Acquisitions and Divestitures - Discontinued Operations Additional Information (Details) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 04, 2016 USD ($) trademark	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Feb. 29, 2016 USD ($) period Agreement
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reclassification of cumulative translation adjustment				$ 75.8	$ 0.0
Current liabilities of discontinued operations		$ 39.7		39.7	74.6
Current assets of discontinued operations		10.5		10.5	44.3
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reclassification of cumulative translation adjustment			$ 75.8	75.8	0.0
Current liabilities of discontinued operations		39.7		39.7	74.6
Depreciation and amortization expenses related to the discontinued businesses				0.3	5.3
Capital expenditures associated with the discontinued businesses				0.0	0.3
Income tax provision related to discontinued operations				(0.7)	12.6
Income tax (provision) benefit					(12.6)
Current assets of discontinued operations		10.5		10.5	44.3
Discontinued operations restricted cash		9.4		9.4	6.4
Accounts receivable of discontinued operations					15.6
Assets held for sale of discontinued operations					9.6
Inventory of discontinued operations					2.4
Other current assets of discontinued operations					10.3
Legal accruals of discontinued operations		11.0		11.0
Accounts payable of discontinued operations		22.8		22.8	39.3
Customer credit and rebate accruals of discontinued operation		3.2		3.2
Restructing accruals of discontinued operations					14.6
Rebate accruals of discontinued operations					5.4
Deferred revenue of discontinued operations					2.0
Other current liabilities of discontinued operations		2.7		$ 2.7	13.3
Discontinued Operations | Imation Mobile Security (IronKey Brand)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of asset purchase agreements | Agreement						2
Discontinued Operations | Imation Mobile Security Excluding Software and Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of business, total consideration						$ 4.3
Discontinued Operations | Imation Mobile Security Software and Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of business, total consideration						0.4
Current liabilities of discontinued operations						$ 2.0
Disposal group, potential earn-outs, number of annual periods subsequent to sale | period						3
Disposal group, potential earn-outs as percentage of contingency amount						10.00%
Disposal group, additional one-time earn-out payment		$ 0.2
Disposal group, gain on disposal			$ 3.8
Trademarks | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of trademarks sold (trademark) | trademark	2
Sale of trademarks	$ 9.4				$ 9.4