Note 9 - Commitments and Contingencies (Details) - Site Contingency - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Site Contingency [Line Items]
Site Contingency	$ 13	$ 28
Other Operating Sites [Member]
Site Contingency [Line Items]
Site Contingency	7	7
Sites Associated with Former Operations [Member]
Site Contingency [Line Items]
Site Contingency		10
Sites Associated With Non-imaging Health Business [Member]
Site Contingency [Line Items]
Site Contingency	$ 6	$ 11

Undiscounted amount of the accrual for environmental loss contingencies.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q1)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section Y
-Paragraph Question 1

Name:	us-gaap_AccrualForEnvironmentalLossContingenciesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant