CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Income Statement [Abstract]
Service revenues	$ 390.8	$ 443.6	$ 450.0
Product sales	477.2	507.0	519.2
Total revenues	868.0	950.6	969.2
Cost of service revenues	304.6	335.2	350.8
Cost of product sales	345.2	375.4	361.2
Total costs	649.8	710.6	712.0
Gross profit	218.2	240.0	257.2
Selling, general and administrative expenses	173.4	193.0	193.1
Merger and acquisition related items	0.2	(3.8)	(2.7)
Research and development expenses	23.0	21.4	17.8
Impairment of goodwill and intangible assets	0	0	96.6
Unused office space and other restructuring	1.7	(2.4)	2.1
Operating income (loss) from continuing operations	19.9	31.8	(49.7)
Other income (expense):
Interest expense, net	(54.3)	(63.7)	(66.1)
Loss on extinguishment of debt	(39.1)	0	0
Other income, net	0.6	0	1.3
Total other expense, net	(92.8)	(63.7)	(64.8)
Loss from continuing operations before income taxes	(72.9)	(31.9)	(114.5)
Provision (benefit) for income taxes from continuing operations	5.1	0	(1.6)
Income (loss) from continuing operations	(78.0)	(31.9)	(112.9)
Loss from discontinued operations	0	(5.3)	(1.5)
Net loss	(78.0)	(37.2)	(114.4)
Basic and diluted loss per common share:
Net loss from continuing operations (in dollars per share)	$ (1.35)	$ (0.56)	$ (2.41)
Net loss from discontinued operations (in dollars per share)	$ 0.00	$ (0.09)	$ (0.03)
Net loss per common share (in dollars per share)	$ (1.35)	$ (0.65)	$ (2.44)
Weighted average common shares outstanding:
Basic and diluted (in shares)	57.6	56.8	46.9
Comprehensive Loss
Net loss from above	(78.0)	(37.2)	(114.4)
Other comprehensive loss:
Change in cumulative translation adjustment	(0.4)	0	(0.4)
Post retirement benefit reserve adjustment net of tax expense	(0.5)	0	(0.2)
Other comprehensive loss, net of tax	(0.9)	0	(0.6)
Comprehensive loss	$ (78.9)	$ (37.2)	$ (115.0)