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Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue
Product revenue	$ 241us-gaap_SalesRevenueGoodsNet	$ 273us-gaap_SalesRevenueGoodsNet
Service revenue	341us-gaap_SalesRevenueServicesNet	355us-gaap_SalesRevenueServicesNet
Total revenue	582us-gaap_Revenues	628us-gaap_Revenues
Costs and operating expenses
Cost of products	109us-gaap_CostOfGoodsSold	92us-gaap_CostOfGoodsSold
Cost of services	196us-gaap_CostOfServices	203us-gaap_CostOfServices
Selling, general and administrative expenses	184us-gaap_SellingGeneralAndAdministrativeExpense	188us-gaap_SellingGeneralAndAdministrativeExpense
Research and development costs	63us-gaap_ResearchAndDevelopmentExpense	56us-gaap_ResearchAndDevelopmentExpense
Total costs and operating expenses	552us-gaap_CostsAndExpenses	539us-gaap_CostsAndExpenses
Income from operations	30us-gaap_OperatingIncomeLoss	89us-gaap_OperatingIncomeLoss
Other expense, net	0us-gaap_NonoperatingIncomeExpense	(7)us-gaap_NonoperatingIncomeExpense
Income before income taxes	30us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax expense	8us-gaap_IncomeTaxExpenseBenefit	23us-gaap_IncomeTaxExpenseBenefit
Net income	$ 22us-gaap_NetIncomeLoss	$ 59us-gaap_NetIncomeLoss
Net income per weighted average common share
Basic (in dollars per share)	$ 0.15us-gaap_EarningsPerShareBasic	$ 0.37us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ 0.15us-gaap_EarningsPerShareDiluted	$ 0.37us-gaap_EarningsPerShareDiluted
Weighted average common shares outstanding
Basic (in shares)	145.2us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	158.4us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares)	147.7us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	160.9us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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- Definition

Total costs related to goods produced and sold during the reporting period.

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