Note 2 - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash and cash equivalents	$ 246	$ 343
Long-term restricted cash	11	17
Cash included in assets held for sale	2	1
Total cash, cash equivalents and restricted cash shown in the Statement of Cash Flows	267	369	$ 478
Other Current Assets [Member]
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash included in Other current assets	$ 8	$ 8

Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Balance Type:	debit
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