$WTS
Watts Water Technologies Inc Stock $wts

$wts Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000104746913001806 Filed on February 27, 2013

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q2
Revenue	$357.5M	$367.5M	$373.2M
YoY Change	13.64%	13.43%	16.88%
Cost Of Revenue	$235.1M	$245.4M	$208.9M
YoY Change	17.08%	20.65%	3.57%
Gross Profit	$127.9M	$134.5M	$129.4M
YoY Change	12.39%	11.53%	10.03%
Gross Profit Margin	35.78%	36.6%	34.67%
Selling, General & Admin	$92.60M	$98.20M	$92.00M
YoY Change	23.47%	22.29%	10.71%
% of Gross Profit	72.4%	73.01%	71.1%
Research & Development	$5.300M	$5.700M	$5.000M
YoY Change	23.26%	26.67%	-3.85%
% of Gross Profit	4.14%	4.24%	3.86%
Depreciation & Amortization	$12.70M	$14.10M	$11.30M
YoY Change	20.95%	29.36%	-2.59%
% of Gross Profit	9.93%	10.48%	8.73%
Operating Expenses	$97.90M	$103.9M	$97.00M
YoY Change	23.46%	22.52%	9.85%
Operating Profit	$41.20M	$26.60M	$32.40M
YoY Change	19.42%	-25.7%	10.58%
Interest Expense	$6.500M	$6.700M	-$5.600M
YoY Change	-210.17%	-231.37%	12.0%
% of Operating Profit	15.78%	25.19%	-17.28%
Other Income/Expense, Net	-$6.000M	-$7.100M	-$100.0K
YoY Change	-1300.0%	-1283.33%	-150.0%
Pretax Income	$35.20M	$19.50M	$17.20M
YoY Change	34.87%	-32.29%	-18.87%
Income Tax	$11.60M	$6.600M	$6.100M
% Of Pretax Income	32.95%	33.85%	35.47%
Net Earnings	$23.70M	$14.60M	$11.10M
YoY Change	36.99%	-33.94%	37.04%
Net Earnings / Revenue	6.63%	3.97%	2.97%
Basic Earnings Per Share	$0.47	$0.63	$0.39
Diluted Earnings Per Share	$0.47	$0.63	$0.39
COMMON SHARES
Basic Shares Outstanding	37.40M shares	37.60M shares
Diluted Shares Outstanding	37.50M shares	37.80M shares

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$250.4M	$270.8M	$422.6M
YoY Change	-15.49%	4.68%	63.17%
Cash & Equivalents	$250.6M	$266.7M	$418.5M
Short-Term Investments	$4.100M	$4.100M	$4.100M
Other Short-Term Assets	$76.30M	$81.30M	$75.70M
YoY Change	-14.46%	-11.63%	-8.8%
Inventory	$280.6M	$316.9M	$283.7M
Prepaid Expenses
Receivables	$205.9M	$238.0M	$204.4M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$814.5M	$907.0M	$986.4M
YoY Change	-5.96%	10.56%	22.87%
LONG-TERM ASSETS
Property, Plant & Equipment	$220.4M	$252.2M	$203.2M
YoY Change	11.59%	30.34%	1.85%
Goodwill	$488.6M	$514.7M
YoY Change
Intangibles	$151.0M
YoY Change
Long-Term Investments
YoY Change
Other Assets	$10.10M	$11.40M	$11.30M
YoY Change	-35.67%	-32.14%	-0.88%
Total Long-Term Assets	$879.5M	$973.4M	$809.4M
YoY Change	12.76%	25.5%	5.32%
TOTAL ASSETS
Total Short-Term Assets	$814.5M	$907.0M	$986.4M
Total Long-Term Assets	$879.5M	$973.4M	$809.4M
Total Assets	$1.694B	$1.880B	$1.796B
YoY Change	2.91%	17.82%	14.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$126.1M	$141.1M	$122.3M
YoY Change	15.27%	24.1%	16.14%
Accrued Expenses	$174.0M	$166.9M	$156.1M
YoY Change	-0.85%	2.64%	5.83%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.000M	$1.500M	$800.0K
YoY Change	185.71%	114.29%	-98.43%
Total Short-Term Liabilities	$285.6M	$313.4M	$284.8M
YoY Change	-1.99%	10.82%	-8.1%
LONG-TERM LIABILITIES
Long-Term Debt	$397.4M	$474.4M	$470.1M
YoY Change	5.08%	25.47%	54.84%
Other Long-Term Liabilities	$38.50M	$51.50M	$48.90M
YoY Change	-26.1%	3.83%	-10.28%
Total Long-Term Liabilities	$435.9M	$525.9M	$519.0M
YoY Change	1.3%	22.96%	44.93%
TOTAL LIABILITIES
Total Short-Term Liabilities	$285.6M	$313.4M	$284.8M
Total Long-Term Liabilities	$435.9M	$525.9M	$519.0M
Total Liabilities	$721.5M	$901.9M	$845.3M
YoY Change	-5.77%	19.89%	19.36%
SHAREHOLDERS EQUITY
Retained Earnings	$515.1M
YoY Change
Common Stock	$420.1M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$919.8M	$978.5M	$950.5M
YoY Change
Total Liabilities & Shareholders Equity	$1.694B	$1.880B	$1.796B
YoY Change	1.39%	17.82%	14.29%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q2
OPERATING ACTIVITIES
Net Income	$23.70M	$14.60M	$11.10M
YoY Change	36.99%	-33.94%	37.04%
Depreciation, Depletion And Amortization	$12.70M	$14.10M	$11.30M
YoY Change	20.95%	29.36%	-2.59%
Cash From Operating Activities	$36.00M	$20.00M	$700.0K
YoY Change	-14.29%	-28.57%	-75.86%
INVESTING ACTIVITIES
Capital Expenditures	$4.400M	$5.400M	-$6.600M
YoY Change	-168.75%	-203.85%	-2.94%
Acquisitions
YoY Change
Other Investing Activities	$0.00	-$161.8M	-$500.0K
YoY Change	-100.0%	388.82%	-109.8%
Cash From Investing Activities	-$4.700M	-$167.2M	-$7.100M
YoY Change	-17.54%	336.55%	317.65%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-47.40M	-12.60M	90.50M
YoY Change	1181.08%	-164.95%	-1807.55%
NET CHANGE
Cash From Operating Activities	36.00M	20.00M	700.0K
Cash From Investing Activities	-4.700M	-167.2M	-7.100M
Cash From Financing Activities	-47.40M	-12.60M	90.50M
Net Change In Cash	-16.10M	-159.8M	84.10M
YoY Change	-149.39%	-1856.04%	-2151.22%
FREE CASH FLOW
Cash From Operating Activities	$36.00M	$20.00M	$700.0K
Capital Expenditures	$4.400M	$5.400M	-$6.600M
Free Cash Flow	$31.60M	$14.60M	$7.300M
YoY Change	-34.71%	-56.02%	-24.74%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	116800000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	109000000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	42500000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	45900000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	77100000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	2000000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	2600000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	368000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	285600000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	307500000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	131600000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	126100000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	397400000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	45200000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	52700000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	48800000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	38500000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	448700000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	420100000	USD
CY2012Q4	us-gaap	Trading Securities Current TradingSecuritiesCurrent	2100000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	498100000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	515100000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-10800000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-19000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	939500000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	919800000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1709000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1694000000	USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9700000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9100000	USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	879600000	USD
CY2010	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3400000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4700000	USD
CY2010	wts	Increase Decrease In Value Restricted Stock Award Net Of Forfeitures IncreaseDecreaseInValueRestrictedStockAwardNetOfForfeitures	-2300000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	16400000	USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	1445600000	USD
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	1428100000	USD
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	1274600000	USD
CY2012	us-gaap	Cost Of Goods Sold CostOfGoodsSold	928100000	USD
CY2011	us-gaap	Cost Of Goods Sold CostOfGoodsSold	915300000	USD
CY2010	us-gaap	Cost Of Goods Sold CostOfGoodsSold	809700000	USD
CY2012	us-gaap	Gross Profit GrossProfit	517500000	USD
CY2011	us-gaap	Gross Profit GrossProfit	512800000	USD
CY2010	us-gaap	Gross Profit GrossProfit	464900000	USD
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	384800000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	377600000	USD
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	336700000	USD
CY2012	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	4300000	USD
CY2011	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	8800000	USD
CY2010	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	12600000	USD
CY2012	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	3400000	USD
CY2011	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	17400000	USD
CY2010	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	1400000	USD
CY2012	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	-1600000	USD
CY2011	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	7700000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	123400000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	116700000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	114200000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	700000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	1000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	1000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	24600000	USD
CY2011	us-gaap	Interest Expense InterestExpense	25800000	USD
CY2010	us-gaap	Interest Expense InterestExpense	22800000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	800000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-800000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2100000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-23100000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-25600000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-19700000	USD
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37300000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37300000	shares
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.96
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.72
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.69
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.06
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.05
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	100300000	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	WATTS WATER TECHNOLOGIES INC
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000795403
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	91100000	USD
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
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CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29700000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26700000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31400000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	70600000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	64400000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	63100000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-2200000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-4300000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	68400000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	66400000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	58800000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.96
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.73
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.69
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.06
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.05
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.12
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36000000	shares
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.12
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.78
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.57
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36100000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37500000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37400000	shares
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.44
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.44
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.44
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	14300000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-16400000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-26700000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentRealizedUponSaleOrLiquidationNetOfTax	-8600000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8300000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	901500000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	5400000	USD
CY2011	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	27200000	USD
CY2011	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-500000	USD
CY2011	wts	Increase Decrease In Value Restricted Stock Award Net Of Forfeitures IncreaseDecreaseInValueRestrictedStockAwardNetOfForfeitures	-900000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	16300000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	17800000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6600000	USD
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CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	16000000	USD
CY2012	us-gaap	Depreciation Depreciation	33800000	USD
CY2011	us-gaap	Depreciation Depreciation	33000000	USD
CY2010	us-gaap	Depreciation Depreciation	30500000	USD
CY2012	us-gaap	Adjustment For Amortization AdjustmentForAmortization	15600000	USD
CY2011	us-gaap	Adjustment For Amortization AdjustmentForAmortization	17900000	USD
CY2010	us-gaap	Adjustment For Amortization AdjustmentForAmortization	14300000	USD
CY2012	wts	Gain Loss On Disposal And Impairment Of Goodwill Property Plant Equipment And Other GainLossOnDisposalAndImpairmentOfGoodwillPropertyPlantEquipmentAndOther	-4100000	USD
CY2011	wts	Gain Loss On Disposal And Impairment Of Goodwill Property Plant Equipment And Other GainLossOnDisposalAndImpairmentOfGoodwillPropertyPlantEquipmentAndOther	-5200000	USD
CY2010	wts	Gain Loss On Disposal And Impairment Of Goodwill Property Plant Equipment And Other GainLossOnDisposalAndImpairmentOfGoodwillPropertyPlantEquipmentAndOther	-2600000	USD
CY2011	wts	Deferred Income Tax Noncash Expense Benefit DeferredIncomeTaxNoncashExpenseBenefit	-500000	USD
CY2010	wts	Deferred Income Tax Noncash Expense Benefit DeferredIncomeTaxNoncashExpenseBenefit	-6900000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1800000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3400000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	8200000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6200000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3400000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-800000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-900000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	7900000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-9000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4700000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	200000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	3500000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	131900000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	127400000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	113400000	USD
CY2010	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	16400000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-80700000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-23900000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	6900000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	3200000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	7300000	USD
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2700000	USD
CY2012	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	1400000	USD
CY2011	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-1100000	USD
CY2010	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	5500000	USD
CY2012	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	8100000	USD
CY2011	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-100000	USD
CY2010	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	5100000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	21200000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-78600000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	71000000	USD
CY2012	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	25200000	USD
CY2011	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	225500000	USD
CY2010	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	47600000	USD
CY2012	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	7700000	USD
CY2011	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	60000000	USD
CY2010	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	11300000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	1100000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	4300000	USD
CY2012	us-gaap	Stock Issued1 StockIssued1	500000	USD
CY2011	us-gaap	Stock Issued1 StockIssued1	400000	USD
CY2010	us-gaap	Stock Issued1 StockIssued1	2100000	USD
CY2012	us-gaap	Interest Paid InterestPaid	23900000	USD
CY2011	us-gaap	Interest Paid InterestPaid	24700000	USD
CY2010	us-gaap	Interest Paid InterestPaid	21400000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	27100000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	35500000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	20300000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	30600000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22600000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	24600000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3500000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	800000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2200000	USD
CY2012	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	2100000	USD
CY2011	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	8100000	USD
CY2010	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	4000000	USD
CY2012	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	4100000	USD
CY2011	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	8100000	USD
CY2010	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	6500000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	17500000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	165500000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	36300000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-42700000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-188200000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-57200000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	9200000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	184000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	75000000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	23900000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	168000000	USD
CY2012Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	17500000	USD
CY2011Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	165500000	USD
CY2010Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Cash Paid BusinessAcquisitionCostOfAcquiredEntityCashPaid	36300000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	329200000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	258200000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	50900000	USD
CY2012	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	2900000	USD
CY2011	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	2600000	USD
CY2010	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1200000	USD
CY2012	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	17800000	USD
CY2011	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5400000	USD
CY2010	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	3400000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	900000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	800000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	200000	USD
CY2010	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3200000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	65800000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	27200000	USD
CY2012	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	16000000	USD
CY2011	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	16300000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9800000	USD
CY2012	wts	Other Comprehensive Income Defined Benefit Plan Net Income Loss For The Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetIncomeLossForThePeriodNetOfTax	6500000	USD
CY2011	wts	Other Comprehensive Income Defined Benefit Plan Net Income Loss For The Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetIncomeLossForThePeriodNetOfTax	4200000	USD
CY2010	wts	Other Comprehensive Income Defined Benefit Plan Net Income Loss For The Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetIncomeLossForThePeriodNetOfTax	5300000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-200000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-200000	USD
CY2012	wts	Other Comprehensive Income Amortization Of Net Losses Included In Net Periodic Pension Cost OtherComprehensiveIncomeAmortizationOfNetLossesIncludedInNetPeriodicPensionCost	400000	USD
CY2011	wts	Other Comprehensive Income Amortization Of Net Losses Included In Net Periodic Pension Cost OtherComprehensiveIncomeAmortizationOfNetLossesIncludedInNetPeriodicPensionCost	1700000	USD
CY2010	wts	Other Comprehensive Income Amortization Of Net Losses Included In Net Periodic Pension Cost OtherComprehensiveIncomeAmortizationOfNetLossesIncludedInNetPeriodicPensionCost	1400000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Finalization Of Pension And Non Pension Postretirement Plan Valuation Net Of Tax OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax	8600000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	6100000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-6300000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	3700000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8200000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-18700000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-30400000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	76600000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47700000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	28400000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	271800000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	250600000	USD
CY2011Q4	us-gaap	Trading Securities Current TradingSecuritiesCurrent	4100000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	207100000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	205900000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	290700000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	280600000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	22700000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	26400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	21600000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	28300000	USD
CY2011Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	4600000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	14000000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	816000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	814500000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	223600000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	223100000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	508200000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	488600000	USD
CY2012Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	146600000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	151000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	4800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	6700000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	10100000	USD
CY2012Q4	us-gaap	Assets Assets	1709000000	USD
CY2011Q4	us-gaap	Assets Assets	1694000000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-1100000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	2300000	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-6000000	USD
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	1100000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-2200000	USD
CY2011	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	300000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1700000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-4300000	USD
CY2011Q4	us-gaap	Disposal Group Including Discontinued Operation Other Assets DisposalGroupIncludingDiscontinuedOperationOtherAssets	5600000	USD
CY2011Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	14000000	USD
CY2011Q4	us-gaap	Disposal Group Including Discontinued Operation Other Liabilities DisposalGroupIncludingDiscontinuedOperationOtherLiabilities	600000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	2600000	USD
CY2012	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="FONT-FAMILY: times"><font size="2"><i>Concentration of Credit</i></font></p> <p style="FONT-FAMILY: times"><font size="2">        The Company sells products to a diversified customer base and, therefore, has no significant concentrations of credit risk. In 2012 and 2011, no customer accounted for 10% or more of the Company's total sales.</font></p></div>
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	77000000	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	11700000	USD
CY2011	wts	Goodwill Translation Adjustments And Other Changes GoodwillTranslationAdjustmentsAndOtherChanges	-15200000	USD
CY2012	wts	Goodwill Translation Adjustments And Other Changes GoodwillTranslationAdjustmentsAndOtherChanges	8900000	USD
CY2011Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	23200000	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1200000	USD
CY2012	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="FONT-FAMILY: times"><font size="2"><i>Basis of Presentation</i></font></p> <p style="FONT-FAMILY: times"><font size="2">        Certain amounts in the 2011 and 2010 consolidated financial statements have been reclassified to permit comparison with the 2012 presentation. These reclassifications had no effect on reported results of operations or stockholders' equity.</font></p></div>
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="FONT-FAMILY: times"><font size="2"><i>Estimates</i></font></p> <p style="FONT-FAMILY: times"><font size="2">        The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></p></div>
CY2012Q4	us-gaap	Long Lived Assets Held For Sale Impairment Charge LongLivedAssetsHeldForSaleImpairmentCharge	1600000	USD
CY2010Q4	us-gaap	Long Lived Assets Held For Sale Impairment Charge LongLivedAssetsHeldForSaleImpairmentCharge	1000000	USD
CY2010Q4	us-gaap	Goodwill Gross GoodwillGross	450000000	USD
CY2010Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	22000000	USD
CY2011Q4	us-gaap	Goodwill Gross GoodwillGross	511800000	USD
CY2012Q4	us-gaap	Goodwill Gross GoodwillGross	532400000	USD
CY2012Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	24200000	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	1000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	201900000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	190200000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	97100000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	81600000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	104800000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	108600000	USD
CY2012Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	41800000	USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	42400000	USD
CY2012Q4	wts	Intangible Assets Excluding Goodwill Gross IntangibleAssetsExcludingGoodwillGross	243700000	USD
CY2011Q4	wts	Intangible Assets Excluding Goodwill Gross IntangibleAssetsExcludingGoodwillGross	232600000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15600000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	17900000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14300000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	14900000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	14800000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	14600000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	14000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	13700000	USD
CY2012	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P9Y2M12D
CY2012	wts	Unrecognized Tax Benefits Decreases Resulting From Voluntary Disclosure Agreements UnrecognizedTaxBenefitsDecreasesResultingFromVoluntaryDisclosureAgreements	1200000	USD
CY2012	wts	Unrecognized Tax Benefits Decreases Resulting From Audit Settlements UnrecognizedTaxBenefitsDecreasesResultingFromAuditSettlements	600000	USD
CY2012	wts	Unrecognized Tax Benefits Decreases Resulting From Reduced Exposure In Europe UnrecognizedTaxBenefitsDecreasesResultingFromReducedExposureInEurope	600000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	700000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4600000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	600000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1800000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	600000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	600000	USD
CY2012Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	15600000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y7M6D
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5800000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5300000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4700000	USD
CY2012	wts	Allocated Share Based Compensation Expense Impact On Basic And Diluted Earnings Per Share AllocatedShareBasedCompensationExpenseImpactOnBasicAndDilutedEarningsPerShare	0.10
CY2011	wts	Allocated Share Based Compensation Expense Impact On Basic And Diluted Earnings Per Share AllocatedShareBasedCompensationExpenseImpactOnBasicAndDilutedEarningsPerShare	0.09
CY2010	wts	Allocated Share Based Compensation Expense Impact On Basic And Diluted Earnings Per Share AllocatedShareBasedCompensationExpenseImpactOnBasicAndDilutedEarningsPerShare	0.08
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	100000	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	200000	shares
CY2010	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	100000	shares
CY2010	wts	Dilutive Securities Per Share Effect On Basic Earnings Per Share DilutiveSecuritiesPerShareEffectOnBasicEarningsPerShare	-0.1
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	68400000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	66400000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	58800000	USD
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	700000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	500000	shares
CY2012Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	2000000	shares
CY2012Q2	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	2000000	shares
CY2012Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	65800000	USD
CY2012	us-gaap	Shipping Handling And Transportation Costs ShippingHandlingAndTransportationCosts	38000000	USD
CY2011	us-gaap	Shipping Handling And Transportation Costs ShippingHandlingAndTransportationCosts	38100000	USD
CY2010	us-gaap	Shipping Handling And Transportation Costs ShippingHandlingAndTransportationCosts	33500000	USD
CY2012	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20700000	USD
CY2011	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	20900000	USD
CY2010	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	18600000	USD
CY2012	wts	Restructuring Settlement And Impairment Provisions Total Gross RestructuringSettlementAndImpairmentProvisionsTotalGross	5300000	USD
CY2011	wts	Restructuring Settlement And Impairment Provisions Total Gross RestructuringSettlementAndImpairmentProvisionsTotalGross	10000000	USD
CY2010	wts	Restructuring Settlement And Impairment Provisions Total Gross RestructuringSettlementAndImpairmentProvisionsTotalGross	14100000	USD
CY2010	wts	Restructuring Settlement Included In Cost Of Goods Sold RestructuringSettlementIncludedInCostOfGoodsSold	-1500000	USD
CY2012	wts	Discontinued Operation Gain Loss From Final Settlement Of Receivable DiscontinuedOperationGainLossFromFinalSettlementOfReceivable	1000000	USD
CY2011	wts	Discontinued Operation Gain Loss From Final Settlement Of Receivable DiscontinuedOperationGainLossFromFinalSettlementOfReceivable	1200000	USD
CY2012	wts	Restructuring Settlement And Impairment Provisions Net Total RestructuringSettlementAndImpairmentProvisionsNetTotal	5300000	USD
CY2011	wts	Restructuring Settlement And Impairment Provisions Net Total RestructuringSettlementAndImpairmentProvisionsNetTotal	10000000	USD
CY2010	wts	Restructuring Settlement And Impairment Provisions Net Total RestructuringSettlementAndImpairmentProvisionsNetTotal	14100000	USD
CY2012Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	111700000	USD
CY2012Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	20500000	USD
CY2012Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	158500000	USD
CY2011Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	104600000	USD
CY2011Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	28600000	USD
CY2011Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	147400000	USD
CY2012Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	28100000	USD
CY2011Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	26300000	USD
CY2012Q4	us-gaap	Other Inventory Materials Supplies And Merchandise Under Consignment OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment	13500000	USD
CY2011Q4	us-gaap	Other Inventory Materials Supplies And Merchandise Under Consignment OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment	13300000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	12000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	15200000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	59700000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	9100000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	50600000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-17700000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	515000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	291400000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	491000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	267900000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	22700000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	31800000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	15700000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	70200000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	20600000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	33600000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	14100000	USD
CY2011Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	68300000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	16700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	8700000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	15800000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14800000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	61500000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10100000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	51400000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-18800000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	17900000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6500000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	8100000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	27300000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	73000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	39600000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	51500000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	43500000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	51000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5000000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	21400000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1300000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	27700000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	6900000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	18600000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1800000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	27300000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12000000	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	20500000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2900000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	35400000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4400000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3500000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1100000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	5500000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-7300000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1200000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-600000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1600000	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-5900000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	300000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	35100000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1500000	USD
CY2012	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-7600000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	700000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	31900000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1900000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-2600000	USD
CY2011	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	-4200000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-300000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-400000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-3300000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2100000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33000000	USD
CY2012Q4	wts	Deferred Tax Liability Not Recognized Undistributed Foreign Earnings DeferredTaxLiabilityNotRecognizedUndistributedForeignEarnings	329700000	USD
CY2011Q4	wts	Deferred Tax Liability Not Recognized Undistributed Foreign Earnings DeferredTaxLiabilityNotRecognizedUndistributedForeignEarnings	282200000	USD
CY2010Q4	wts	Deferred Tax Liability Not Recognized Undistributed Foreign Earnings DeferredTaxLiabilityNotRecognizedUndistributedForeignEarnings	313000000	USD
CY2012Q4	wts	Withholding Taxes Payable Upon Remittance Of All Previously Unremitted Earnings WithholdingTaxesPayableUponRemittanceOfAllPreviouslyUnremittedEarnings	9800000	USD
CY2012Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	40600000	USD
CY2012Q4	wts	Product Liability Accrual And Workers Compensation Liability Current ProductLiabilityAccrualAndWorkersCompensationLiabilityCurrent	31400000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	42700000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2100000	USD
CY2011Q4	us-gaap	Accrued Sales Commission Current AccruedSalesCommissionCurrent	39500000	USD
CY2011Q4	wts	Product Liability Accrual And Workers Compensation Liability Current ProductLiabilityAccrualAndWorkersCompensationLiabilityCurrent	30500000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	38800000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	200000	USD
CY2011Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	34900000	USD
CY2012	wts	Letters Of Credit Facility Term LettersOfCreditFacilityTerm	P1Y
CY2012	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	600000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	399400000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	384600000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2200000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	2200000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	228100000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	75000000	USD
CY2012Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	34800000	USD
CY2010	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	6900000	USD
CY2012	wts	Share Based Compensation Arrangement By Share Based Payment Award Plan Number ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanNumber	3	plan
CY2011	wts	Defined Benefit Plan Curtailment Charge To Recorded To Write Off Unrecognized Prior Service Costs DefinedBenefitPlanCurtailmentChargeToRecordedToWriteOffUnrecognizedPriorServiceCosts	1500000	USD
CY2011	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	12500000	USD
CY2011	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	-1500000	USD
CY2011	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	8300000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	138000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	121200000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	112600000	USD
CY2011	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	5300000	USD
CY2012	wts	Defined Benefit Plan Administration Cost DefinedBenefitPlanAdministrationCost	900000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-22200000	USD
CY2012	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	5700000	USD
CY2011	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	6000000	USD
CY2012	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	15600000	USD
CY2011	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	13600000	USD
CY2012	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	4200000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-12800000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	115800000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	108400000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	90300000	USD
CY2012	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	11800000	USD
CY2011	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	14100000	USD
CY2012	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	700000	USD
CY2011	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	7800000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	600000	USD
CY2011	wts	Defined Benefit Plan Administration Cost DefinedBenefitPlanAdministrationCost	600000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	200000	USD
CY2011	us-gaap	Defined Benefit Plan Benefits Paid DefinedBenefitPlanBenefitsPaid	3200000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	21600000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	12600000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-22200000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-12800000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-41200000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-31100000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	138000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	13600000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	138000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	13600000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	115800000	USD
CY2011Q4	wts	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateProjectedBenefitObligation	107600000	USD
CY2011Q4	wts	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateAccumulatedBenefitObligation	107600000	USD
CY2011Q4	wts	Defined Benefit Plan Pension Plans With Plan Assets In Excess Of Accumulated Benefit Obligations Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithPlanAssetsInExcessOfAccumulatedBenefitObligationsAggregateFairValueOfPlanAssets	108400000	USD
CY2010	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	4600000	USD
CY2010	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	5700000	USD
CY2012	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	6900000	USD
CY2011	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	7500000	USD
CY2010	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	6000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	300000	USD
CY2010	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	300000	USD
CY2012	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-600000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-2700000	USD
CY2010	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-2300000	USD
CY2012	us-gaap	Defined Benefit Plan Amortization Of Net Gains Losses DefinedBenefitPlanAmortizationOfNetGainsLosses	1000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.040	pure
CY2011Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0480	pure
CY2012	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0480	pure
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0470	pure
CY2010	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0600	pure
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	700000	USD
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CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775	pure
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CY2010	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0400	pure
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CY2012Q4	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	600000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	4900000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	5300000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	5600000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	6000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	34900000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000	USD
CY2009	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000	USD
CY2012	us-gaap	Defined Contribution Plan Maximum Annual Contribution Per Employee Percent DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent	0.02	pure
CY2012	wts	Defined Contribution Plan Employer Match Level One Maximum DefinedContributionPlanEmployerMatchLevelOneMaximum	1.00	pure
CY2012	wts	Defined Contribution Plan Employer Match Employee Contribution Level One DefinedContributionPlanEmployerMatchEmployeeContributionLevelOne	0.04	pure
CY2012Q4	us-gaap	Loss Contingency Range Of Possible Loss Maximum LossContingencyRangeOfPossibleLossMaximum	4200000	USD
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	384600000	USD
CY2011Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	399400000	USD
CY2012Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	420800000	USD
CY2011Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	440500000	USD
CY2012	wts	Percentage Of Projected Intercompany Purchase Transactions Hedged For Next Twelve Months By Forward Exchange Contracts PercentageOfProjectedIntercompanyPurchaseTransactionsHedgedForNextTwelveMonthsByForwardExchangeContracts	0.50	pure
CY2012	wts	Maximum Length Of Time Hedged In Foreign Currency Contract MaximumLengthOfTimeHedgedInForeignCurrencyContract	P12M
CY2012Q4	us-gaap	Notional Amount Of Foreign Currency Derivative Instruments Not Designated As Hedging Instruments NotionalAmountOfForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	4500000	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	100000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	600000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	500000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	1300000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1400000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	1400000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	1400000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	4000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	11000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	1200000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	9800000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	1200000	USD
CY2012Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	8600000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	7400000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	5200000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2500000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2300000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	27600000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	18000000	USD
CY2011Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	18600000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	3900000	USD
CY2011Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	4800000	USD
CY2012Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	14100000	USD
CY2011Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	13800000	USD
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	361200000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	367400000	USD
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	357800000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	359200000	USD
CY2012Q1	us-gaap	Gross Profit GrossProfit	128500000	USD
CY2012Q2	us-gaap	Gross Profit GrossProfit	130400000	USD
CY2012Q3	us-gaap	Gross Profit GrossProfit	128900000	USD
CY2012Q4	us-gaap	Gross Profit GrossProfit	129700000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15700000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18500000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18700000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15500000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.42
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.50
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.53
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.52
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.44
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.42
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.50
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.52
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.52
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.44
CY2012Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2012Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2012Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2012Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	329900000	USD
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	373200000	USD
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	367500000	USD
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	357500000	USD
CY2011Q1	us-gaap	Gross Profit GrossProfit	121000000	USD
CY2011Q2	us-gaap	Gross Profit GrossProfit	129400000	USD
CY2011Q3	us-gaap	Gross Profit GrossProfit	134500000	USD
CY2011Q4	us-gaap	Gross Profit GrossProfit	127900000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11100000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	14600000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	23700000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17000000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.30
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.34
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.63
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CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.29
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.34
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.62
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.47
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2011Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2011Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2011Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2011Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2010Q4	us-gaap	Assets Assets	1646100000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	197500000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	49400000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	50900000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	44800000	USD
CY2012	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	155200000	USD
CY2011	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	144600000	USD
CY2010	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	127000000	USD
CY2012	wts	Number Of Product Categories NumberOfProductCategories	4	item
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	18500000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	18400000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	11100000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	12700000	USD
CY2011	wts	Payments To Acquire Intangible And Other Assets PaymentsToAcquireIntangibleAndOtherAssets	900000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1500000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	9500000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2800000	USD
CY2011Q4	wts	Disposal Group Including Discontinued Operation Inventory And Accounts Receivable DisposalGroupIncludingDiscontinuedOperationInventoryAndAccountsReceivable	4800000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	6600000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	8300000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	4700000	USD
CY2012	us-gaap	Nature Of Operations NatureOfOperations	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="FONT-FAMILY: times"><font size="2"><b>(1) Description of Business</b></font></p> <p style="FONT-FAMILY: times"><font size="2">        Watts Water Technologies, Inc. (the Company) designs, manufactures and sells an extensive line of water safety and flow control products primarily for the water quality, water conservation, water safety and water flow control markets located predominantly in North America and Europe with a presence in Asia.</font></p></div>
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012Q3	dei	Entity Public Float EntityPublicFloat	924049140	USD
CY2010	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-500000	USD
CY2012	wts	Payments To Acquire Intangible And Other Assets PaymentsToAcquireIntangibleAndOtherAssets	100000	USD
CY2010	wts	Payments To Acquire Intangible And Other Assets PaymentsToAcquireIntangibleAndOtherAssets	1000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.000	pure
CY2012	wts	Common Stock Optional Conversion Ratio CommonStockOptionalConversionRatio	1	pure
CY2011Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.000	pure
CY2012Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	4500000	USD
CY2011Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment Net DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet	3600000	USD
CY2011Q4	us-gaap	Disposal Group Including Discontinued Operation Deferred Tax Assets DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets	-2000000	USD
CY2012	wts	Geographic Segments Number GeographicSegmentsNumber	3	item
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	15500000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	18200000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	23400000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	17200000	USD
CY2012	us-gaap	Defined Benefit Plan Target Plan Asset Allocations DefinedBenefitPlanTargetPlanAssetAllocations	0.90	pure
CY2011Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27200000	USD
CY2011Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1000000	shares
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	77100000	USD
CY2012Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	3600000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4000000	USD
CY2012	wts	Tax Benefits Recognization Basis For Uncertain Tax Position Likelihood Realization Greater Than Percentage TaxBenefitsRecognizationBasisForUncertainTaxPositionLikelihoodRealizationGreaterThanPercentage	0.50	pure
CY2011Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1000000	shares
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	400000	USD

Files In Submission

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$WTS
Watts Water Technologies Inc Stock $wts

2011 Q4 Form 10-K Financial Statement

#000104746913001806 Filed on February 27, 2013

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$WTS Watts Water Technologies Inc Stock $wts

2011 Q4 Form 10-K Financial Statement

#000104746913001806 Filed on February 27, 2013

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$WTS
Watts Water Technologies Inc Stock $wts