Litigation, Commitments and Contingencies (Details) CAD in Millions					1 Months Ended		3 Months Ended		9 Months Ended		186 Months Ended
	Oct. 10, 2017 USD ($)	Sep. 28, 2017 USD ($)	Sep. 15, 2017 USD ($)	Feb. 17, 2017 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2017 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2017 CAD	Jun. 30, 2017 USD ($)	Aug. 15, 2017 USD ($)	Mar. 29, 2017 employee	Dec. 31, 2016 USD ($)	Dec. 31, 2013 USD ($)
Loss Contingencies [Line Items]
Reversed accrual								$ 2,800,000
France Copyright Levy
Loss Contingencies [Line Items]
Copyright levy accrual							$ 14,400,000		$ 14,400,000						$ 9,500,000
Copyright levy overpaid						$ 55,100,000			55,100,000
Italy Copyright Levy | Cost of sales
Loss Contingencies [Line Items]
Litigation settlement					$ 1,000,000
ECJ Copyright Levy
Loss Contingencies [Line Items]
Copyright levy payment											$ 100,000,000
Copyright levy accrual							5,500,000		$ 5,500,000					$ 4,900,000
IOENGINE Note | Notes Payable, Other Payables
Loss Contingencies [Line Items]
Debt instrument, principal amount												$ 4,000,000
IOENGINE LLC
Loss Contingencies [Line Items]
Damages awarded to IOENGINE				$ 11,000,000
Payments for legal settlements		$ 3,750,000
Litigation settlement							3,300,000
CMC Magnetic Corp vs. Imation
Loss Contingencies [Line Items]
Litigation settlement							$ 7,300,000
CMC Magnetic Corp vs. Imation | Imation Corporation Japan
Loss Contingencies [Line Items]
Damages awarded to IOENGINE			$ 9,200,000
CMC Magnetic Corp vs. Imation | Subsequent Event | Imation Corporation Japan
Loss Contingencies [Line Items]
Financing Receivable, Net	$ 1,500,000
Payments for legal settlements	1,500,000
CMC Magnetic Corp vs. Imation | Subsequent Event | Imation Europe B.V.
Loss Contingencies [Line Items]
Damages awarded to IOENGINE	$ 825,000
Severance Action
Loss Contingencies [Line Items]
Number of employees filing lawsuit | employee													3
Canadian Private Copying Collective vs. Imation | Pending Litigation | Imation Enterprises Corp.
Loss Contingencies [Line Items]
Loss contingency, damages sought | CAD										CAD 1
Loss contingency, penalties and interests sought, value | CAD										CAD 5