitionOfGainsLossesForPensionAndPostretirementPlans`	$-22.94M	USD	Annual
Stock-based compensation and thrift plan expense	`ShareBasedCompensation`	$31.70M	USD	Annual
Stock-based compensation and thrift plan expense	`ShareBasedCompensation`	$15.22M	USD	Annual
Stock-based compensation and thrift plan expense	`ShareBasedCompensation`	$15.37M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$42.80M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-28.57M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-40.09M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-23.98M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$19.55M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-7.48M	USD	Annual
Contracts in progress and advance billings on contracts	`IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts`	$-35.27M	USD	Annual
Contracts in progress and advance billings on contracts	`IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts`	$60.47M	USD	Annual
Contracts in progress and advance billings on contracts	`IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts`	$-57.17M	USD	Annual
Income taxes	`IncreaseDecreaseInIncomeTaxes`	$13.22M	USD	Annual
Income taxes	`IncreaseDecreaseInIncomeTaxes`	$15.12M	USD	Annual
Income taxes	`IncreaseDecreaseInIncomeTaxes`	$-6.99M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$-26.61M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$-5.53M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$18.54M	USD	Annual
Pension liability, accrued postretirement benefit obligation and employee benefits	`IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits`	$21.06M	USD	Annual
Pension liability, accrued postretirement benefit obligation and employee benefits	`IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits`	$32.88M	USD	Annual
Pension liability, accrued postretirement benefit obligation and employee benefits	`IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits`	$79.31M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-19.37M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$796.00K	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$9.11M	USD	Annual
NET CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$222.15M	USD	Annual
NET CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$239.85M	USD	Annual
NET CASH PROVIDED BY OPERATING ACTIVITIES	`NetCashProvidedByUsedInOperatingActivities`	$335.16M	USD	Annual
Decrease (increase) in restricted cash and cash equivalents	`IncreaseDecreaseInRestrictedCash`	$-3.60M	USD	Annual
Decrease (increase) in restricted cash and cash equivalents	`IncreaseDecreaseInRestrictedCash`	$-9.23M	USD	Annual
Decrease (increase) in restricted cash and cash equivalents	`IncreaseDecreaseInRestrictedCash`	$975.00K	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$52.63M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$96.88M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$68.33M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$117.78M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$715.00K	USD	Annual
Purchases of securities	`PaymentsToAcquireAvailableForSaleSecurities`	$3.24M	USD	Annual
Purchases of securities	`PaymentsToAcquireAvailableForSaleSecurities`	$13.47M	USD	Annual
Purchases of securities	`PaymentsToAcquireAvailableForSaleSecurities`	$18.65M	USD	Annual
Sales and maturities of securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$12.85M	USD	Annual
Sales and maturities of securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$9.26M	USD	Annual
Sales and maturities of securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$6.46M	USD	Annual
Proceeds from asset disposals	`ProceedsFromSalesOfAssetsInvestingActivities`	$397.00K	USD	Annual
Proceeds from asset disposals	`ProceedsFromSalesOfAssetsInvestingActivities`	$63.00K	USD	Annual
Proceeds from asset disposals	`ProceedsFromSalesOfAssetsInvestingActivities`	$43.00K	USD	Annual
Investments, net of return of capital, in equity method investees	`PaymentsToAcquireAssetsInvestingActivities`	$9.16M	USD	Annual
Investments, net of return of capital, in equity method investees	`PaymentsToAcquireAssetsInvestingActivities`	$2.79M	USD	Annual
Investments, net of return of capital, in equity method investees	`PaymentsToAcquireAssetsInvestingActivities`	$200.00K	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-691.00K	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	Annual
NET CASH USED IN INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-90.66M	USD	Annual
NET CASH USED IN INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-179.69M	USD	Annual
NET CASH USED IN INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-71.89M	USD	Annual
Borrowings under Credit Agreement	`ProceedsFromIssuanceOfDebt`	$177.35M	USD	Annual
Borrowings under Credit Agreement	`ProceedsFromIssuanceOfDebt`	$109.40M	USD	Annual
Borrowings under Credit Agreement	`ProceedsFromIssuanceOfDebt`	$539.50M	USD	Annual
Repayments under Credit Agreement	`RepaymentsOfLinesOfCredit`	$137.05M	USD	Annual
Repayments under Credit Agreement	`RepaymentsOfLinesOfCredit`	$177.35M	USD	Annual
Repayments under Credit Agreement	`RepaymentsOfLinesOfCredit`	$305.91M	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$4.89M	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$682.00K	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	$69.75M	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	$293.00M	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Dividends paid to common shareholders	`PaymentsOfDividendsCommonStock`	$34.48M	USD	Annual
Dividends paid to common shareholders	`PaymentsOfDividendsCommonStock`	$37.37M	USD	Annual
Dividends paid to common shareholders	`PaymentsOfDividendsCommonStock`	$42.04M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$17.12M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$18.32M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$7.32M	USD	Annual
Cash paid for shares withheld to satisfy employee taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$9.25M	USD	Annual
Cash paid for shares withheld to satisfy employee taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$8.05M	USD	Annual
Cash paid for shares withheld to satisfy employee taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$4.60M	USD	Annual
Cash divested in connection with spin-off of Power Generation business	`CashDivestedFromDeconsolidation`	-	USD	Annual
Cash divested in connection with spin-off of Power Generation business	`CashDivestedFromDeconsolidation`	-	USD	Annual
Cash divested in connection with spin-off of Power Generation business	`CashDivestedFromDeconsolidation`	$307.56M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-511.00K	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-464.00K	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-550.00K	USD	Annual
NET CASH USED IN FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-414.42M	USD	Annual
NET CASH USED IN FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-61.18M	USD	Annual
NET CASH USED IN FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-88.90M	USD	Annual
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-7.09M	USD	Annual
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-352.00K	USD	Annual
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$7.44M	USD	Annual
TOTAL INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-158.24M	USD	Annual
TOTAL INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$77.76M	USD	Annual
TOTAL INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-29.09M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$154.73M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$203.40M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$125.64M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$312.97M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$154.73M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$203.40M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$125.64M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$312.97M	USD	Point-in-time
Interest	`InterestPaidNet`	$14.25M	USD	Annual
Interest	`InterestPaidNet`	$6.65M	USD	Annual
Interest	`InterestPaidNet`	$6.51M	USD	Annual
Income taxes (net of refunds)	`IncomeTaxesPaidNet`	$66.29M	USD	Annual
Income taxes (net of refunds)	`IncomeTaxesPaidNet`	$117.75M	USD	Annual
Income taxes (net of refunds)	`IncomeTaxesPaidNet`	$38.42M	USD	Annual
Accrued capital expenditures included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$8.72M	USD	Annual
Accrued capital expenditures included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$6.74M	USD	Annual
Accrued capital expenditures included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$8.45M	USD	Annual

Stockholders Equity 49 line items

Line Item	Tag	Value	Unit	Period
Dividends declared (usd per share)	`CommonStockDividendsPerShareDeclared`	$0.36	USD	Annual
Dividends declared (usd per share)	`CommonStockDividendsPerShareDeclared`	$0.32	USD	Annual
Dividends declared (usd per share)	`CommonStockDividendsPerShareDeclared`	$0.42	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$285.76M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.01B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$279.63M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$150.41M	USD	Point-in-time
Balance (shares)	`CommonStockSharesIssued`	125.38M	shares	Point-in-time
Balance (shares)	`CommonStockSharesIssued`	124.15M	shares	Point-in-time
Net income	`ProfitLoss`	$183.61M	USD	Annual
Net income	`ProfitLoss`	$131.45M	USD	Annual
Net income	`ProfitLoss`	$148.37M	USD	Annual
Dividends declared	`Dividends`	$34.60M	USD	Annual
Dividends declared	`Dividends`	$37.29M	USD	Annual
Dividends declared	`Dividends`	$42.31M	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-909.00K	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-12.48M	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$6.24M	USD	Annual
Derivative financial instruments	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-892.00K	USD	Annual
Derivative financial instruments	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$348.00K	USD	Annual
Derivative financial instruments	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$693.00K	USD	Annual
Defined benefit obligations	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$61.00K	USD	Annual
Defined benefit obligations	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-155.00K	USD	Annual
Defined benefit obligations	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-363.00K	USD	Annual
Available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-1.44M	USD	Annual
Available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-214.00K	USD	Annual
Available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$3.68M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$21.71M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$7.71M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$19.99M	USD	Annual
Contributions to thrift plan	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$4.53M	USD	Annual
Shares placed in treasury	`TreasuryStockValueAcquiredCostMethod`	$74.36M	USD	Annual
Shares placed in treasury	`TreasuryStockValueAcquiredCostMethod`	$12.73M	USD	Annual
Shares placed in treasury	`TreasuryStockValueAcquiredCostMethod`	$303.82M	USD	Annual
Stock-based compensation charges	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$15.93M	USD	Annual
Stock-based compensation charges	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$15.22M	USD	Annual
Stock-based compensation charges	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$26.35M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$550.00K	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$511.00K	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$464.00K	USD	Annual
Other	`StockholdersEquityNoteSpinoffTransaction`	$-781.96M	USD	Annual
Deconsolidation of Generation mPower LLC	`NoncontrollingInterestDecreaseFromDeconsolidation`	$13.57M	USD	Annual
Other	`StockholdersEquityOther`	$-3.39M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$285.76M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.01B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$279.63M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$150.41M	USD	Point-in-time
Balance (shares)	`CommonStockSharesIssued`	125.38M	shares	Point-in-time
Balance (shares)	`CommonStockSharesIssued`	124.15M	shares	Point-in-time

Comprehensive Income 54 line items

Line Item	Tag	Value	Unit	Period
Tax (provision) benefit of unrealized losses on derivative financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$-1.79M	USD	Annual
Tax (provision) benefit of unrealized losses on derivative financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$209.00K	USD	Annual
Tax (provision) benefit of unrealized losses on derivative financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$264.00K	USD	Annual
Net income	`ProfitLoss`	$183.61M	USD	Annual
Net income	`ProfitLoss`	$131.45M	USD	Annual
Net income	`ProfitLoss`	$148.37M	USD	Annual
Tax provision (benefit) on reclassification adjustment for losses on derivative financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-1.49M	USD	Annual
Tax provision (benefit) on reclassification adjustment for losses on derivative financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$21.00K	USD	Annual
Tax provision (benefit) on reclassification adjustment for losses on derivative financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$86.00K	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-909.00K	USD	Annual
Tax benefit on unrecognized losses	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$606.00K	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-12.48M	USD	Annual
Currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$6.24M	USD	Annual
Tax benefit on unrecognized losses	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$532.00K	USD	Annual
Tax benefit on unrecognized losses	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$381.00K	USD	Annual
Tax benefit of recognition of benefit plan costs	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-581.00K	USD	Annual
Tax benefit of recognition of benefit plan costs	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-618.00K	USD	Annual
Tax benefit of recognition of benefit plan costs	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-566.00K	USD	Annual
Tax provision of unrealized gains	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$4.00K	USD	Annual
Unrealized gains (losses) arising during the period, net of tax (provision) benefit of $(264), $(209) and $1,786, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-5.12M	USD	Annual
Tax provision of unrealized gains	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$62.00K	USD	Annual
Unrealized gains (losses) arising during the period, net of tax (provision) benefit of $(264), $(209) and $1,786, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$598.00K	USD	Annual
Unrealized gains (losses) arising during the period, net of tax (provision) benefit of $(264), $(209) and $1,786, respectively	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$757.00K	USD	Annual
Tax provision of unrealized gains	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$382.00K	USD	Annual
Reclassification adjustment for (gains) losses included in net income, net of tax provision (benefit) of $21, $86 and $(1,487), respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$250.00K	USD	Annual
Tax provision on reclassification adjustment for gain on investment	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$124.00K	USD	Annual
Tax provision on reclassification adjustment for gain on investment	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$223.00K	USD	Annual
Reclassification adjustment for (gains) losses included in net income, net of tax provision (benefit) of $21, $86 and $(1,487), respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$64.00K	USD	Annual
Reclassification adjustment for (gains) losses included in net income, net of tax provision (benefit) of $21, $86 and $(1,487), respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-4.23M	USD	Annual
Tax provision on reclassification adjustment for gain on investment	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$57.00K	USD	Annual
Unrecognized losses arising during the period, net of tax benefit of $532, $606 and $381, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-733.00K	USD	Annual
Unrecognized losses arising during the period, net of tax benefit of $532, $606 and $381, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-1.12M	USD	Annual
Unrecognized losses arising during the period, net of tax benefit of $532, $606 and $381, respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-987.00K	USD	Annual
Recognition of benefit plan costs, net of tax benefit of $(618), $(566) and $(581), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	$1.10M	USD	Annual
Recognition of benefit plan costs, net of tax benefit of $(618), $(566) and $(581), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	$1.14M	USD	Annual
Recognition of benefit plan costs, net of tax benefit of $(618), $(566) and $(581), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	$1.06M	USD	Annual
Unrealized (losses) gains arising during the period, net of tax provision of $(382), $(62) and $(4), respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-930.00K	USD	Annual
Unrealized (losses) gains arising during the period, net of tax provision of $(382), $(62) and $(4), respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$7.00K	USD	Annual
Unrealized (losses) gains arising during the period, net of tax provision of $(382), $(62) and $(4), respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$3.79M	USD	Annual
Reclassification adjustment for gains included in net income, net of tax provision of $223, $57 and $124, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$512.00K	USD	Annual
Reclassification adjustment for gains included in net income, net of tax provision of $223, $57 and $124, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$221.00K	USD	Annual
Reclassification adjustment for gains included in net income, net of tax provision of $223, $57 and $124, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$107.00K	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-13.23M	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$3.06M	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$5.64M	USD	Annual
Total Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$186.67M	USD	Annual
Total Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$118.22M	USD	Annual
Total Comprehensive Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$154.01M	USD	Annual
Comprehensive Income Attributable to Noncontrolling Interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$555.00K	USD	Annual
Comprehensive Income Attributable to Noncontrolling Interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$521.00K	USD	Annual
Comprehensive Income Attributable to Noncontrolling Interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$6.00K	USD	Annual
Comprehensive Income Attributable to BWX Technologies, Inc.	`ComprehensiveIncomeNetOfTax`	$186.12M	USD	Annual
Comprehensive Income Attributable to BWX Technologies, Inc.	`ComprehensiveIncomeNetOfTax`	$153.49M	USD	Annual
Comprehensive Income Attributable to BWX Technologies, Inc.	`ComprehensiveIncomeNetOfTax`	$118.21M	USD	Annual

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