Note 5 - Carrying Value of Goodwill by Reportable Segments (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
Goodwill [Line Items]
Goodwill	$ 76
Accumulated impairment losses	(64)
Balance	12
Balance	12
Traditional Printing [Member]
Goodwill [Line Items]
Goodwill	56
Accumulated impairment losses	(56)
Digital Printing [Member]
Goodwill [Line Items]
Goodwill	6
Balance	6
Balance	6
Advanced Materials and Chemicals [Member]
Goodwill [Line Items]
Goodwill	14
Accumulated impairment losses	(8)
Balance	6
Goodwill reallocation	(6)
Brand [Member]
Goodwill [Line Items]
Goodwill reallocation	6
Balance	$ 6