Note 20 - Amounts Recognized in the Consolidated Statement of Financial Position (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Pension and other postretirement liabilities	$ (379)	$ (462)
Other Postretirement Benefits Plan [Member]
Amounts Recognized In Consolidated Statement Of Financial Position [Line Items]
Other current liabilities	(3)	(4)
Pension and other postretirement liabilities	(61)	(67)
Other benefit plan liabilities	$ (64)	$ (71)

Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant