$MWA
Mueller Water Products Inc Stock $mwa

$mwa Overview Financials Valuation SEC Filings Company Website

2019 Form 10-K Financial Statement

#000135059319000064 Filed on November 20, 2019

Income Statement

Concept	2019	2018 Q3	2018 Q2
Revenue	$968.0M	$254.3M	$250.2M
YoY Change	5.68%	12.08%	7.75%
Cost Of Revenue	$647.1M	$168.8M	$175.7M
YoY Change	3.35%	15.93%	17.45%
Gross Profit	$320.9M	$85.50M	$74.50M
YoY Change	10.69%	5.56%	-9.81%
Gross Profit Margin	33.15%	33.62%	29.78%
Selling, General & Admin	$182.7M	$42.90M	$41.30M
YoY Change	9.6%	4.13%	7.55%
% of Gross Profit	56.93%	50.18%	55.44%
Research & Development	$14.30M
YoY Change	23.28%
% of Gross Profit	4.46%
Depreciation & Amortization	$53.00M	$11.40M	$10.80M
YoY Change	21.28%	5.56%	5.88%
% of Gross Profit	16.52%	13.33%	14.5%
Operating Expenses	$196.6M	$42.90M	$43.90M
YoY Change	16.88%	4.13%	10.86%
Operating Profit	$124.3M	$40.50M	$30.60M
YoY Change	2.14%	20.54%	-28.84%
Interest Expense	$23.30M	-$5.200M	-$2.900M
YoY Change	-7.91%	0.0%	-43.14%
% of Operating Profit	18.74%	-12.84%	-9.48%
Other Income/Expense, Net	-$400.0K	-$300.0K	-$9.300M
YoY Change	-60.0%	-78.57%
Pretax Income	$82.10M	$34.70M	$21.30M
YoY Change	-15.62%	23.49%	-43.2%
Income Tax	$18.30M	$9.600M	$6.000M
% Of Pretax Income	22.29%	27.67%	28.17%
Net Earnings	$63.80M	$25.00M	$15.30M
YoY Change	-39.58%	29.53%	-36.25%
Net Earnings / Revenue	6.59%	9.83%	6.12%
Basic Earnings Per Share	$0.40	$0.16	$0.10
Diluted Earnings Per Share	$0.40	$0.16	$0.10
COMMON SHARES
Basic Shares Outstanding	157.8M shares	158.2M shares	158.1M shares
Diluted Shares Outstanding	159.0M shares		159.2M shares

Balance Sheet

Concept	2019	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$176.7M	$347.1M	$331.5M
YoY Change	-49.09%	-4.04%	-6.14%
Cash & Equivalents	$176.7M	$347.1M	$331.5M
Short-Term Investments
Other Short-Term Assets	$21.30M	$17.50M	$20.20M
YoY Change	33.96%	-28.28%	1.0%
Inventory	$191.4M	$156.6M	$156.1M
Prepaid Expenses
Receivables	$172.8M	$164.3M	$145.8M
Other Receivables	$4.700M	$1.600M	$3.500M
Total Short-Term Assets	$566.9M	$685.5M	$653.6M
YoY Change	-17.3%	2.27%	-0.21%
LONG-TERM ASSETS
Property, Plant & Equipment	$217.1M	$150.9M	$129.0M
YoY Change	43.87%	23.39%	17.17%
Goodwill		$12.10M
YoY Change		-6.2%
Intangibles		$408.1M	$424.6M
YoY Change		-7.1%	-3.94%
Long-Term Investments
YoY Change
Other Assets	$23.90M	$35.30M	$26.10M
YoY Change	-32.29%	33.71%	-3.69%
Total Long-Term Assets	$770.4M	$606.4M	$579.7M
YoY Change	27.04%	3.13%	0.09%
TOTAL ASSETS
Total Short-Term Assets	$566.9M	$685.5M	$653.6M
Total Long-Term Assets	$770.4M	$606.4M	$579.7M
Total Assets	$1.337B	$1.292B	$1.233B
YoY Change	3.51%	2.67%	-0.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$84.60M	$90.00M	$63.80M
YoY Change	-6.0%	9.09%	8.69%
Accrued Expenses	$39.10M	$76.40M	$34.80M
YoY Change	-9.07%	42.8%	27.01%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$900.0K	$700.0K	$800.0K
YoY Change	28.57%	-87.5%	-85.45%
Total Short-Term Liabilities	$178.5M	$167.1M	$127.4M
YoY Change	6.82%	18.01%	14.67%
LONG-TERM LIABILITIES
Long-Term Debt	$445.4M	$444.3M	$444.5M
YoY Change	0.25%	-6.46%	-6.56%
Other Long-Term Liabilities	$33.20M	$36.50M	$46.40M
YoY Change	-9.04%	-1.62%	-46.11%
Total Long-Term Liabilities	$478.6M	$480.8M	$490.9M
YoY Change	-0.46%	-6.11%	-12.62%
TOTAL LIABILITIES
Total Short-Term Liabilities	$178.5M	$167.1M	$127.4M
Total Long-Term Liabilities	$478.6M	$480.8M	$490.9M
Total Liabilities	$747.2M	$727.1M	$695.2M
YoY Change	2.55%	-5.42%	-9.94%
SHAREHOLDERS EQUITY
Retained Earnings		-$850.0M	-$875.0M
YoY Change		-11.05%	-10.25%
Common Stock		$1.600M	$1.600M
YoY Change		0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$590.1M	$563.3M	$536.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.337B	$1.292B	$1.233B
YoY Change	3.51%	2.67%	-0.07%

Cashflow Statement

Concept	2019	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$63.80M	$25.00M	$15.30M
YoY Change	-39.58%	29.53%	-36.25%
Depreciation, Depletion And Amortization	$53.00M	$11.40M	$10.80M
YoY Change	21.28%	5.56%	5.88%
Cash From Operating Activities	$92.50M	$63.00M	$68.50M
YoY Change	-30.5%	89.76%	60.05%
INVESTING ACTIVITIES
Capital Expenditures	-$86.60M	-$28.80M	-$12.50M
YoY Change	55.48%	51.58%	66.67%
Acquisitions	$127.5M
YoY Change
Other Investing Activities	-$127.5M	$400.0K	$0.00
YoY Change	-1734.62%	300.0%	-100.0%
Cash From Investing Activities	-$211.8M	-$28.40M	-$12.50M
YoY Change	342.17%	50.26%	71.23%
FINANCING ACTIVITIES
Cash Dividend Paid	$32.00M
YoY Change	6.31%
Common Stock Issuance & Retirement, Net	$4.800M
YoY Change	-78.85%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$50.90M	-18.20M	-47.60M
YoY Change	-48.22%	167.65%	328.83%
NET CHANGE
Cash From Operating Activities	$92.50M	63.00M	68.50M
Cash From Investing Activities	-$211.8M	-28.40M	-12.50M
Cash From Financing Activities	-$50.90M	-18.20M	-47.60M
Net Change In Cash	-$170.4M	16.40M	8.400M
YoY Change	1067.12%	118.67%	-65.57%
FREE CASH FLOW
Cash From Operating Activities	$92.50M	$63.00M	$68.50M
Capital Expenditures	-$86.60M	-$28.80M	-$12.50M
Free Cash Flow	$179.1M	$91.80M	$81.00M
YoY Change	-5.14%	75.86%	61.03%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001350593
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2018Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157332121	shares
CY2019Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157462140	shares
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	us-gaap	Revenues Revenues	968000000.0	USD
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-32892
CY2019	dei	Entity Registrant Name EntityRegistrantName	MUELLER WATER PRODUCTS, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	20-3547095
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1200 Abernathy Road N.E.
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 1200
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30328
CY2019	dei	City Area Code CityAreaCode	(770)
CY2019	dei	Local Phone Number LocalPhoneNumber	206-4200
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01
CY2019	dei	Trading Symbol TradingSymbol	MWA
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
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CY2019Q1	dei	Entity Public Float EntityPublicFloat	1572300000	USD
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CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	172800000	USD
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CY2019Q3	us-gaap	Inventory Net InventoryNet	191400000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	156600000	USD
CY2019Q3	us-gaap	Other Assets Current OtherAssetsCurrent	26000000.0	USD
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CY2019Q3	us-gaap	Goodwill Goodwill	95700000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	12100000	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	23900000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	35300000	USD
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CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	445400000	USD
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CY2019Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	87900000	USD
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CY2018Q3	us-gaap	Common Stock Value CommonStockValue	1600000	USD
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CY2017	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	0	USD
CY2019	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	82100000	USD
CY2018	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	95700000	USD
CY2017	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	78500000	USD
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CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-17400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	3800000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-6900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-6700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6300000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-3000000.0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-2400000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-900000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-1900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3200000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19000000.0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	16500000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	60600000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	124600000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	139800000	USD
CY2016Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	419500000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	123200000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	24000000.0	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6200000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5800000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	55000000.0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	16500000	USD
CY2017Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	489500000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	106000000.0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	30100000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5200000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7300000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	30000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19000000.0	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	564800000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	63800000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	64500000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	32000000.0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4300000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5200000	USD
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	10000000.0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3200000	USD
CY2019Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	592300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	63800000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	105600000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	123300000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	69000000.0	USD
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	63800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	105600000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	54300000	USD
CY2019	us-gaap	Depreciation Depreciation	26000000.0	USD
CY2018	us-gaap	Depreciation Depreciation	20900000	USD
CY2017	us-gaap	Depreciation Depreciation	19800000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	27000000.0	USD
CY2018	us-gaap	Adjustment For Amortization AdjustmentForAmortization	22800000	USD
CY2017	us-gaap	Adjustment For Amortization AdjustmentForAmortization	22100000	USD
CY2019	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	2000000.0	USD
CY2018	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	2800000	USD
CY2017	us-gaap	Pension Expense Reversal Of Expense Noncash PensionExpenseReversalOfExpenseNoncash	3400000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1300000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-43300000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5700000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4300000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	5200000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	6000000.0	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6500000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	2500000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	9000000.0	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2019	us-gaap	Other Noncash Expense OtherNoncashExpense	2400000	USD
CY2018	us-gaap	Other Noncash Expense OtherNoncashExpense	3400000	USD
CY2017	us-gaap	Other Noncash Expense OtherNoncashExpense	1100000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1400000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18900000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9900000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	17400000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	18400000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1900000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	7400000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2000000.0	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3400000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-11000000.0	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7700000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	8400000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	22000000.0	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	0	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	0	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-6100000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	32700000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-6300000	USD
CY2019	us-gaap	Pension Contributions PensionContributions	700000	USD
CY2018	us-gaap	Pension Contributions PensionContributions	0	USD
CY2017	us-gaap	Pension Contributions PensionContributions	35000000.0	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-9800000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	17100000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	6500000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	92500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	133100000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	59400000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	86600000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	55700000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	40600000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	127500000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	26600000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	2300000	USD
CY2018	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	7800000	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	900000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-211800000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-47900000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-66300000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	486300000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	4900000	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	13200000	USD
CY2018	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2017	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	450000000.0	USD
CY2017	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	32000000.0	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	30100000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	24000000.0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10000000.0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	30000000.0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	55000000.0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	5200000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7300000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	5800000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6900000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	1000000.0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1300000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2100000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2700000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	400000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-200000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	400000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-50900000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-98300000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-81400000	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-43300000	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	297200000	USD
CY2019	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2018	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	-100000	USD
CY2019	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	USD
CY2018	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	USD
CY2017	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	253800000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-200000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1500000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1200000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-170400000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-14600000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	166700000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	361700000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	347100000	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	195000000.0	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	176700000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	347100000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	361700000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	business_segments
CY2014Q3	us-gaap	Variable Interest Entity Ownership Percentage VariableInterestEntityOwnershipPercentage	0.49
CY2018	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	1700000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4000000.0	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4100000	USD
CY2016Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4500000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	300000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	500000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	300000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	200000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	700000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	800000	USD
CY2019	mwa	Reclassifications Under Asc606 ReclassificationsUnderASC606	-600000	USD
CY2018	mwa	Reclassifications Under Asc606 ReclassificationsUnderASC606	0	USD
CY2017	mwa	Reclassifications Under Asc606 ReclassificationsUnderASC606	0	USD
CY2019	mwa	Allowance For Doubtful Receivables Reclassifications AllowanceForDoubtfulReceivablesReclassifications	0	USD
CY2018	mwa	Allowance For Doubtful Receivables Reclassifications AllowanceForDoubtfulReceivablesReclassifications	100000	USD
CY2017	mwa	Allowance For Doubtful Receivables Reclassifications AllowanceForDoubtfulReceivablesReclassifications	100000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3500000	USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4000000.0	USD
CY2017Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	4100000	USD
CY2018Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	5100000	USD
CY2017Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	4400000	USD
CY2016Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	4600000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	3400000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	2200000	USD
CY2017	us-gaap	Inventory Write Down InventoryWriteDown	2000000.0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1200000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1200000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	2100000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	200000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-300000	USD
CY2017	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-100000	USD
CY2019Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	7500000	USD
CY2018Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	5100000	USD
CY2017Q3	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	4400000	USD
CY2019Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4500000	USD
CY2018Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4100000	USD
CY2019Q3	mwa	Exposure To Workers Compensation Claims Per Incident ExposureToWorkersCompensationClaimsPerIncident	1000000	USD
CY2014Q3	mwa	Discontinued Operations Receivable From Buyer Of Discontinued Operation DiscontinuedOperationsReceivableFromBuyerOfDiscontinuedOperation	11800000	USD
CY2019Q3	mwa	Workers Compensation Undiscounted Basis Liability WorkersCompensationUndiscountedBasisLiability	8700000	USD
CY2018Q3	mwa	Workers Compensation Undiscounted Basis Liability WorkersCompensationUndiscountedBasisLiability	9100000	USD
CY2019Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	7600000	USD
CY2018Q3	us-gaap	Workers Compensation Liability Current And Noncurrent WorkersCompensationLiabilityCurrentAndNoncurrent	7700000	USD
CY2018Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	20000000.0	USD
CY2017Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	8500000	USD
CY2016Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	2000000.0	USD
CY2019	us-gaap	Product Warranty Expense ProductWarrantyExpense	3900000	USD
CY2018	us-gaap	Product Warranty Expense ProductWarrantyExpense	18700000	USD
CY2017	us-gaap	Product Warranty Expense ProductWarrantyExpense	12300000	USD
CY2019	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	6800000	USD
CY2018	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	7200000	USD
CY2017	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	5800000	USD
CY2019Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	17100000	USD
CY2018Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	20000000.0	USD
CY2017Q3	mwa	Warranty Liability Unclassified WarrantyLiabilityUnclassified	8500000	USD
CY2019Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	6300000	USD
CY2018	us-gaap	Gain Loss On Discontinuation Of Interest Rate Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfInterestRateCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	2400000	USD
CY2019	mwa	Income Tax Benefit Likelihood Of Realization Threshold IncomeTaxBenefitLikelihoodOfRealizationThreshold	0.50
CY2019Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	171000000.0	USD
CY2018Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	165300000	USD
CY2019Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	4500000	USD
CY2018Q3	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	2400000	USD
CY2019Q3	us-gaap	Accounts Receivable Gross AccountsReceivableGross	175500000	USD
CY2018Q3	us-gaap	Accounts Receivable Gross AccountsReceivableGross	167700000	USD
CY2019Q3	us-gaap	Deferred Revenue DeferredRevenue	4700000	USD
CY2018Q3	us-gaap	Deferred Revenue DeferredRevenue	3300000	USD
CY2017Q1	us-gaap	Disposal Group Including Discontinued Operation Consideration DisposalGroupIncludingDiscontinuedOperationConsideration	305700000	USD
CY2017Q1	us-gaap	Disposal Group Including Discontinued Operation Consideration DisposalGroupIncludingDiscontinuedOperationConsideration	305700000	USD
CY2017Q1	mwa	Discontinued Operations Receivable From Buyer Of Discontinued Operation DiscontinuedOperationsReceivableFromBuyerOfDiscontinuedOperation	1900000	USD
CY2017Q1	mwa	Discontinuedoperations Totalconsideration DiscontinuedoperationsTotalconsideration	307600000	USD
CY2017Q1	mwa	Discontinued Operations Transaction Expenses DiscontinuedOperationsTransactionExpenses	8300000	USD
CY2017Q1	mwa	Discontinuedoperations Netproceeds DiscontinuedoperationsNetproceeds	299300000	USD
CY2017Q1	mwa	Discontinued Operations Fairvalueofnetassetsdisposed DiscontinuedOperationsFairvalueofnetassetsdisposed	-189800000	USD
CY2017Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-109500000	USD
CY2017Q1	us-gaap	Discontinued Operation Tax Effect Of Income Loss From Disposal Of Discontinued Operation DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation	-41600000	USD
CY2017	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	67900000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	83100000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	62800000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	20300000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	17200000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Other Expense DisposalGroupIncludingDiscontinuedOperationOtherExpense	200000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Operating Expense DisposalGroupIncludingDiscontinuedOperationOperatingExpense	17400000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	2900000	USD
CY2017	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	0	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	2900000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	1800000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	1100000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	69000000.0	USD
CY2017Q4	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	9000000.0	USD
CY2017	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	26600000	USD
CY2016	us-gaap	Business Acquisition Revenue Reported By Acquired Entity For Last Annual Period BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod	15000000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	3000000.0	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	5800000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	200000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	1000000.0	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	11400000	USD
CY2017Q1	us-gaap	Goodwill Goodwill	7200000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	700000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther	400000	USD
CY2017Q1	mwa	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDebt	100000	USD
CY2017Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities	800000	USD
CY2017	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	26600000	USD
CY2018Q4	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	140700000	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	13200000	USD
CY2019	mwa	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Net Working Capital BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentNetWorkingCapital	2000000.0	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Consideration Transferred BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred	1700000	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Financial Liabilities BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialLiabilities	9900000	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Intangibles BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles	37800000	USD
CY2019	us-gaap	Business Combination Provisional Information Initial Accounting Incomplete Adjustment Financial Assets BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinancialAssets	21400000	USD
CY2019	us-gaap	Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual	37200000	USD
CY2019	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P12Y
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	6900000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	17000000.0	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	200000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	8400000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets	1700000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Indefinite Lived Intangible Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets	4600000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	80100000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	5500000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther	2900000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities Noncurrent BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent	11200000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities	1700000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	140700000	USD
CY2019	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	13200000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-127500000	USD
CY2019Q3	mwa	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	758000000.0	USD
CY2018Q3	mwa	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	708000000.0	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	433700000	USD
CY2018Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	408100000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	12100000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	80100000	USD
CY2019	us-gaap	Indefinite Lived Intangible Assets Foreign Currency Translation Gain Loss IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	3500000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	95700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	78400000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	97300000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	82700000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	3700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1600000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-4200000	USD
CY2019	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	82100000	USD
CY2018	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	95700000	USD
CY2017	mwa	Net Income Before Income Taxand Discontinued Operations NetIncomeBeforeIncomeTaxandDiscontinuedOperations	78500000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	mwa	Weighted Average Deferred Income Tax Provision Rate WeightedAverageDeferredIncomeTaxProvisionRate	0.39
CY2017Q4	mwa	Weighted Average Deferred Income Tax Provision Rate WeightedAverageDeferredIncomeTaxProvisionRate	0.25
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-42500000	USD
CY2018Q1	mwa	Transition Tax Expense TransitionTaxExpense	7500000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	4500000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11600000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25700000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25400000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3900000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7100000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000000.0	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1500000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	600000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	500000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	17000000.0	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	33400000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29900000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2500000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-42600000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4300000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-400000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1000000.0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-200000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-800000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	300000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1200000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1300000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-43300000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5700000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18300000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-9900000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24200000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17200000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	23400000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	27500000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3200000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4800000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2700000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	2400000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	4500000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1800000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1700000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1400000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	1300000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	500000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	600000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1300000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	500000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	400000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	100000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	0	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	300000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	300000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	200000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	500000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	300000	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	600000	USD
CY2017	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	2100000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-42500000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-400000	USD
CY2019	mwa	Effective Income Tax Rate Reconciliation Federal Transition Tax Amount EffectiveIncomeTaxRateReconciliationFederalTransitionTaxAmount	-600000	USD
CY2018	mwa	Effective Income Tax Rate Reconciliation Federal Transition Tax Amount EffectiveIncomeTaxRateReconciliationFederalTransitionTaxAmount	7500000	USD
CY2017	mwa	Effective Income Tax Rate Reconciliation Federal Transition Tax Amount EffectiveIncomeTaxRateReconciliationFederalTransitionTaxAmount	0	USD
CY2019	mwa	Effective Income Tax Rate Reconciliation Uncertain Tax Positions EffectiveIncomeTaxRateReconciliationUncertainTaxPositions	1400000	USD
CY2018	mwa	Effective Income Tax Rate Reconciliation Uncertain Tax Positions EffectiveIncomeTaxRateReconciliationUncertainTaxPositions	0	USD
CY2017	mwa	Effective Income Tax Rate Reconciliation Uncertain Tax Positions EffectiveIncomeTaxRateReconciliationUncertainTaxPositions	0	USD
CY2019	mwa	Effective Income Tax Rate Reconciliation Foreign Investment Basis Difference EffectiveIncomeTaxRateReconciliationForeignInvestmentBasisDifference	1100000	USD
CY2018	mwa	Effective Income Tax Rate Reconciliation Foreign Investment Basis Difference EffectiveIncomeTaxRateReconciliationForeignInvestmentBasisDifference	0	USD
CY2017	mwa	Effective Income Tax Rate Reconciliation Foreign Investment Basis Difference EffectiveIncomeTaxRateReconciliationForeignInvestmentBasisDifference	0	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	100000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	400000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	600000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18300000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-9900000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24200000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	11700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	10400000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	10000000.0	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	13300000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	1700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2700000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	3300000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	2800000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	3200000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	2800000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	2100000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2400000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1000000.0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	34100000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	33300000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2800000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1900000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	31300000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	31400000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	95600000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	95700000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	0	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	2300000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	4700000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Other Finite Lived Assets DeferredTaxLiabilitiesOtherFiniteLivedAssets	0	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	18900000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	11400000	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	119200000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	109400000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	87900000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	78000000.0	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	88000000.0	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	79200000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	100000	USD
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CY2018Q3	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1200000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	87900000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	78000000.0	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3300000	USD
CY2017Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3000000.0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2000000.0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	400000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2400000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	100000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3300000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3300000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	300000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	800000	USD
CY2019Q3	us-gaap	Long Term Debt LongTermDebt	452100000	USD
CY2018Q3	us-gaap	Long Term Debt LongTermDebt	451600000	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	900000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	700000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	445400000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	444300000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	900000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	700000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	400000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	100000	USD
CY2019Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-3200000	USD
CY2019	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2021-07-13
CY2018Q3	us-gaap	Derivative Cap Interest Rate DerivativeCapInterestRate	0.00750
CY2017Q3	us-gaap	Derivative Fixed Interest Rate DerivativeFixedInterestRate	0.02341
CY2017Q3	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	150000000.0	USD
CY2018	us-gaap	Derivative Maturity Dates DerivativeMaturityDates	2021-09-30
CY2018	us-gaap	Gain Loss On Discontinuation Of Interest Rate Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfInterestRateCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	2400000	USD
CY2019Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	300000	USD
CY2018Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	900000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	700000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1600000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1800000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000.0	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	13900000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14300000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14300000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	16200000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	16500000	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	16900000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1900000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0326
CY2018Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0437
CY2017Q3	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0388
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0437
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0388
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0368
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0493
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0468
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0516
CY2019	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	600000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2019	us-gaap	Defined Benefit Plan Settlements Benefit Obligation DefinedBenefitPlanSettlementsBenefitObligation	-6500000	USD
CY2018	us-gaap	Defined Benefit Plan Settlements Benefit Obligation DefinedBenefitPlanSettlementsBenefitObligation	0	USD
CY2019	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	-200000	USD
CY2018	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	-200000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2019Q3	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2018Q3	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2017Q3	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2019Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	351600000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	24800000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	343500000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-4000000.0	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-700000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	0	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	0	USD
CY2019	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	100000	USD
CY2018	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	0	USD
CY2017	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	0	USD
CY2019	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	400000	USD
CY2018	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	1000000.0	USD
CY2017	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	1400000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2000000.0	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2800000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3400000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	356600000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	6300000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	356600000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	6300000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	351600000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	5000000.0	USD
CY2019Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateProjectedBenefitObligation	0	USD
CY2018Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateProjectedBenefitObligation	327100000	USD
CY2019Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateAccumulatedBenefitObligation	0	USD
CY2018Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateAccumulatedBenefitObligation	327100000	USD
CY2019Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateFairValueOfPlanAssets	0	USD
CY2018Q3	mwa	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateFairValueOfPlanAssets	338500000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	24800000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	24500000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	24200000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	23700000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	111100000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5500000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4700000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4100000	USD
CY2016Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	161693051	shares
CY2017	us-gaap	Restricted Stock Shares Issued Net Of Shares For Tax Withholdings RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings	262488	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	905834	shares
CY2017	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	150174	shares
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	4581227	shares
CY2017Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	158590383	shares
CY2018	us-gaap	Restricted Stock Shares Issued Net Of Shares For Tax Withholdings RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings	232875	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	851628	shares
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	150669	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	86516	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2573475	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	6475	shares
CY2018Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157332121	shares
CY2019	us-gaap	Restricted Stock Shares Issued Net Of Shares For Tax Withholdings RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings	200431	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	726636	shares
CY2019	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	167806	shares
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1074234	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	14.72
CY2019Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157462140	shares
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5500000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6400000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8600000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	4000000.0	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	4000000.0	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	4800000	USD
CY2019	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Basic ShareBasedCompensationIncreaseDecreaseInEarningsPerShareBasic	0.03
CY2018	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Basic ShareBasedCompensationIncreaseDecreaseInEarningsPerShareBasic	0.03
CY2017	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Basic ShareBasedCompensationIncreaseDecreaseInEarningsPerShareBasic	0.03
CY2019	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Diluted ShareBasedCompensationIncreaseDecreaseInEarningsPerShareDiluted	0.03
CY2018	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Diluted ShareBasedCompensationIncreaseDecreaseInEarningsPerShareDiluted	0.03
CY2017	mwa	Share Based Compensation Increase Decrease In Earnings Per Share Diluted ShareBasedCompensationIncreaseDecreaseInEarningsPerShareDiluted	0.03
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	106896	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	214435	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	238826	shares
CY2019Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	5700000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y5M19D
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	20500000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	7022737	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2019	mwa	Share Based Compensation Expected Forfeiture Rate ShareBasedCompensationExpectedForfeitureRate	0.02
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3554308	shares
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.99
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y4M24D
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	23800000	USD
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	905834	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	4.71
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7300000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	207820	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2440654	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.72
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y6M
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	17300000	USD
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	851628	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.00
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3800000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1589026	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.03
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y10M24D
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	10300000	USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	726636	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	5.20
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4400000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	862390	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.89
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5500000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	862390	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	4.89
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P2Y
CY2019Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	5500000	USD
CY2019Q3	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	862390	shares
CY2019Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	4.89
CY2019	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P2Y
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	862390	shares
CY2019Q3	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	4.89
CY2019Q3	us-gaap	Inventory Raw Materials And Purchased Parts Net Of Reserves InventoryRawMaterialsAndPurchasedPartsNetOfReserves	95200000	USD
CY2018Q3	us-gaap	Inventory Raw Materials And Purchased Parts Net Of Reserves InventoryRawMaterialsAndPurchasedPartsNetOfReserves	81600000	USD
CY2019Q3	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	43700000	USD
CY2018Q3	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	37800000	USD
CY2019Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	52500000	USD
CY2018Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	37200000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	191400000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	156600000	USD
CY2019Q3	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	4200000	USD
CY2018Q3	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	3500000	USD
CY2019Q3	us-gaap	Prepaid Taxes PrepaidTaxes	4700000	USD
CY2018Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1600000	USD
CY2019Q3	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	17100000	USD
CY2018Q3	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	12400000	USD
CY2019Q3	us-gaap	Other Assets Current OtherAssetsCurrent	26000000.0	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	17500000	USD
CY2019Q3	us-gaap	Land Land	5200000	USD
CY2018Q3	us-gaap	Land Land	5400000	USD
CY2019Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	68900000	USD
CY2018Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	55900000	USD
CY2019Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	362900000	USD
CY2018Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	311400000	USD
CY2019Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	48000000.0	USD
CY2018Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	22200000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	485000000.0	USD
CY2018Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	394900000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	267900000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	244000000.0	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	217100000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	150900000	USD
CY2019Q3	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	28500000	USD
CY2018Q3	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	31700000	USD
CY2019Q3	mwa	Accrued Rebate AccruedRebate	8700000	USD
CY2018Q3	mwa	Accrued Rebate AccruedRebate	9700000	USD
CY2019Q3	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3300000	USD
CY2018Q3	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3300000	USD
CY2019Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6500000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6000000.0	USD
CY2019Q3	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	1200000	USD
CY2018Q3	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	1200000	USD
CY2019Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	600000	USD
CY2018Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	7600000	USD
CY2019Q3	us-gaap	Interest Payable Current InterestPayableCurrent	7300000	USD
CY2018Q3	us-gaap	Interest Payable Current InterestPayableCurrent	8000000.0	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	1700000	USD
CY2018Q3	us-gaap	Restructuring Reserve RestructuringReserve	900000	USD
CY2019Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	22000000.0	USD
CY2018Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2019Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	13200000	USD
CY2018Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	8000000.0	USD
CY2019Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	93000000.0	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	76400000	USD
CY2019	us-gaap	Reorganization Items ReorganizationItems	4300000	USD
CY2019	us-gaap	Other Nonrecurring Expense OtherNonrecurringExpense	5100000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14300000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	11600000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	12100000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	7100000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	7100000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	5200000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1200000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1600000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1800000	USD
CY2019	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	0	USD
CY2018	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	600000	USD
CY2017	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	1900000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3000000.0	USD
CY2019	us-gaap	Interest Expense Other InterestExpenseOther	200000	USD
CY2018	us-gaap	Interest Expense Other InterestExpenseOther	600000	USD
CY2017	us-gaap	Interest Expense Other InterestExpenseOther	600000	USD
CY2019	us-gaap	Interest Expense InterestExpense	23300000	USD
CY2018	us-gaap	Interest Expense InterestExpense	25300000	USD
CY2017	us-gaap	Interest Expense InterestExpense	24200000	USD
CY2019	us-gaap	Interest Income Other InterestIncomeOther	3500000	USD
CY2018	us-gaap	Interest Income Other InterestIncomeOther	4400000	USD
CY2017	us-gaap	Interest Income Other InterestIncomeOther	2000000.0	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-19800000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-20900000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-22200000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-6300000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	26500000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-32800000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	6300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	11900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	2400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	2400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	6300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-9500000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3200000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	0	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	36000000.0	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-36000000.0	USD
CY2019	us-gaap	Interest Paid InterestPaid	23600000	USD
CY2018	us-gaap	Interest Paid InterestPaid	8900000	USD
CY2017	us-gaap	Interest Paid InterestPaid	19500000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29100000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	10700000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	31900000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	business_segments
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	217100000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	150900000	USD
CY2019	us-gaap	Revenues Revenues	968000000.0	USD
CY2018	us-gaap	Revenues Revenues	916000000.0	USD
CY2017	us-gaap	Revenues Revenues	826000000.0	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	124300000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	121700000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	102100000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53000000.0	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	43700000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	41900000	USD
CY2019	us-gaap	Other General Expense OtherGeneralExpense	16300000	USD
CY2018	us-gaap	Other General Expense OtherGeneralExpense	10500000	USD
CY2017	us-gaap	Other General Expense OtherGeneralExpense	10400000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	86600000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	55700000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	40600000	USD
CY2019Q3	us-gaap	Assets Assets	1337300000	USD
CY2018Q3	us-gaap	Assets Assets	1291900000	USD
CY2019Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	529400000	USD
CY2018Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	420200000	USD
CY2018	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	10000000.0	CAD
CY2019	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	22000000	USD
CY2019	us-gaap	Loss Contingency Accrual Carrying Value Period Increase Decrease LossContingencyAccrualCarryingValuePeriodIncreaseDecrease	17000000	USD
CY2019Q3	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	22000000	USD
CY2019	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5800000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	6400000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	5800000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	6100000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5100000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4200000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3800000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3700000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	15800000	USD
CY2019Q3	us-gaap	Other Payments To Acquire Businesses OtherPaymentsToAcquireBusinesses	5400000	USD
CY2019Q3	us-gaap	Revenues Revenues	266900000	USD
CY2019Q2	us-gaap	Revenues Revenues	274300000	USD
CY2019Q1	us-gaap	Revenues Revenues	234000000.0	USD
CY2018Q4	us-gaap	Revenues Revenues	192800000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	88800000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	97200000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	74800000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	60100000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	39000000.0	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	47200000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	22200000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	15900000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	40200000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	33700000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	10900000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-21000000.0	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.13
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.13
CY2018Q3	us-gaap	Revenues Revenues	254300000	USD
CY2018Q2	us-gaap	Revenues Revenues	250200000	USD
CY2018Q1	us-gaap	Revenues Revenues	233200000	USD
CY2017Q4	us-gaap	Revenues Revenues	178300000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	85500000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	74500000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	74500000	USD
CY2017Q4	us-gaap	Gross Profit GrossProfit	55400000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	40500000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	30600000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	29900000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	20700000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	25000000.0	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	15300000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	10200000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	55100000	USD
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.10
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34

Files In Submission

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$MWA
Mueller Water Products Inc Stock $mwa

2019 Form 10-K Financial Statement

#000135059319000064 Filed on November 20, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MWA Mueller Water Products Inc Stock $mwa

2019 Form 10-K Financial Statement

#000135059319000064 Filed on November 20, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MWA
Mueller Water Products Inc Stock $mwa