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Note 15 - Components of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Deferred income taxes | $ 188 | $ 35
Other long-term liabilities | (16) | (16)
Net deferred tax assets | $ 172 | $ 19

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