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Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Net sales	$ 290.3us-gaap_SalesRevenueNet	$ 288.1us-gaap_SalesRevenueNet	$ 552.1us-gaap_SalesRevenueNet	$ 545.5us-gaap_SalesRevenueNet
Cost of sales	208.2us-gaap_CostOfRevenue	205.9us-gaap_CostOfRevenue	398.7us-gaap_CostOfRevenue	396.2us-gaap_CostOfRevenue
Gross profit	82.1us-gaap_GrossProfit	82.2us-gaap_GrossProfit	153.4us-gaap_GrossProfit	149.3us-gaap_GrossProfit
Operating expenses:
Selling, general and administrative	55.8us-gaap_SellingGeneralAndAdministrativeExpense	54.2us-gaap_SellingGeneralAndAdministrativeExpense	110.8us-gaap_SellingGeneralAndAdministrativeExpense	107.2us-gaap_SellingGeneralAndAdministrativeExpense
Restructuring	0.7us-gaap_RestructuringCharges	2.7us-gaap_RestructuringCharges	8.9us-gaap_RestructuringCharges	2.8us-gaap_RestructuringCharges
Total operating expenses	56.5us-gaap_OperatingExpenses	56.9us-gaap_OperatingExpenses	119.7us-gaap_OperatingExpenses	110.0us-gaap_OperatingExpenses
Operating income	25.6us-gaap_OperatingIncomeLoss	25.3us-gaap_OperatingIncomeLoss	33.7us-gaap_OperatingIncomeLoss	39.3us-gaap_OperatingIncomeLoss
Interest expense, net	6.1us-gaap_InterestIncomeExpenseNet	12.5us-gaap_InterestIncomeExpenseNet	15.5us-gaap_InterestIncomeExpenseNet	25.1us-gaap_InterestIncomeExpenseNet
Loss on early extinguishment of debt	0us-gaap_GainsLossesOnExtinguishmentOfDebt	0us-gaap_GainsLossesOnExtinguishmentOfDebt	31.3us-gaap_GainsLossesOnExtinguishmentOfDebt	0us-gaap_GainsLossesOnExtinguishmentOfDebt
Income (loss) before income taxes	19.5us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	12.8us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	(13.1)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	14.2us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income tax expense (benefit)	7.2us-gaap_IncomeTaxExpenseBenefit	3.1us-gaap_IncomeTaxExpenseBenefit	(5.2)us-gaap_IncomeTaxExpenseBenefit	3.4us-gaap_IncomeTaxExpenseBenefit
Net income (loss)	$ 12.3us-gaap_NetIncomeLoss	$ 9.7us-gaap_NetIncomeLoss	$ (7.9)us-gaap_NetIncomeLoss	$ 10.8us-gaap_NetIncomeLoss
Net loss per basic share:
Net income (loss) per basic share	$ 0.08us-gaap_EarningsPerShareBasic	$ 0.06us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic	$ 0.07us-gaap_EarningsPerShareBasic
Net loss per diluted share:
Net income (loss) per diluted share	$ 0.08us-gaap_EarningsPerShareDiluted	$ 0.06us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted	$ 0.07us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding:
Basic, in shares	160.7us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	159.2us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	160.4us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	158.9us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted, in shares	163.3us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	161.9us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	160.4us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	161.8us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Dividends declared per share, in dollars per share	$ 0.0175us-gaap_CommonStockDividendsPerShareDeclared	$ 0.0175us-gaap_CommonStockDividendsPerShareDeclared	$ 0.0350us-gaap_CommonStockDividendsPerShareDeclared	$ 0.0350us-gaap_CommonStockDividendsPerShareDeclared

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Aggregate dividends declared during the period for each share of common stock outstanding.

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