CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Mar. 30, 2014
Income Statement [Abstract]
Service revenues	$ 87.4us-gaap_SalesRevenueServicesNet	$ 100.6us-gaap_SalesRevenueServicesNet
Product sales	95.1us-gaap_SalesRevenueGoodsNet	99.5us-gaap_SalesRevenueGoodsNet
Total revenues	182.5us-gaap_SalesRevenueNet	200.1us-gaap_SalesRevenueNet
Cost of service revenues	66.0us-gaap_CostOfServices	74.1us-gaap_CostOfServices
Cost of product sales	69.6us-gaap_CostOfGoodsSold	73.4us-gaap_CostOfGoodsSold
Total costs	135.6us-gaap_CostOfRevenue	147.5us-gaap_CostOfRevenue
Gross profit	46.9us-gaap_GrossProfit	52.6us-gaap_GrossProfit
Selling, general and administrative expenses	42.6	43.4
Research and development expenses	4.8us-gaap_ResearchAndDevelopmentExpense	5.2us-gaap_ResearchAndDevelopmentExpense
Unused office space and other restructuring	1.0	0.7
Operating income (loss) from continuing operations	(1.5)us-gaap_OperatingIncomeLoss	3.3us-gaap_OperatingIncomeLoss
Other income (expense):
Interest expense, net	(12.2)	(16.1)
Other income (expense), net	(0.4)us-gaap_OtherNonoperatingIncomeExpense	0.2us-gaap_OtherNonoperatingIncomeExpense
Total other expense, net	(12.6)us-gaap_NonoperatingIncomeExpense	(15.9)us-gaap_NonoperatingIncomeExpense
Loss from continuing operations before income taxes	(14.1)	(12.6)
Provision for income taxes from continuing operations	2.4us-gaap_IncomeTaxExpenseBenefit	2.3us-gaap_IncomeTaxExpenseBenefit
Loss from continuing operations	(16.5)	(14.9)
Income (loss) from discontinued operations	0.2	(0.1)
Net loss	(16.3)us-gaap_NetIncomeLoss	(15.0)us-gaap_NetIncomeLoss
Basic and diluted loss per common share:
Net loss from continuing operations (in dollars per share)	$ (0.28)	$ (0.26)
Net loss from discontinued operations (in dollars per share)	$ 0.00	$ 0.00
Net loss per common share (in dollars per share)	$ (0.28)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.26)us-gaap_EarningsPerShareBasicAndDiluted
Basic and diluted weighted average shares outstanding	58.3	57.4
Comprehensive Loss
Net loss	(16.3)us-gaap_NetIncomeLoss	(15.0)us-gaap_NetIncomeLoss
Change in cumulative translation adjustment	(0.2)	(0.1)
Comprehensive loss	$ (16.5)us-gaap_ComprehensiveIncomeNetOfTax	$ (15.1)us-gaap_ComprehensiveIncomeNetOfTax

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation, when the per share amount is the same.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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