Segment Information - Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Net revenue	$ 211.7	$ 249.2	$ 436.1	$ 512.5
Operating Income (Loss)	0	(7.5)	(14.7)	(13.1)
Interest income	0	(0.2)	0	(0.3)
Interest expense	0.6	0.9	1.3	1.8
Other, net	0.1	1.1	(0.1)	2.6
Loss from continuing operations before income taxes	(0.7)	(9.3)	(15.9)	(17.2)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	17.9	10.0	20.8	20.1
Corporate and Unallocated Amount
Segment Reporting Information [Line Items]
Operating Income (Loss)	(17.9)	(17.5)	(35.5)	(33.2)
Consumer Storage and Accessories
Segment Reporting Information [Line Items]
Net revenue	116.9	160.5	238.7	322.6
Consumer Storage and Accessories | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	20.8	16.0	26.7	32.6
Consumer Storage and Accessories | Consumer Storage Media
Segment Reporting Information [Line Items]
Net revenue	107.3	151.1	221.5	303.8
Consumer Storage and Accessories | Audio and Accessories
Segment Reporting Information [Line Items]
Net revenue	9.6	9.4	17.2	18.8
Tiered Storage and Security and Accessories
Segment Reporting Information [Line Items]
Net revenue	94.8	88.7	197.4	189.9
Tiered Storage and Security and Accessories | Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(2.9)	(6.0)	(5.9)	(12.5)
Tiered Storage and Security and Accessories | Commercial Storage Media
Segment Reporting Information [Line Items]
Net revenue	61.8	75.1	128.7	161.3
Tiered Storage and Security and Accessories | Storage and Security Solutions
Segment Reporting Information [Line Items]
Net revenue	$ 33.0	$ 13.6	$ 68.7	$ 28.6